[INFO] fetching crate async-mutex 1.4.0...
[INFO] testing async-mutex-1.4.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate async-mutex 1.4.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate async-mutex 1.4.0 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 async-mutex 1.4.0
[INFO] finished tweaking crates.io crate async-mutex 1.4.0
[INFO] tweaked toml for crates.io crate async-mutex 1.4.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate async-mutex 1.4.0 already has a lockfile, it will not be regenerated
[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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", 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] 1b0e623368ecb95c2aae16178552029d08ecd8dc15a7ad917dd1cdeb2cdffab0
[INFO] running `Command { std: "docker" "start" "-a" "1b0e623368ecb95c2aae16178552029d08ecd8dc15a7ad917dd1cdeb2cdffab0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1b0e623368ecb95c2aae16178552029d08ecd8dc15a7ad917dd1cdeb2cdffab0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b0e623368ecb95c2aae16178552029d08ecd8dc15a7ad917dd1cdeb2cdffab0", kill_on_drop: false }`
[INFO] [stdout] 1b0e623368ecb95c2aae16178552029d08ecd8dc15a7ad917dd1cdeb2cdffab0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 36e7f899927ee2cac8a70b0f986ca2d8579c8d02f8d9bb53a863343c43b2cccd
[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" "36e7f899927ee2cac8a70b0f986ca2d8579c8d02f8d9bb53a863343c43b2cccd", kill_on_drop: false }`
[INFO] [stderr]    Compiling async-mutex v1.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `Command { std: "docker" "inspect" "36e7f899927ee2cac8a70b0f986ca2d8579c8d02f8d9bb53a863343c43b2cccd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36e7f899927ee2cac8a70b0f986ca2d8579c8d02f8d9bb53a863343c43b2cccd", kill_on_drop: false }`
[INFO] [stdout] 36e7f899927ee2cac8a70b0f986ca2d8579c8d02f8d9bb53a863343c43b2cccd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d4a78ab0dfe1d7f426b3fec411e7fd10d080d74695de312c629afec3b970a49c
[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" "d4a78ab0dfe1d7f426b3fec411e7fd10d080d74695de312c629afec3b970a49c", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]    Compiling futures-sink v0.3.5
[INFO] [stderr]    Compiling proc-macro-hack v0.5.18
[INFO] [stderr]    Compiling smallvec v1.4.2
[INFO] [stderr]    Compiling async-task v4.0.2
[INFO] [stderr]    Compiling parking v1.0.6
[INFO] [stderr]    Compiling scoped-tls v1.0.0
[INFO] [stderr]    Compiling futures-task v0.3.5
[INFO] [stderr]    Compiling async-mutex v1.3.0
[INFO] [stderr]    Compiling async-channel v1.4.2
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling socket2 v0.3.15
[INFO] [stderr]    Compiling polling v1.1.0
[INFO] [stderr]    Compiling futures-channel v0.3.5
[INFO] [stderr]    Compiling parking_lot_core v0.7.2
[INFO] [stderr]    Compiling parking_lot v0.10.2
[INFO] [stderr]    Compiling futures-lite v1.8.0
[INFO] [stderr]    Compiling futures-lite v0.1.11
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling tokio v0.2.22
[INFO] [stderr]    Compiling futures-intrusive v0.3.1
[INFO] [stderr]    Compiling blocking v0.4.7
[INFO] [stderr]    Compiling async-executor v1.3.0
[INFO] [stderr]    Compiling async-io v1.1.2
[INFO] [stderr]    Compiling blocking v1.0.0
[INFO] [stderr]    Compiling async-global-executor v1.2.1
[INFO] [stderr]    Compiling async-std v1.6.4
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling pin-project v0.4.23
[INFO] [stderr]    Compiling futures-util v0.3.5
[INFO] [stderr]    Compiling futures-executor v0.3.5
[INFO] [stderr]    Compiling smol v0.1.18
[INFO] [stderr]    Compiling futures v0.3.5
[INFO] [stderr]    Compiling async-mutex v1.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1m 12s
[INFO] running `Command { std: "docker" "inspect" "d4a78ab0dfe1d7f426b3fec411e7fd10d080d74695de312c629afec3b970a49c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4a78ab0dfe1d7f426b3fec411e7fd10d080d74695de312c629afec3b970a49c", kill_on_drop: false }`
[INFO] [stdout] d4a78ab0dfe1d7f426b3fec411e7fd10d080d74695de312c629afec3b970a49c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/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] c728d128a64c480803a99cba95c4fcf8e05cc705ec6d4e39b5c8673f7c0fef53
[INFO] running `Command { std: "docker" "start" "-a" "c728d128a64c480803a99cba95c4fcf8e05cc705ec6d4e39b5c8673f7c0fef53", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/async_mutex-3ac5c065e056398d
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mutex-713747fa115690bc
[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 5 tests
[INFO] [stdout] test into_inner ... ok
[INFO] [stdout] test try_lock ... ok
[INFO] [stdout] test get_mut ... ok
[INFO] [stdout] test smoke ... ok
[INFO] [stderr]    Doc-tests async-mutex
[INFO] [stdout] test contention ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test src/lib.rs - Mutex<T>::new (line 60) ... ok
[INFO] [stdout] test src/lib.rs - Mutex<T>::into_inner (line 77) ... ok
[INFO] [stdout] test src/lib.rs - Mutex<T>::try_lock (line 209) ... ok
[INFO] [stdout] test src/lib.rs - (line 9) ... ok
[INFO] [stdout] test src/lib.rs - Mutex<T>::try_lock_arc (line 281) ... ok
[INFO] [stdout] test src/lib.rs - Mutex<T>::get_mut (line 234) ... ok
[INFO] [stdout] test src/lib.rs - MutexGuard::source (line 340) ... ok
[INFO] [stdout] test src/lib.rs - Mutex<T>::lock (line 95) ... ok
[INFO] [stdout] test src/lib.rs - Mutex<T>::lock_arc (line 255) ... ok
[INFO] [stdout] test src/lib.rs - MutexGuardArc<T>::source (line 399) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c728d128a64c480803a99cba95c4fcf8e05cc705ec6d4e39b5c8673f7c0fef53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c728d128a64c480803a99cba95c4fcf8e05cc705ec6d4e39b5c8673f7c0fef53", kill_on_drop: false }`
[INFO] [stdout] c728d128a64c480803a99cba95c4fcf8e05cc705ec6d4e39b5c8673f7c0fef53