[INFO] fetching crate mer 0.4.0...
[INFO] testing mer-0.4.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate mer 0.4.0 into /workspace/builds/worker-97/source
[INFO] validating manifest of crates.io crate mer 0.4.0 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 mer 0.4.0
[INFO] finished tweaking crates.io crate mer 0.4.0
[INFO] tweaked toml for crates.io crate mer 0.4.0 written to /workspace/builds/worker-97/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/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] a3d1fa381db8c1775aa1aa83a45cb71acd11af7e43f543e916c669afe4d83063
[INFO] running `Command { std: "docker" "start" "-a" "a3d1fa381db8c1775aa1aa83a45cb71acd11af7e43f543e916c669afe4d83063", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a3d1fa381db8c1775aa1aa83a45cb71acd11af7e43f543e916c669afe4d83063", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3d1fa381db8c1775aa1aa83a45cb71acd11af7e43f543e916c669afe4d83063", kill_on_drop: false }`
[INFO] [stdout] a3d1fa381db8c1775aa1aa83a45cb71acd11af7e43f543e916c669afe4d83063
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/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] d6ad2ca011ad0533b4412ab52e9fd1cd2f029d6a3aca7411b2611c38f0e4556d
[INFO] running `Command { std: "docker" "start" "-a" "d6ad2ca011ad0533b4412ab52e9fd1cd2f029d6a3aca7411b2611c38f0e4556d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling bit_field v0.10.1
[INFO] [stderr]    Compiling scroll_derive v0.10.5
[INFO] [stderr]    Compiling scroll v0.10.2
[INFO] [stderr]    Compiling mer v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.11s
[INFO] running `Command { std: "docker" "inspect" "d6ad2ca011ad0533b4412ab52e9fd1cd2f029d6a3aca7411b2611c38f0e4556d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6ad2ca011ad0533b4412ab52e9fd1cd2f029d6a3aca7411b2611c38f0e4556d", kill_on_drop: false }`
[INFO] [stdout] d6ad2ca011ad0533b4412ab52e9fd1cd2f029d6a3aca7411b2611c38f0e4556d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/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] 4733332c475e53d1ba049a2815765cb4aabde8f4cbab3c4cffa1a550b10df2a8
[INFO] running `Command { std: "docker" "start" "-a" "4733332c475e53d1ba049a2815765cb4aabde8f4cbab3c4cffa1a550b10df2a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling mer v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.41s
[INFO] running `Command { std: "docker" "inspect" "4733332c475e53d1ba049a2815765cb4aabde8f4cbab3c4cffa1a550b10df2a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4733332c475e53d1ba049a2815765cb4aabde8f4cbab3c4cffa1a550b10df2a8", kill_on_drop: false }`
[INFO] [stdout] 4733332c475e53d1ba049a2815765cb4aabde8f4cbab3c4cffa1a550b10df2a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/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] c87fa2ae6b9035a6db448cb0dadbf635654a46af5c474c9937b5917a388f6cb3
[INFO] running `Command { std: "docker" "start" "-a" "c87fa2ae6b9035a6db448cb0dadbf635654a46af5c474c9937b5917a388f6cb3", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.19s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mer-3435a56a9288548d)
[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] [stderr]    Doc-tests mer
[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" "c87fa2ae6b9035a6db448cb0dadbf635654a46af5c474c9937b5917a388f6cb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c87fa2ae6b9035a6db448cb0dadbf635654a46af5c474c9937b5917a388f6cb3", kill_on_drop: false }`
[INFO] [stdout] c87fa2ae6b9035a6db448cb0dadbf635654a46af5c474c9937b5917a388f6cb3