[INFO] fetching crate value-trait 0.1.19...
[INFO] testing value-trait-0.1.19 against 1.49.0 for beta-1.50-1
[INFO] extracting crate value-trait 0.1.19 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate value-trait 0.1.19 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 value-trait 0.1.19
[INFO] finished tweaking crates.io crate value-trait 0.1.19
[INFO] tweaked toml for crates.io crate value-trait 0.1.19 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] 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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 94fe26a760561ba50b11a0325e815149432502c985252a0c9d8f3eedb234644a
[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" "94fe26a760561ba50b11a0325e815149432502c985252a0c9d8f3eedb234644a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "94fe26a760561ba50b11a0325e815149432502c985252a0c9d8f3eedb234644a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94fe26a760561ba50b11a0325e815149432502c985252a0c9d8f3eedb234644a", kill_on_drop: false }`
[INFO] [stdout] 94fe26a760561ba50b11a0325e815149432502c985252a0c9d8f3eedb234644a
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c23fc9f7f6488531f8ad4d148a4fe4e6bd7d0fc95ebbd9896a74dedd490dd773
[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" "c23fc9f7f6488531f8ad4d148a4fe4e6bd7d0fc95ebbd9896a74dedd490dd773", kill_on_drop: false }`
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling float-cmp v0.7.0
[INFO] [stderr]    Compiling halfbrown v0.1.11
[INFO] [stderr]    Compiling value-trait v0.1.19 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.11s
[INFO] running `Command { std: "docker" "inspect" "c23fc9f7f6488531f8ad4d148a4fe4e6bd7d0fc95ebbd9896a74dedd490dd773", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c23fc9f7f6488531f8ad4d148a4fe4e6bd7d0fc95ebbd9896a74dedd490dd773", kill_on_drop: false }`
[INFO] [stdout] c23fc9f7f6488531f8ad4d148a4fe4e6bd7d0fc95ebbd9896a74dedd490dd773
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 989b5720007b5305b182a0df04aab063dff948811c72f546934bf90ea69da2cb
[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" "989b5720007b5305b182a0df04aab063dff948811c72f546934bf90ea69da2cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling value-trait v0.1.19 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `Command { std: "docker" "inspect" "989b5720007b5305b182a0df04aab063dff948811c72f546934bf90ea69da2cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "989b5720007b5305b182a0df04aab063dff948811c72f546934bf90ea69da2cb", kill_on_drop: false }`
[INFO] [stdout] 989b5720007b5305b182a0df04aab063dff948811c72f546934bf90ea69da2cb
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e85115c5103a6d4b4b83833fcec4f3df8ff46dbb8450eb69997bae1a5b7423bb
[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" "e85115c5103a6d4b4b83833fcec4f3df8ff46dbb8450eb69997bae1a5b7423bb", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/value_trait-d6fc984ea2bcfb1a
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests value-trait
[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
[INFO] [stdout] 
[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] running `Command { std: "docker" "inspect" "e85115c5103a6d4b4b83833fcec4f3df8ff46dbb8450eb69997bae1a5b7423bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e85115c5103a6d4b4b83833fcec4f3df8ff46dbb8450eb69997bae1a5b7423bb", kill_on_drop: false }`
[INFO] [stdout] e85115c5103a6d4b4b83833fcec4f3df8ff46dbb8450eb69997bae1a5b7423bb