diff --git a/mmtk/Cargo.lock b/mmtk/Cargo.lock
index 83d3509..c7a4a2c 100644
--- a/mmtk/Cargo.lock
+++ b/mmtk/Cargo.lock
@@ -11,6 +11,54 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "anstream"
+version = "0.6.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d96bd03f33fe50a863e394ee9718a706f988b9079b20c3784fb726e7678b62fb"
+dependencies = [
+ "anstyle",
+ "anstyle-parse",
+ "anstyle-query",
+ "anstyle-wincon",
+ "colorchoice",
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle"
+version = "1.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8901269c6307e8d93993578286ac0edf7f195079ffff5ebdeea6a59ffb7e36bc"
+
+[[package]]
+name = "anstyle-parse"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c75ac65da39e5fe5ab759307499ddad880d724eed2f6ce5b5e8a26f4f387928c"
+dependencies = [
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle-query"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e28923312444cdd728e4738b3f9c9cac739500909bb3d3c94b43551b16517648"
+dependencies = [
+ "windows-sys",
+]
+
+[[package]]
+name = "anstyle-wincon"
+version = "3.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1cd54b81ec8d6180e24654d0b371ad22fc3dd083b6ff8ba325b72e00c87660a7"
+dependencies = [
+ "anstyle",
+ "windows-sys",
+]
+
 [[package]]
 name = "atomic"
 version = "0.6.0"
@@ -22,9 +70,9 @@ dependencies = [
 
 [[package]]
 name = "atomic-traits"
-version = "0.3.0"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b29ec3788e96fb4fdb275ccb9d62811f2fa903d76c5eb4dd6fe7d09a7ed5871f"
+checksum = "707f750b93bd1b739cf9ddf85f8fe7c97a4a62c60ccf8b6f232514bd9103bedc"
 dependencies = [
  "cfg-if",
  "rustc_version",
@@ -50,9 +98,9 @@ checksum = "cf4b9d6a944f767f8e5e0db018570623c85f3d925ac718db4e06d0187adb21c1"
 
 [[package]]
 name = "built"
-version = "0.7.1"
+version = "0.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "38d17f4d6e4dc36d1a02fbedc2753a096848e7c1b0772f7654eab8e2c927dd53"
+checksum = "41bfbdb21256b87a8b5e80fab81a8eed158178e812fd7ba451907518b2742f16"
 dependencies = [
  "git2",
 ]
@@ -74,14 +122,14 @@ checksum = "4da9a32f3fed317401fa3c862968128267c3106685286e15d5aaa3d7389c2f60"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.58",
+ "syn 2.0.60",
 ]
 
 [[package]]
 name = "cc"
-version = "1.0.92"
+version = "1.0.94"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2678b2e3449475e95b0aa6f9b506a28e61b3dc8996592b983695e8ebb58a8b41"
+checksum = "17f6e324229dc011159fcc089755d1e2e216a90d43a7dea6853ca740b84f35e7"
 dependencies = [
  "jobserver",
  "libc",
@@ -93,6 +141,12 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "colorchoice"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "acbf1af155f9b9ef647e42cdc158db4b64a1b61f743629225fde6f3e0be2a7c7"
+
 [[package]]
 name = "core-foundation-sys"
 version = "0.8.6"
@@ -157,13 +211,13 @@ checksum = "248e3bacc7dc6baa3b21e405ee045c3047101a49145e7e9eca583ab4c2ca5345"
 
 [[package]]
 name = "delegate"
-version = "0.10.0"
+version = "0.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0ee5df75c70b95bd3aacc8e2fd098797692fb1d54121019c4de481e42f04c8a1"
+checksum = "4e018fccbeeb50ff26562ece792ed06659b9c2dae79ece77c4456bb10d9bf79b"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 1.0.109",
+ "syn 2.0.60",
 ]
 
 [[package]]
@@ -174,9 +228,9 @@ checksum = "75b325c5dbd37f80359721ad39aca5a29fb04c89279657cffdda8736d0c0b9d2"
 
 [[package]]
 name = "either"
-version = "1.10.0"
+version = "1.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "11157ac094ffbdde99aa67b23417ebdd801842852b500e395a45a9c0aac03e4a"
+checksum = "a47c1c47d2f5964e29c61246e81db715514cd532db6b5116a25ea3c03d6780a2"
 
