[INFO] cloning repository https://github.com/sourcefrog/mbplox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sourcefrog/mbplox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsourcefrog%2Fmbplox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsourcefrog%2Fmbplox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e242d9f3b3c5ecebc1df017b733947f514588890
[INFO] checking sourcefrog/mbplox against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsourcefrog%2Fmbplox" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sourcefrog/mbplox on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sourcefrog/mbplox
[INFO] finished tweaking git repo https://github.com/sourcefrog/mbplox
[INFO] tweaked toml for git repo https://github.com/sourcefrog/mbplox written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/sourcefrog/mbplox already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded predicates-tree v1.0.4
[INFO] [stderr]   Downloaded termtree v0.2.1
[INFO] [stderr]   Downloaded argh v0.1.6
[INFO] [stderr]   Downloaded argh_shared v0.1.6
[INFO] [stderr]   Downloaded argh_derive v0.1.6
[INFO] [stderr]   Downloaded predicates v2.0.3
[INFO] [stderr]   Downloaded assert_cmd v2.0.2
[INFO] [stderr]   Downloaded syn v1.0.77
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a5e9a1d1986bf59d8b8f294e8e8ac979bbdd19b86ed3cde4279ffd5fc2f2b257
[INFO] running `Command { std: "docker" "start" "-a" "a5e9a1d1986bf59d8b8f294e8e8ac979bbdd19b86ed3cde4279ffd5fc2f2b257", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5e9a1d1986bf59d8b8f294e8e8ac979bbdd19b86ed3cde4279ffd5fc2f2b257", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5e9a1d1986bf59d8b8f294e8e8ac979bbdd19b86ed3cde4279ffd5fc2f2b257", kill_on_drop: false }`
[INFO] [stdout] a5e9a1d1986bf59d8b8f294e8e8ac979bbdd19b86ed3cde4279ffd5fc2f2b257
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] efd149f57c32d078999eb3fc045cd1fb539152905fe4cc404642b46dd38cebf0
[INFO] running `Command { std: "docker" "start" "-a" "efd149f57c32d078999eb3fc045cd1fb539152905fe4cc404642b46dd38cebf0", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling syn v1.0.77
[INFO] [stderr]    Compiling libc v0.2.103
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling anyhow v1.0.44
[INFO] [stderr]    Compiling argh_shared v0.1.6
[INFO] [stderr]     Checking predicates-core v1.0.2
[INFO] [stderr]     Checking termtree v0.2.1
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking pretty_assertions v1.0.0
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking predicates-tree v1.0.4
[INFO] [stderr]     Checking itertools v0.10.1
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking predicates v2.0.3
[INFO] [stderr]     Checking assert_cmd v2.0.2
[INFO] [stderr]    Compiling argh_derive v0.1.6
[INFO] [stderr]     Checking argh v0.1.6
[INFO] [stderr]     Checking mbplox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.45s
[INFO] running `Command { std: "docker" "inspect" "efd149f57c32d078999eb3fc045cd1fb539152905fe4cc404642b46dd38cebf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efd149f57c32d078999eb3fc045cd1fb539152905fe4cc404642b46dd38cebf0", kill_on_drop: false }`
[INFO] [stdout] efd149f57c32d078999eb3fc045cd1fb539152905fe4cc404642b46dd38cebf0