[INFO] cloning repository https://github.com/rcook/rust-expr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rcook/rust-expr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frcook%2Frust-expr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frcook%2Frust-expr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 386713d3f24daa9ec543e75e4be9459946cf3254
[INFO] checking rcook/rust-expr against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frcook%2Frust-expr" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rcook/rust-expr on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rcook/rust-expr
[INFO] finished tweaking git repo https://github.com/rcook/rust-expr
[INFO] tweaked toml for git repo https://github.com/rcook/rust-expr written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/rcook/rust-expr already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "metadata" "--no-deps" "--format-version=1", 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] 4f4f796a71b65f9d78a9c469fc863c791b31126a5bc09f6f8277906d0e0b94b9
[INFO] running `Command { std: "docker" "start" "-a" "4f4f796a71b65f9d78a9c469fc863c791b31126a5bc09f6f8277906d0e0b94b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f4f796a71b65f9d78a9c469fc863c791b31126a5bc09f6f8277906d0e0b94b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f4f796a71b65f9d78a9c469fc863c791b31126a5bc09f6f8277906d0e0b94b9", kill_on_drop: false }`
[INFO] [stdout] 4f4f796a71b65f9d78a9c469fc863c791b31126a5bc09f6f8277906d0e0b94b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ad0eb58e9de190c015a4fe6bf5838d0e76e8adf49dc7cd78342060eb7ff9a9f6
[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" "ad0eb58e9de190c015a4fe6bf5838d0e76e8adf49dc7cd78342060eb7ff9a9f6", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-expr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "ad0eb58e9de190c015a4fe6bf5838d0e76e8adf49dc7cd78342060eb7ff9a9f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad0eb58e9de190c015a4fe6bf5838d0e76e8adf49dc7cd78342060eb7ff9a9f6", kill_on_drop: false }`
[INFO] [stdout] ad0eb58e9de190c015a4fe6bf5838d0e76e8adf49dc7cd78342060eb7ff9a9f6