 [[package]]
 name = "enum-map"
@@ -195,20 +249,30 @@ checksum = "f282cfdfe92516eb26c2af8589c274c7c17681f5ecc03c18255fe741c6aa64eb"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.58",
+ "syn 2.0.60",
+]
+
+[[package]]
+name = "env_filter"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a009aa4810eb158359dda09d0c87378e4bbb89b5a801f016885a4707ba24f7ea"
+dependencies = [
+ "log",
+ "regex",
 ]
 
 [[package]]
 name = "env_logger"
-version = "0.10.2"
+version = "0.11.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4cd405aab171cb85d6735e5c8d9db038c17d3ca007a4d2c25f337935c3d90580"
+checksum = "38b35839ba51819680ba087cd351788c9a3c476841207e0b8cee0b04722343b9"
 dependencies = [
+ "anstream",
+ "anstyle",
+ "env_filter",
  "humantime",
- "is-terminal",
  "log",
- "regex",
- "termcolor",
 ]
 
 [[package]]
@@ -283,9 +347,9 @@ dependencies = [
 
 [[package]]
 name = "jobserver"
-version = "0.1.28"
+version = "0.1.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ab46a6e9526ddef3ae7f787c06f0f2600639ba80ea3eade3d8e670a2230f51d6"
+checksum = "685a7d121ee3f65ae4fddd72b25a04bb36b6af81bc0828f7d5434c0fe60fa3a2"
 dependencies = [
  "libc",
 ]
@@ -360,7 +424,7 @@ dependencies = [
 [[package]]
 name = "mmtk"
 version = "0.24.0"
-source = "git+https://github.com/mmtk/mmtk-core.git?rev=5ab62f96c006475285b00b6d20a8b1bf83b74a4d#5ab62f96c006475285b00b6d20a8b1bf83b74a4d"
+source = "git+https://github.com/mmtk/mmtk-core.git?rev=e79e94e744660c486d5471f252ff05c4248bcea9#e79e94e744660c486d5471f252ff05c4248bcea9"
 dependencies = [
  "atomic",
  "atomic-traits",
@@ -395,12 +459,12 @@ dependencies = [
 [[package]]
 name = "mmtk-macros"
 version = "0.24.0"
-source = "git+https://github.com/mmtk/mmtk-core.git?rev=5ab62f96c006475285b00b6d20a8b1bf83b74a4d#5ab62f96c006475285b00b6d20a8b1bf83b74a4d"
+source = "git+https://github.com/mmtk/mmtk-core.git?rev=e79e94e744660c486d5471f252ff05c4248bcea9#e79e94e744660c486d5471f252ff05c4248bcea9"
 dependencies = [
  "proc-macro-error",
  "proc-macro2",
  "quote",
- "syn 2.0.58",
+ "syn 2.0.60",
 ]
 
 [[package]]
@@ -453,17 +517,6 @@ version = "2.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e3148f5046208a5d56bcfc03053e3ca6334e51da8dfb19b6cdc8b306fae3283e"
 
-[[package]]
-name = "pest"
-version = "2.7.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "311fb059dee1a7b802f036316d790138c613a4e8b180c822e3925a662e9f0c95"
-dependencies = [
- "memchr",
- "thiserror",
- "ucd-trie",
-]
-
 [[package]]
 name = "pkg-config"
 version = "0.3.30"
@@ -508,18 +561,18 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.79"
+version = "1.0.81"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e835ff2298f5721608eb1a980ecaee1aef2c132bf95ecc026a11b7bf3c01c02e"
+checksum = "3d1597b0c024618f09a9c3b8655b7e430397a36d23fdafec26d6965e9eec3eba"
 dependencies = [
  "unicode-ident",
 ]
 
 [[package]]
 name = "quote"
-version = "1.0.35"
+version = "1.0.36"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "291ec9ab5efd934aaf503a6466c5d5251535d108ee747472c3977cc5acc868ef"
+checksum = "0fa76aaf39101c457836aec0ce2316dbdc3ab723cdda1c6bd4e6ad4208acaca7"
 dependencies = [
  "proc-macro2",
 ]
@@ -575,9 +628,9 @@ checksum = "adad44e29e4c806119491a7f06f03de4d1af22c3a680dd47f1e6e179439d1f56"
 
