[INFO] fetching crate fields 0.0.1...
[INFO] testing fields-0.0.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate fields 0.0.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate fields 0.0.1 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fields 0.0.1
[INFO] finished tweaking crates.io crate fields 0.0.1
[INFO] tweaked toml for crates.io crate fields 0.0.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] acb7c02d4cee4b47a6e094cb211a75ca2dfc5cc5c3c42210708de88aea6fe750
[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" "acb7c02d4cee4b47a6e094cb211a75ca2dfc5cc5c3c42210708de88aea6fe750", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "acb7c02d4cee4b47a6e094cb211a75ca2dfc5cc5c3c42210708de88aea6fe750", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acb7c02d4cee4b47a6e094cb211a75ca2dfc5cc5c3c42210708de88aea6fe750", kill_on_drop: false }`
[INFO] [stdout] acb7c02d4cee4b47a6e094cb211a75ca2dfc5cc5c3c42210708de88aea6fe750
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85382723789d88de1ab5cdca9d4bfb5970a89efbd81ea1eec768bdc745141f87
[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" "85382723789d88de1ab5cdca9d4bfb5970a89efbd81ea1eec768bdc745141f87", kill_on_drop: false }`
[INFO] [stderr]    Compiling fields v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.41s
[INFO] running `Command { std: "docker" "inspect" "85382723789d88de1ab5cdca9d4bfb5970a89efbd81ea1eec768bdc745141f87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85382723789d88de1ab5cdca9d4bfb5970a89efbd81ea1eec768bdc745141f87", kill_on_drop: false }`
[INFO] [stdout] 85382723789d88de1ab5cdca9d4bfb5970a89efbd81ea1eec768bdc745141f87
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta-2021-09-08" "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] e4def7ca57df4611bd0234d8fe33e686bd175c81854e1c9eb5227ce729d1281f
[INFO] running `Command { std: "docker" "start" "-a" "e4def7ca57df4611bd0234d8fe33e686bd175c81854e1c9eb5227ce729d1281f", kill_on_drop: false }`
[INFO] [stderr]    Compiling trybuild v1.0.45
[INFO] [stderr]    Compiling serde_json v1.0.67
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling fields v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 17.68s
[INFO] running `Command { std: "docker" "inspect" "e4def7ca57df4611bd0234d8fe33e686bd175c81854e1c9eb5227ce729d1281f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4def7ca57df4611bd0234d8fe33e686bd175c81854e1c9eb5227ce729d1281f", kill_on_drop: false }`
[INFO] [stdout] e4def7ca57df4611bd0234d8fe33e686bd175c81854e1c9eb5227ce729d1281f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta-2021-09-08" "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] ac80852b35a9250c897d9c137c74f174d375bee4bb5bbc04fa89ec0cd50e4ea6
[INFO] running `Command { std: "docker" "start" "-a" "ac80852b35a9250c897d9c137c74f174d375bee4bb5bbc04fa89ec0cd50e4ea6", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/fields-517ef726870a7d53)
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stderr]    Doc-tests fields
[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] [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" "ac80852b35a9250c897d9c137c74f174d375bee4bb5bbc04fa89ec0cd50e4ea6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac80852b35a9250c897d9c137c74f174d375bee4bb5bbc04fa89ec0cd50e4ea6", kill_on_drop: false }`
[INFO] [stdout] ac80852b35a9250c897d9c137c74f174d375bee4bb5bbc04fa89ec0cd50e4ea6