[INFO] cloning repository https://github.com/mikeyhew/scotland-yard
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mikeyhew/scotland-yard" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmikeyhew%2Fscotland-yard", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmikeyhew%2Fscotland-yard'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b05bf0e997af06dd53d8db107ba80476e691f141
[INFO] checking mikeyhew/scotland-yard against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmikeyhew%2Fscotland-yard" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mikeyhew/scotland-yard on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mikeyhew/scotland-yard
[INFO] finished tweaking git repo https://github.com/mikeyhew/scotland-yard
[INFO] tweaked toml for git repo https://github.com/mikeyhew/scotland-yard written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/mikeyhew/scotland-yard already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4459899eb4d68b5800ab387c4bba3eefce3d1adfd0da1e65c2d2a1fac29cf4c8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4459899eb4d68b5800ab387c4bba3eefce3d1adfd0da1e65c2d2a1fac29cf4c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4459899eb4d68b5800ab387c4bba3eefce3d1adfd0da1e65c2d2a1fac29cf4c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4459899eb4d68b5800ab387c4bba3eefce3d1adfd0da1e65c2d2a1fac29cf4c8", kill_on_drop: false }`
[INFO] [stdout] 4459899eb4d68b5800ab387c4bba3eefce3d1adfd0da1e65c2d2a1fac29cf4c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 04f6ae9ed2ec5be819976dcd9ac1e1f8a91feafa57c549a97b94bff4c5ee9db9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "04f6ae9ed2ec5be819976dcd9ac1e1f8a91feafa57c549a97b94bff4c5ee9db9", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.42
[INFO] [stderr]    Compiling cc v1.0.38
[INFO] [stderr]    Compiling serde v1.0.98
[INFO] [stderr]    Compiling ucd-util v0.1.5
[INFO] [stderr]     Checking rustc-demangle v0.1.15
[INFO] [stderr]    Compiling utf8-ranges v1.0.3
[INFO] [stderr]     Checking unicode-segmentation v1.3.0
[INFO] [stderr]     Checking joinery v2.0.0
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]     Checking regex-syntax v0.6.10
[INFO] [stderr]     Checking aho-corasick v0.7.4
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking generic-array v0.13.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]     Checking backtrace v0.3.34
[INFO] [stderr]     Checking regex v1.2.0
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling serde_derive v1.0.98
[INFO] [stderr]     Checking rustyline v5.0.1
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]    Compiling derive_more v0.15.0
[INFO] [stderr]     Checking scotland-yard v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 50.57s
[INFO] running `Command { std: "docker" "inspect" "04f6ae9ed2ec5be819976dcd9ac1e1f8a91feafa57c549a97b94bff4c5ee9db9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04f6ae9ed2ec5be819976dcd9ac1e1f8a91feafa57c549a97b94bff4c5ee9db9", kill_on_drop: false }`
[INFO] [stdout] 04f6ae9ed2ec5be819976dcd9ac1e1f8a91feafa57c549a97b94bff4c5ee9db9