[INFO] cloning repository https://github.com/reujab/silver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/reujab/silver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freujab%2Fsilver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freujab%2Fsilver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e626035ca110bb64cb3be4ce62d739a25008657b
[INFO] checking reujab/silver against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freujab%2Fsilver" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/reujab/silver 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/reujab/silver
[INFO] finished tweaking git repo https://github.com/reujab/silver
[INFO] tweaked toml for git repo https://github.com/reujab/silver written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/reujab/silver 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 9ba3adba180a9f98332a70a3de317a9eadf9013baf6166c97abd32a83546ef40
[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" "9ba3adba180a9f98332a70a3de317a9eadf9013baf6166c97abd32a83546ef40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9ba3adba180a9f98332a70a3de317a9eadf9013baf6166c97abd32a83546ef40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ba3adba180a9f98332a70a3de317a9eadf9013baf6166c97abd32a83546ef40", kill_on_drop: false }`
[INFO] [stdout] 9ba3adba180a9f98332a70a3de317a9eadf9013baf6166c97abd32a83546ef40
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 8da815a81a253f9bd539693501b1e3186c3b1d076996dc005e1c1f3ecef7d34d
[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" "8da815a81a253f9bd539693501b1e3186c3b1d076996dc005e1c1f3ecef7d34d", kill_on_drop: false }`
[INFO] [stderr]    Compiling sysinfo v0.15.0
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking directories v2.0.2
[INFO] [stderr]    Compiling syn v1.0.37
[INFO] [stderr]     Checking users v0.10.0
[INFO] [stderr]     Checking dlv-list v0.2.2
[INFO] [stderr]     Checking chrono v0.4.13
[INFO] [stderr]     Checking git2 v0.13.8
[INFO] [stderr]     Checking ordered-multimap v0.2.4
[INFO] [stderr]     Checking rust-ini v0.15.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling structopt-derive v0.4.9
[INFO] [stderr]     Checking structopt v0.3.16
[INFO] [stderr]     Checking serde v1.0.114
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking humantime-serde v1.0.0
[INFO] [stderr]     Checking confy v0.4.0 (https://github.com/rust-cli/confy#baf2b401)
[INFO] [stderr]     Checking silver v1.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 47.44s
[INFO] running `Command { std: "docker" "inspect" "8da815a81a253f9bd539693501b1e3186c3b1d076996dc005e1c1f3ecef7d34d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8da815a81a253f9bd539693501b1e3186c3b1d076996dc005e1c1f3ecef7d34d", kill_on_drop: false }`
[INFO] [stdout] 8da815a81a253f9bd539693501b1e3186c3b1d076996dc005e1c1f3ecef7d34d