[INFO] fetching crate locker 0.4.3...
[INFO] testing locker-0.4.3 against 1.55.0 for beta-1.56-1
[INFO] extracting crate locker 0.4.3 into /workspace/builds/worker-64/source
[INFO] validating manifest of crates.io crate locker 0.4.3 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate locker 0.4.3
[INFO] finished tweaking crates.io crate locker 0.4.3
[INFO] tweaked toml for crates.io crate locker 0.4.3 written to /workspace/builds/worker-64/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 18dc1fb6a7bbfb497e8763c13434d51142b9cc64ca29f71d8924cf71776595c0
[INFO] running `Command { std: "docker" "start" "-a" "18dc1fb6a7bbfb497e8763c13434d51142b9cc64ca29f71d8924cf71776595c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "18dc1fb6a7bbfb497e8763c13434d51142b9cc64ca29f71d8924cf71776595c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18dc1fb6a7bbfb497e8763c13434d51142b9cc64ca29f71d8924cf71776595c0", kill_on_drop: false }`
[INFO] [stdout] 18dc1fb6a7bbfb497e8763c13434d51142b9cc64ca29f71d8924cf71776595c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ed494c4f4fc28bfdf242fdc964016c276ea7976cfc70a45f8f9a66780222ff58
[INFO] running `Command { std: "docker" "start" "-a" "ed494c4f4fc28bfdf242fdc964016c276ea7976cfc70a45f8f9a66780222ff58", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling bytes v0.5.6
[INFO] [stderr]    Compiling pin-project-lite v0.1.12
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling tokio v0.2.25
[INFO] [stderr]    Compiling locker v0.4.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.11s
[INFO] running `Command { std: "docker" "inspect" "ed494c4f4fc28bfdf242fdc964016c276ea7976cfc70a45f8f9a66780222ff58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed494c4f4fc28bfdf242fdc964016c276ea7976cfc70a45f8f9a66780222ff58", kill_on_drop: false }`
[INFO] [stdout] ed494c4f4fc28bfdf242fdc964016c276ea7976cfc70a45f8f9a66780222ff58
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9ded006ac3610666e17269864e0d313b237831a3616c6b2492534fc8d9171758
[INFO] running `Command { std: "docker" "start" "-a" "9ded006ac3610666e17269864e0d313b237831a3616c6b2492534fc8d9171758", kill_on_drop: false }`
[INFO] [stderr]    Compiling locker v0.4.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.97s
[INFO] running `Command { std: "docker" "inspect" "9ded006ac3610666e17269864e0d313b237831a3616c6b2492534fc8d9171758", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ded006ac3610666e17269864e0d313b237831a3616c6b2492534fc8d9171758", kill_on_drop: false }`
[INFO] [stdout] 9ded006ac3610666e17269864e0d313b237831a3616c6b2492534fc8d9171758
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0ae333f520417997cb625386275fec156965c8870c05c121aee508744656141e
[INFO] running `Command { std: "docker" "start" "-a" "0ae333f520417997cb625386275fec156965c8870c05c121aee508744656141e", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/locker-d12c62950f2bdc56)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test non_blocking::tests::test_async_default_locker ... ok
[INFO] [stdout] test non_blocking::tests::test_async_locker ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.21s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests locker
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/non_blocking.rs - non_blocking::AsyncLocker<K, V>::get_mutex (line 34) ... ignored
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0ae333f520417997cb625386275fec156965c8870c05c121aee508744656141e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ae333f520417997cb625386275fec156965c8870c05c121aee508744656141e", kill_on_drop: false }`
[INFO] [stdout] 0ae333f520417997cb625386275fec156965c8870c05c121aee508744656141e