[INFO] fetching crate loom 0.4.0...
[INFO] testing loom-0.4.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate loom 0.4.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate loom 0.4.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate loom 0.4.0
[INFO] finished tweaking crates.io crate loom 0.4.0
[INFO] tweaked toml for crates.io crate loom 0.4.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d2b5788b1135d2ede813480f523225b2a0a936c5d0eb8dfd1e7aed50f19eb104
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d2b5788b1135d2ede813480f523225b2a0a936c5d0eb8dfd1e7aed50f19eb104", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2b5788b1135d2ede813480f523225b2a0a936c5d0eb8dfd1e7aed50f19eb104", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2b5788b1135d2ede813480f523225b2a0a936c5d0eb8dfd1e7aed50f19eb104", kill_on_drop: false }`
[INFO] [stdout] d2b5788b1135d2ede813480f523225b2a0a936c5d0eb8dfd1e7aed50f19eb104
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ba973f9c92b9ba575bd01c1d8bd6e16d7934937b6880771edbcfb269b1c22b37
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ba973f9c92b9ba575bd01c1d8bd6e16d7934937b6880771edbcfb269b1c22b37", kill_on_drop: false }`
[INFO] [stderr]    Compiling scoped-tls v1.0.0
[INFO] [stderr]    Compiling generator v0.6.23
[INFO] [stderr]    Compiling loom v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.42s
[INFO] running `Command { std: "docker" "inspect" "ba973f9c92b9ba575bd01c1d8bd6e16d7934937b6880771edbcfb269b1c22b37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba973f9c92b9ba575bd01c1d8bd6e16d7934937b6880771edbcfb269b1c22b37", kill_on_drop: false }`
[INFO] [stdout] ba973f9c92b9ba575bd01c1d8bd6e16d7934937b6880771edbcfb269b1c22b37
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] cd4e31a51f8196a4be0554cb75803b8d69c2aeae936a0db377132d9d037650c1
[INFO] running `Command { std: "docker" "start" "-a" "cd4e31a51f8196a4be0554cb75803b8d69c2aeae936a0db377132d9d037650c1", kill_on_drop: false }`
[INFO] [stderr]    Compiling loom v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 15.82s
[INFO] running `Command { std: "docker" "inspect" "cd4e31a51f8196a4be0554cb75803b8d69c2aeae936a0db377132d9d037650c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd4e31a51f8196a4be0554cb75803b8d69c2aeae936a0db377132d9d037650c1", kill_on_drop: false }`
[INFO] [stdout] cd4e31a51f8196a4be0554cb75803b8d69c2aeae936a0db377132d9d037650c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3334146b045102a0c1fa910aa2d7ee766b8f481009f021869afe9d337fadb615
[INFO] running `Command { std: "docker" "start" "-a" "3334146b045102a0c1fa910aa2d7ee766b8f481009f021869afe9d337fadb615", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/loom-4abb3488f83bb30c
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/arc-dde60ca24d819725
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test sync_in_drop ... ok
[INFO] [stdout] test detect_mem_leak ... ok
[INFO] [stdout] test basic_usage ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/atomic-19cede23ceb0673c
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test compare_and_swap_reads_old_values ... ignored
[INFO] [stdout] test invalid_unsync_load_relaxed ... ok
[INFO] [stdout] test lazy_static_arc_race ... ok
[INFO] [stdout] test legal_load_after_lazy_static ... ok
[INFO] [stdout] test lazy_static_arc_shutdown ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/atomic_int-2fa4a223549a2ee6
[INFO] [stdout] test lazy_static_arc_doesnt_leak ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 30 tests
[INFO] [stdout] test atomic_i16::compare_exchange_weak ... ignored
[INFO] [stdout] test atomic_i32::compare_exchange_weak ... ignored
[INFO] [stdout] test atomic_i64::compare_exchange_weak ... ignored
[INFO] [stdout] test atomic_i8::compare_exchange_weak ... ignored
[INFO] [stdout] test atomic_isize::compare_exchange_weak ... ignored
[INFO] [stdout] test atomic_u16::compare_exchange_weak ... ignored
[INFO] [stdout] test atomic_u32::compare_exchange_weak ... ignored
[INFO] [stdout] test atomic_i32::compare_exchange ... ok
[INFO] [stdout] test atomic_isize::xor ... ok
[INFO] [stdout] test atomic_i8::compare_exchange ... ok
[INFO] [stdout] test atomic_u64::compare_exchange_weak ... ignored
[INFO] [stdout] test atomic_isize::compare_exchange ... ok
[INFO] [stdout] test atomic_u64::xor ... ok
[INFO] [stdout] test atomic_u8::compare_exchange_weak ... ignored
[INFO] [stdout] test atomic_u32::xor ... ok
[INFO] [stdout] test atomic_usize::compare_exchange_weak ... ignored
[INFO] [stdout] test atomic_i16::xor ... ok
[INFO] [stdout] test atomic_u16::xor ... ok
