[INFO] cloning repository https://github.com/carols10cents/semver-trick-cargo-doc-problem
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/carols10cents/semver-trick-cargo-doc-problem" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarols10cents%2Fsemver-trick-cargo-doc-problem", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarols10cents%2Fsemver-trick-cargo-doc-problem'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ef97b9ae16a2d8e34d2f69cc5ca4f61b2497cd41
[INFO] testing carols10cents/semver-trick-cargo-doc-problem against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarols10cents%2Fsemver-trick-cargo-doc-problem" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/carols10cents/semver-trick-cargo-doc-problem on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/carols10cents/semver-trick-cargo-doc-problem
[INFO] finished tweaking git repo https://github.com/carols10cents/semver-trick-cargo-doc-problem
[INFO] tweaked toml for git repo https://github.com/carols10cents/semver-trick-cargo-doc-problem written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/carols10cents/semver-trick-cargo-doc-problem already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 25cd1e5d1537f6e1994ac168207c2c0e4b949e662b58d982d774a29564d0ecce
[INFO] running `Command { std: "docker" "start" "-a" "25cd1e5d1537f6e1994ac168207c2c0e4b949e662b58d982d774a29564d0ecce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "25cd1e5d1537f6e1994ac168207c2c0e4b949e662b58d982d774a29564d0ecce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25cd1e5d1537f6e1994ac168207c2c0e4b949e662b58d982d774a29564d0ecce", kill_on_drop: false }`
[INFO] [stdout] 25cd1e5d1537f6e1994ac168207c2c0e4b949e662b58d982d774a29564d0ecce
[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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f833d761897fe159f3d690882737adb089c002b5b4e324d59d37ccd1d62c5fa4
[INFO] running `Command { std: "docker" "start" "-a" "f833d761897fe159f3d690882737adb089c002b5b4e324d59d37ccd1d62c5fa4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling problem v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.21s
[INFO] running `Command { std: "docker" "inspect" "f833d761897fe159f3d690882737adb089c002b5b4e324d59d37ccd1d62c5fa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f833d761897fe159f3d690882737adb089c002b5b4e324d59d37ccd1d62c5fa4", kill_on_drop: false }`
[INFO] [stdout] f833d761897fe159f3d690882737adb089c002b5b4e324d59d37ccd1d62c5fa4
[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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec0a80ab67328524ac895fff1317c3d56a86c49c0c3c03ef373dc2657a9a255e
[INFO] running `Command { std: "docker" "start" "-a" "ec0a80ab67328524ac895fff1317c3d56a86c49c0c3c03ef373dc2657a9a255e", kill_on_drop: false }`
[INFO] [stderr]    Compiling problem v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "ec0a80ab67328524ac895fff1317c3d56a86c49c0c3c03ef373dc2657a9a255e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec0a80ab67328524ac895fff1317c3d56a86c49c0c3c03ef373dc2657a9a255e", kill_on_drop: false }`
[INFO] [stdout] ec0a80ab67328524ac895fff1317c3d56a86c49c0c3c03ef373dc2657a9a255e
[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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 60c802c68de9dadd1436ae5fdfe268ead76a2a83b22bdacb9fda198937a77902
[INFO] running `Command { std: "docker" "start" "-a" "60c802c68de9dadd1436ae5fdfe268ead76a2a83b22bdacb9fda198937a77902", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/problem-c701ceb73c7895bb)
[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" "60c802c68de9dadd1436ae5fdfe268ead76a2a83b22bdacb9fda198937a77902", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60c802c68de9dadd1436ae5fdfe268ead76a2a83b22bdacb9fda198937a77902", kill_on_drop: false }`
[INFO] [stdout] 60c802c68de9dadd1436ae5fdfe268ead76a2a83b22bdacb9fda198937a77902