[INFO] fetching crate mfd 0.0.0...
[INFO] testing mfd-0.0.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate mfd 0.0.0 into /workspace/builds/worker-54/source
[INFO] validating manifest of crates.io crate mfd 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 mfd 0.0.0
[INFO] finished tweaking crates.io crate mfd 0.0.0
[INFO] tweaked toml for crates.io crate mfd 0.0.0 written to /workspace/builds/worker-54/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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] fd38f4178387f497b62a57021bbfb3eded1f7e6ee591ce0b1f1fe5792ce5075a
[INFO] running `Command { std: "docker" "start" "-a" "fd38f4178387f497b62a57021bbfb3eded1f7e6ee591ce0b1f1fe5792ce5075a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd38f4178387f497b62a57021bbfb3eded1f7e6ee591ce0b1f1fe5792ce5075a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd38f4178387f497b62a57021bbfb3eded1f7e6ee591ce0b1f1fe5792ce5075a", kill_on_drop: false }`
[INFO] [stdout] fd38f4178387f497b62a57021bbfb3eded1f7e6ee591ce0b1f1fe5792ce5075a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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] 0d0a5fca29a5c09d9fc6e815303b5fa94df5d383b6e3db33181208cb602fafa0
[INFO] running `Command { std: "docker" "start" "-a" "0d0a5fca29a5c09d9fc6e815303b5fa94df5d383b6e3db33181208cb602fafa0", kill_on_drop: false }`
[INFO] [stderr]    Compiling mfd v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.27s
[INFO] running `Command { std: "docker" "inspect" "0d0a5fca29a5c09d9fc6e815303b5fa94df5d383b6e3db33181208cb602fafa0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d0a5fca29a5c09d9fc6e815303b5fa94df5d383b6e3db33181208cb602fafa0", kill_on_drop: false }`
[INFO] [stdout] 0d0a5fca29a5c09d9fc6e815303b5fa94df5d383b6e3db33181208cb602fafa0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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] 3cd6da6a0a9448a44046094c03aab87d0d8e09ce7d9dbd046403f726a41d4d7e
[INFO] running `Command { std: "docker" "start" "-a" "3cd6da6a0a9448a44046094c03aab87d0d8e09ce7d9dbd046403f726a41d4d7e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mfd v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.22s
[INFO] running `Command { std: "docker" "inspect" "3cd6da6a0a9448a44046094c03aab87d0d8e09ce7d9dbd046403f726a41d4d7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cd6da6a0a9448a44046094c03aab87d0d8e09ce7d9dbd046403f726a41d4d7e", kill_on_drop: false }`
[INFO] [stdout] 3cd6da6a0a9448a44046094c03aab87d0d8e09ce7d9dbd046403f726a41d4d7e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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] 663e068b33866fa443c2132acead6b987a80de83ae7456003a25aeb0b465ed17
[INFO] running `Command { std: "docker" "start" "-a" "663e068b33866fa443c2132acead6b987a80de83ae7456003a25aeb0b465ed17", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.64s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mfd-11356c6ff1329b1b)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mfd
[INFO] [stdout] test result: ok. 0 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" "663e068b33866fa443c2132acead6b987a80de83ae7456003a25aeb0b465ed17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "663e068b33866fa443c2132acead6b987a80de83ae7456003a25aeb0b465ed17", kill_on_drop: false }`
[INFO] [stdout] 663e068b33866fa443c2132acead6b987a80de83ae7456003a25aeb0b465ed17