[INFO] [stdout] test atomic_i64::xor ... ok
[INFO] [stdout] test atomic_i64::compare_exchange ... ok
[INFO] [stdout] test atomic_u64::compare_exchange ... ok
[INFO] [stdout] test atomic_i16::compare_exchange ... ok
[INFO] [stdout] test atomic_u16::compare_exchange ... ok
[INFO] [stdout] test atomic_usize::xor ... ok
[INFO] [stdout] test atomic_i32::xor ... ok
[INFO] [stdout] test atomic_usize::compare_exchange ... ok
[INFO] [stdout] test atomic_u8::compare_exchange ... ok
[INFO] [stdout] test atomic_u32::compare_exchange ... ok
[INFO] [stdout] test atomic_u8::xor ... ok
[INFO] [stdout] test atomic_i8::xor ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 20 passed; 0 failed; 10 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/atomic_relaxed-99f3d9f6b18f61ac
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test check_ordering_invalid_1 ... ok
[INFO] [stdout] test check_ordering_invalid_2 ... ok
[INFO] [stdout] test compare_and_swap ... ok
[INFO] [stdout] test check_ordering_valid ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/condvar-c65ad2b6acefe80a
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test notify_one ... ok
[INFO] [stdout] test notify_all ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/fence-a127c1fa037b169f
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/futures-a6dd6abdfcf41d92
[INFO] [stdout] running 1 test
[INFO] [stdout] test basic_acquire_fence ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mpsc-f2018dc5f1545801
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test basic_parallel_usage ... ok
[INFO] [stdout] test non_commutative_senders1 ... ok
[INFO] [stdout] test non_commutative_senders2 ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mutex-e7366d15d1460c38
[INFO] [stdout] test basic_sequential_usage ... ok
[INFO] [stdout] test commutative_senders ... ok
[INFO] [stdout] test drop_receiver ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test mutex_establishes_seq_cst ... ok
[INFO] [stdout] test mutex_enforces_mutal_exclusion ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rwlock-54050047523f652c
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test rwlock_write ... ok
[INFO] [stdout] test rwlock_read_one ... ok
[INFO] [stdout] test rwlock_try_read ... ok
[INFO] [stdout] test rwlock_try_write ... ok
[INFO] [stdout] test rwlock_read_two_write_one ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rwlock_regression1-67a4f8685da91fd0
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test rwlock_two_writers ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/smoke-737445232a64269b
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test checks_fail ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/thread_api-a510bf17b43bd80c
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test initial_thread ... ok
[INFO] [stdout] test thread_names ... ok
[INFO] [stdout] test threads_have_unique_ids ... ok
[INFO] [stdout] test alt_join ... ok
[INFO] [stdout] test many_joins ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/thread_local-ebef087ee92c1713
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/unsafe_cell-a35d2f99855882b3
[INFO] [stdout] test drop ... ok
[INFO] [stdout] test nested_with ... ok
[INFO] [stdout] test thread_local ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test atomic_causality_fail ... ok
[INFO] [stdout] test unsafe_cell_race_mut_immut_5 ... ok
[INFO] [stdout] test unsafe_cell_race_mut_immut_4 ... ok
[INFO] [stdout] test unsafe_cell_access_after_sync ... ok
[INFO] [stdout] test unsafe_cell_race_mut_immut_2 ... ok
[INFO] [stdout] test unsafe_cell_race_mut_immut_1 ... ok
[INFO] [stdout] test unsafe_cell_race_mut_immut_3 ... ok
[INFO] [stdout] test unsafe_cell_race_mut_mut_1 ... ok
[INFO] [stdout] test unsafe_cell_race_mut_mut_2 ... ok
[INFO] [stdout] test unsafe_cell_ok_2 ... ok
[INFO] [stdout] test unsafe_cell_ok_1 ... ok
[INFO] [stdout] test unsafe_cell_ok_3 ... ok
[INFO] [stdout] test atomic_causality_success ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/yield-9ba7fd3f6fc8cf58
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests loom
[INFO] [stdout] test yield_completes ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 53) ... ok
[INFO] [stdout] test src/lib.rs - (line 14) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3334146b045102a0c1fa910aa2d7ee766b8f481009f021869afe9d337fadb615", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3334146b045102a0c1fa910aa2d7ee766b8f481009f021869afe9d337fadb615", kill_on_drop: false }`
[INFO] [stdout] 3334146b045102a0c1fa910aa2d7ee766b8f481009f021869afe9d337fadb615