Mac bot occationally fails on 3 time::tests

[lht]

test test::tests::filter_for_ignored_option ... ok
ust: upcall fail 'explicit failure', /Users/administrator/src/rustbot/workspace-try-i386-unknown-darwin/src/src/libstd/test.rs:451
test test::tests::first_free_arg_should_be_a_filter ... ok
test test::tests::ignored_tests_result_in_ignored ... ok
rust: upcall fail 'Assertion local.tm_hour == 15i32 failed', /Users/administrator/src/rustbot/workspace-try-i386-unknown-darwin/src/src/libstd/time.rs:898
test test::tests::do_not_run_ignored_tests ... ok
test test::tests::parse_ignored_flag ... ok
test test::tests::sort_tests ... ok
test time::tests::test_at_utc ... ok
rust: upcall fail 'Assertion local.ctime() == "Fri Feb 13 15:31:30 2009" failed', /Users/administrator/src/rustbot/workspace-try-i386-unknown-darwin/src/src/libstd/time.rs:1096
test test::tests::test_should_fail ... ok
test time::tests::test_at ... FAILED
test test::tests::test_should_fail_but_succeeds ... ok
rust: upcall fail 'Assertion local.strftime("%c") == "Fri Feb 13 15:31:30 2009" failed', /Users/administrator/src/rustbot/workspace-try-i386-unknown-darwin/src/src/libstd/time.rs:1113
test time::tests::test_conversions ... ok
test time::tests::test_get_time ... ok
test time::tests::test_to_timespec ... ok
test time::tests::test_ctime ... FAILED
test time::tests::test_strftime ... FAILED
test time::tests::test_strptime ... ok

...

failures:
    time::tests::test_at
    time::tests::test_ctime
    time::tests::test_strftime

Observed twice. Both fixed with a second run.

http://bot.rust-lang.org/logs/2012/03/08/2012-04-08T13:42:45Z-9fb619fa-f48a-4d10-9f85-0ab4bd088281.html
http://bot.rust-lang.org/logs/2012/03/08/2012-04-08T13:42:45Z-9fb619fa-f48a-4d10-9f85-0ab4bd088281.html

[brson]

@erickt may know what's going on

[erickt]

Had some time to poke at this today. The problem is that every once in a while on i386 osx, the explicit timezone that I'm setting doesn't seem to stick, and we're defaulting back to UTC time. I'm not sure exactly why this is happening, but I suspect threads are involved.

[tedhorst]

So it seems related to #1333. I see in os.rs that the setenv tests are ignored because they fail on mac.

[brson]

Should be fixed by 46cc11e