[INFO] fetching crate sync-slab 0.0.0...
[INFO] testing sync-slab-0.0.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate sync-slab 0.0.0 into /workspace/builds/worker-48/source
[INFO] validating manifest of crates.io crate sync-slab 0.0.0 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 sync-slab 0.0.0
[INFO] finished tweaking crates.io crate sync-slab 0.0.0
[INFO] tweaked toml for crates.io crate sync-slab 0.0.0 written to /workspace/builds/worker-48/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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] 018099ced56ce7fc9e857929c70d4a934f817957f784004d137cf8b6303cb41f
[INFO] running `Command { std: "docker" "start" "-a" "018099ced56ce7fc9e857929c70d4a934f817957f784004d137cf8b6303cb41f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "018099ced56ce7fc9e857929c70d4a934f817957f784004d137cf8b6303cb41f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "018099ced56ce7fc9e857929c70d4a934f817957f784004d137cf8b6303cb41f", kill_on_drop: false }`
[INFO] [stdout] 018099ced56ce7fc9e857929c70d4a934f817957f784004d137cf8b6303cb41f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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] 7e5e5c73e8efad6912e65c121d8f2214fd76059281946e151063c1e6051b39ef
[INFO] running `Command { std: "docker" "start" "-a" "7e5e5c73e8efad6912e65c121d8f2214fd76059281946e151063c1e6051b39ef", kill_on_drop: false }`
[INFO] [stderr]    Compiling sync-slab v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "7e5e5c73e8efad6912e65c121d8f2214fd76059281946e151063c1e6051b39ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e5e5c73e8efad6912e65c121d8f2214fd76059281946e151063c1e6051b39ef", kill_on_drop: false }`
[INFO] [stdout] 7e5e5c73e8efad6912e65c121d8f2214fd76059281946e151063c1e6051b39ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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] 8b4e5794d15f1a90a2674f9a4a52fc333bd097c05a541dd5e4e50c4bf4e868d1
[INFO] running `Command { std: "docker" "start" "-a" "8b4e5794d15f1a90a2674f9a4a52fc333bd097c05a541dd5e4e50c4bf4e868d1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling sync-slab v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "8b4e5794d15f1a90a2674f9a4a52fc333bd097c05a541dd5e4e50c4bf4e868d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b4e5794d15f1a90a2674f9a4a52fc333bd097c05a541dd5e4e50c4bf4e868d1", kill_on_drop: false }`
[INFO] [stdout] 8b4e5794d15f1a90a2674f9a4a52fc333bd097c05a541dd5e4e50c4bf4e868d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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] a199f0e149376869e049dce024a7cb3f892c55340f9fdc1c7136c6c3a4f5de3c
[INFO] running `Command { std: "docker" "start" "-a" "a199f0e149376869e049dce024a7cb3f892c55340f9fdc1c7136c6c3a4f5de3c", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/sync_slab-472d8f75ee201cf5)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests sync-slab
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a199f0e149376869e049dce024a7cb3f892c55340f9fdc1c7136c6c3a4f5de3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a199f0e149376869e049dce024a7cb3f892c55340f9fdc1c7136c6c3a4f5de3c", kill_on_drop: false }`
[INFO] [stdout] a199f0e149376869e049dce024a7cb3f892c55340f9fdc1c7136c6c3a4f5de3c