 [[package]]
 name = "rustc_version"
-version = "0.3.3"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f0dfe2087c51c460008730de8b57e6a320782fbfb312e1f4d520e6c6fae155ee"
+checksum = "bfa0f585226d2e68097d4f95d113b15b83a82e819ab25717ec0590d9584ef366"
 dependencies = [
  "semver",
 ]
@@ -596,21 +649,9 @@ checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
 
 [[package]]
 name = "semver"
-version = "0.11.0"
+version = "1.0.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f301af10236f6df4160f7c3f04eec6dbc70ace82d23326abad5edee88801c6b6"
-dependencies = [
- "semver-parser",
-]
-
-[[package]]
-name = "semver-parser"
-version = "0.10.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "00b0bef5b7f9e0df16536d3961cfb6e84331c065b4066afb39768d0e319411f7"
-dependencies = [
- "pest",
-]
+checksum = "92d43fe69e652f3df9bdc2b85b2854a0825b86e4fb76bc44d945137d053639ca"
 
 [[package]]
 name = "spin"
@@ -629,21 +670,21 @@ checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"
 
 [[package]]
 name = "strum"
-version = "0.25.0"
+version = "0.26.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "290d54ea6f91c969195bdbcd7442c8c2a2ba87da8bf60a7ee86a235d4bc1e125"
+checksum = "5d8cec3501a5194c432b2b7976db6b7d10ec95c253208b45f83f7136aa985e29"
 
 [[package]]
 name = "strum_macros"
-version = "0.25.3"
+version = "0.26.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "23dc1fa9ac9c169a78ba62f0b841814b7abae11bdd047b9c58f893439e309ea0"
+checksum = "c6cf59daf282c0a494ba14fd21610a0325f9f90ec9d1231dea26bcb1d696c946"
 dependencies = [
  "heck",
  "proc-macro2",
  "quote",
  "rustversion",
- "syn 2.0.58",
+ "syn 2.0.60",
 ]
 
 [[package]]
@@ -653,15 +694,14 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
 dependencies = [
  "proc-macro2",
- "quote",
  "unicode-ident",
 ]
 
 [[package]]
 name = "syn"
-version = "2.0.58"
+version = "2.0.60"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "44cfb93f38070beee36b3fef7d4f5a16f27751d94b187b666a5cc5e9b0d30687"
+checksum = "909518bc7b1c9b779f1bbf07f2929d35af9f0f37e47c6e9ef7f9dddc1e1821f3"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -670,9 +710,9 @@ dependencies = [
 
 [[package]]
 name = "sysinfo"
-version = "0.29.11"
+version = "0.30.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cd727fc423c2060f6c92d9534cef765c65a6ed3f428a03d7def74a8c4348e666"
+checksum = "26d7c217777061d5a2d652aea771fb9ba98b6dade657204b08c4b9604d11555b"
 dependencies = [
  "cfg-if",
  "core-foundation-sys",
@@ -680,36 +720,7 @@ dependencies = [
  "ntapi",
  "once_cell",
  "rayon",
- "winapi",
-]
-
-[[package]]
-name = "termcolor"
-version = "1.4.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "06794f8f6c5c898b3275aebefa6b8a1cb24cd2c6c79397ab15774837a0bc5755"
-dependencies = [
- "winapi-util",
-]
-
-[[package]]
-name = "thiserror"
-version = "1.0.58"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "03468839009160513471e86a034bb2c5c0e4baae3b43f79ffc55c4a5427b3297"
-dependencies = [
- "thiserror-impl",
-]
-
-[[package]]
-name = "thiserror-impl"
-version = "1.0.58"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c61f3ba182994efc43764a46c018c347bc492c79f024e705f46567b418f6d4f7"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn 2.0.58",
+ "windows",
 ]
 
 [[package]]
@@ -727,12 +738,6 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"
 
-[[package]]
-name = "ucd-trie"
-version = "0.1.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ed646292ffc8188ef8ea4d1e0e0150fb15a5c2e12ad9b8fc191ae7a8a7f3c4b9"
-
 [[package]]
 name = "unicode-bidi"
 version = "0.3.15"
@@ -765,6 +770,12 @@ dependencies = [
  "percent-encoding",
 ]
 
