[INFO] fetching crate subsystem 0.0.0...
[INFO] testing subsystem-0.0.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate subsystem 0.0.0 into /workspace/builds/worker-29/source
[INFO] validating manifest of crates.io crate subsystem 0.0.0 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 subsystem 0.0.0
[INFO] finished tweaking crates.io crate subsystem 0.0.0
[INFO] tweaked toml for crates.io crate subsystem 0.0.0 written to /workspace/builds/worker-29/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] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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] a48d6fd85ec01938f7ae280e0158d146c26a7c4e84cb7d878406c99d12f33a39
[INFO] running `Command { std: "docker" "start" "-a" "a48d6fd85ec01938f7ae280e0158d146c26a7c4e84cb7d878406c99d12f33a39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a48d6fd85ec01938f7ae280e0158d146c26a7c4e84cb7d878406c99d12f33a39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a48d6fd85ec01938f7ae280e0158d146c26a7c4e84cb7d878406c99d12f33a39", kill_on_drop: false }`
[INFO] [stdout] a48d6fd85ec01938f7ae280e0158d146c26a7c4e84cb7d878406c99d12f33a39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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] b0274ad610dddda08374834ee4ecaf7887f4aa033d181eac711911ea514cf43b
[INFO] running `Command { std: "docker" "start" "-a" "b0274ad610dddda08374834ee4ecaf7887f4aa033d181eac711911ea514cf43b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling subsystem v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "b0274ad610dddda08374834ee4ecaf7887f4aa033d181eac711911ea514cf43b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0274ad610dddda08374834ee4ecaf7887f4aa033d181eac711911ea514cf43b", kill_on_drop: false }`
[INFO] [stdout] b0274ad610dddda08374834ee4ecaf7887f4aa033d181eac711911ea514cf43b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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] [stdout] e0267a17ad73a4cccea9f31f71769cc2ff2b2ab52181e0a546a0f2fd346a89f4
[INFO] running `Command { std: "docker" "start" "-a" "e0267a17ad73a4cccea9f31f71769cc2ff2b2ab52181e0a546a0f2fd346a89f4", kill_on_drop: false }`
[INFO] [stderr]    Compiling subsystem v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `Command { std: "docker" "inspect" "e0267a17ad73a4cccea9f31f71769cc2ff2b2ab52181e0a546a0f2fd346a89f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0267a17ad73a4cccea9f31f71769cc2ff2b2ab52181e0a546a0f2fd346a89f4", kill_on_drop: false }`
[INFO] [stdout] e0267a17ad73a4cccea9f31f71769cc2ff2b2ab52181e0a546a0f2fd346a89f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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] [stdout] 3a07ae9706f589ede9d2b86e2bca140d4f081f1fa266436f9f12aa0dfdc9437d
[INFO] running `Command { std: "docker" "start" "-a" "3a07ae9706f589ede9d2b86e2bca140d4f081f1fa266436f9f12aa0dfdc9437d", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/subsystem-b18b707580dcdd62)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests subsystem
[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 0.01s
[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" "3a07ae9706f589ede9d2b86e2bca140d4f081f1fa266436f9f12aa0dfdc9437d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a07ae9706f589ede9d2b86e2bca140d4f081f1fa266436f9f12aa0dfdc9437d", kill_on_drop: false }`
[INFO] [stdout] 3a07ae9706f589ede9d2b86e2bca140d4f081f1fa266436f9f12aa0dfdc9437d