[INFO] cloning repository https://github.com/Wikiko/rust-learn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Wikiko/rust-learn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWikiko%2Frust-learn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWikiko%2Frust-learn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fbf9d0da108b20d5df651fb78cd0030b64213b67
[INFO] checking Wikiko/rust-learn against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWikiko%2Frust-learn" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Wikiko/rust-learn 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/Wikiko/rust-learn
[INFO] finished tweaking git repo https://github.com/Wikiko/rust-learn
[INFO] tweaked toml for git repo https://github.com/Wikiko/rust-learn written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/Wikiko/rust-learn 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 4e81d1b19132c5f1c3a3a9e71c0d27e2d39ec7f3a1192edb72cb87b0b6cd859e
[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" "4e81d1b19132c5f1c3a3a9e71c0d27e2d39ec7f3a1192edb72cb87b0b6cd859e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e81d1b19132c5f1c3a3a9e71c0d27e2d39ec7f3a1192edb72cb87b0b6cd859e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e81d1b19132c5f1c3a3a9e71c0d27e2d39ec7f3a1192edb72cb87b0b6cd859e", kill_on_drop: false }`
[INFO] [stdout] 4e81d1b19132c5f1c3a3a9e71c0d27e2d39ec7f3a1192edb72cb87b0b6cd859e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 696ef0c5e109594c04255b142bdb492a72c72d384c5c1dd4cf4d0267207b5382
[INFO] running `Command { std: "docker" "start" "-a" "696ef0c5e109594c04255b142bdb492a72c72d384c5c1dd4cf4d0267207b5382", kill_on_drop: false }`
[INFO] [stderr]     Checking collections v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `Command { std: "docker" "inspect" "696ef0c5e109594c04255b142bdb492a72c72d384c5c1dd4cf4d0267207b5382", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "696ef0c5e109594c04255b142bdb492a72c72d384c5c1dd4cf4d0267207b5382", kill_on_drop: false }`
[INFO] [stdout] 696ef0c5e109594c04255b142bdb492a72c72d384c5c1dd4cf4d0267207b5382