+[[package]]
+name = "utf8parse"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "711b9620af191e0cdc7468a8d14e709c3dcdb115b36f838e601583af800a370a"
+
 [[package]]
 name = "vcpkg"
 version = "0.2.15"
@@ -794,19 +805,29 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 
 [[package]]
-name = "winapi-util"
-version = "0.1.6"
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
+[[package]]
+name = "windows"
+version = "0.52.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f29e6f9198ba0d26b4c9f07dbe6f9ed633e1f3d5b8b414090084349e46a52596"
+checksum = "e48a53791691ab099e5e2ad123536d0fff50652600abaf43bbf952894110d0be"
 dependencies = [
- "winapi",
+ "windows-core",
+ "windows-targets",
 ]
 
 [[package]]
-name = "winapi-x86_64-pc-windows-gnu"
-version = "0.4.0"
+name = "windows-core"
+version = "0.52.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+checksum = "33ab640c8d7e35bf8ba19b884ba838ceb4fba93a4e8c65a9059d08afcfc683d9"
+dependencies = [
+ "windows-targets",
+]
 
 [[package]]
 name = "windows-sys"
@@ -819,13 +840,14 @@ dependencies = [
 
 [[package]]
 name = "windows-targets"
-version = "0.52.4"
+version = "0.52.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7dd37b7e5ab9018759f893a1952c9420d060016fc19a472b4bb20d1bdd694d1b"
+checksum = "6f0713a46559409d202e70e28227288446bf7841d3211583a4b53e3f6d96e7eb"
 dependencies = [
  "windows_aarch64_gnullvm",
  "windows_aarch64_msvc",
  "windows_i686_gnu",
+ "windows_i686_gnullvm",
  "windows_i686_msvc",
  "windows_x86_64_gnu",
  "windows_x86_64_gnullvm",
@@ -834,42 +856,48 @@ dependencies = [
 
 [[package]]
 name = "windows_aarch64_gnullvm"
-version = "0.52.4"
+version = "0.52.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bcf46cf4c365c6f2d1cc93ce535f2c8b244591df96ceee75d8e83deb70a9cac9"
+checksum = "7088eed71e8b8dda258ecc8bac5fb1153c5cffaf2578fc8ff5d61e23578d3263"
 
 [[package]]
 name = "windows_aarch64_msvc"
-version = "0.52.4"
+version = "0.52.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "da9f259dd3bcf6990b55bffd094c4f7235817ba4ceebde8e6d11cd0c5633b675"
+checksum = "9985fd1504e250c615ca5f281c3f7a6da76213ebd5ccc9561496568a2752afb6"
 
 [[package]]
 name = "windows_i686_gnu"
-version = "0.52.4"
+version = "0.52.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "88ba073cf16d5372720ec942a8ccbf61626074c6d4dd2e745299726ce8b89670"
+
+[[package]]
+name = "windows_i686_gnullvm"
+version = "0.52.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b474d8268f99e0995f25b9f095bc7434632601028cf86590aea5c8a5cb7801d3"
+checksum = "87f4261229030a858f36b459e748ae97545d6f1ec60e5e0d6a3d32e0dc232ee9"
 
 [[package]]
 name = "windows_i686_msvc"
-version = "0.52.4"
+version = "0.52.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1515e9a29e5bed743cb4415a9ecf5dfca648ce85ee42e15873c3cd8610ff8e02"
+checksum = "db3c2bf3d13d5b658be73463284eaf12830ac9a26a90c717b7f771dfe97487bf"
 
 [[package]]
 name = "windows_x86_64_gnu"
-version = "0.52.4"
+version = "0.52.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5eee091590e89cc02ad514ffe3ead9eb6b660aedca2183455434b93546371a03"
+checksum = "4e4246f76bdeff09eb48875a0fd3e2af6aada79d409d33011886d3e1581517d9"
 
 [[package]]
 name = "windows_x86_64_gnullvm"
-version = "0.52.4"
+version = "0.52.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "77ca79f2451b49fa9e2af39f0747fe999fcda4f5e241b2898624dca97a1f2177"
+checksum = "852298e482cd67c356ddd9570386e2862b5673c85bd5f88df9ab6802b334c596"
 
 [[package]]
 name = "windows_x86_64_msvc"
-version = "0.52.4"
+version = "0.52.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "32b752e52a2da0ddfbdbcc6fceadfeede4c939ed16d13e648833a61dfb611ed8"
+checksum = "bec47e5bfd1bff0eeaf6d8b485cc1074891a197ab4225d504cb7a1ab88b02bf0"
diff --git a/mmtk/Cargo.toml b/mmtk/Cargo.toml
index 9c12a28..49ce271 100644
--- a/mmtk/Cargo.toml
+++ b/mmtk/Cargo.toml
@@ -28,7 +28,7 @@ log = {version = "0.4", features = ["max_level_trace", "release_max_level_off"]
 # - change branch/rev
 # - change repo name
 # But other changes including adding/removing whitespaces in commented lines may break the CI.
-mmtk = { git = "https://github.com/mmtk/mmtk-core.git", rev = "5ab62f96c006475285b00b6d20a8b1bf83b74a4d" }
+mmtk = { git = "https://github.com/mmtk/mmtk-core.git", rev = "e79e94e744660c486d5471f252ff05c4248bcea9" }
 # Uncomment the following to build locally - if you change the path locally, do not commit the change in a PR
 # mmtk = { path = "../repos/mmtk-core" }
 
diff --git a/mmtk/src/api.rs b/mmtk/src/api.rs
index 2da171d..d38206f 100644
--- a/mmtk/src/api.rs
+++ b/mmtk/src/api.rs
@@ -116,7 +116,7 @@ pub extern "C" fn post_alloc(
 #[no_mangle]
 // For a syscall that returns bool, we have to return a i32 instead. See https://github.com/mmtk/mmtk-jikesrvm/issues/20
 pub extern "C" fn will_never_move(object: ObjectReference) -> i32 {
-    !object.is_movable() as i32
+    !object.is_movable::<JikesRVM>() as i32
 }
 
 #[no_mangle]
@@ -168,7 +168,7 @@ pub extern "C" fn handle_user_collection_request(tls: VMMutatorThread) {
 #[no_mangle]
 // For a syscall that returns bool, we have to return a i32 instead. See https://github.com/mmtk/mmtk-jikesrvm/issues/20
 pub extern "C" fn is_live_object(object: ObjectReference) -> i32 {
-    object.is_live() as i32
+    object.is_live::<JikesRVM>() as i32
 }
 
 #[no_mangle]
@@ -211,7 +211,7 @@ pub extern "C" fn add_phantom_candidate(reff: ObjectReference, referent: ObjectR
 
 #[no_mangle]
 pub extern "C" fn get_forwarded_object(object: ObjectReference) -> ObjectReference {
-    match object.get_forwarded_object() {
+    match object.get_forwarded_object::<JikesRVM>() {
         Some(ref_obj) => ref_obj,
         None => ObjectReference::NULL,
     }
@@ -219,7 +219,7 @@ pub extern "C" fn get_forwarded_object(object: ObjectReference) -> ObjectReferen
 
 #[no_mangle]
 pub extern "C" fn is_reachable(object: ObjectReference) -> i32 {
-    object.is_reachable() as i32
+    object.is_reachable::<JikesRVM>() as i32
 }
 
 #[no_mangle]
diff --git a/mmtk/src/object_model.rs b/mmtk/src/object_model.rs
index 325d010..bd36eea 100644
--- a/mmtk/src/object_model.rs
+++ b/mmtk/src/object_model.rs
@@ -431,7 +431,7 @@ impl VMObjectModel {
         // Do we need to copy the hash code?
         if hash_state == HASH_STATE_HASHED {
             unsafe {
-                let hash_code = from_obj.value() >> LOG_BYTES_IN_ADDRESS;
+                let hash_code = from_obj.to_raw_address().as_usize() >> LOG_BYTES_IN_ADDRESS;
                 if DYNAMIC_HASH_OFFSET {
                     (to_obj.to_raw_address()
                         + num_bytes
diff --git a/mmtk/src/scanning.rs b/mmtk/src/scanning.rs
index 3b8a164..d8b1068 100644
--- a/mmtk/src/scanning.rs
+++ b/mmtk/src/scanning.rs
@@ -95,7 +95,7 @@ impl Scanning<JikesRVM> for VMScanning {
         edge_visitor: &mut EV,
     ) {
         if DUMP_REF {
-            let obj_ptr = object.value();
+            let obj_ptr = object.to_raw_address().as_usize();
             unsafe {
                 jtoc_call!(DUMP_REF_METHOD_OFFSET, tls, obj_ptr);
             }