[INFO] updating cached repository https://github.com/UtorLin/Rust-Exercise-
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8b93e031f258c5e9312368606e028408e9ef7ced
[INFO] checking UtorLin/Rust-Exercise- against master#c724b67e1b474262917a5154d74e7072267593fe for pr-74315
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FUtorLin%2FRust-Exercise-" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/UtorLin/Rust-Exercise- on toolchain c724b67e1b474262917a5154d74e7072267593fe
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/UtorLin/Rust-Exercise-
[INFO] finished tweaking git repo https://github.com/UtorLin/Rust-Exercise-
[INFO] tweaked toml for git repo https://github.com/UtorLin/Rust-Exercise- written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/UtorLin/Rust-Exercise- already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "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] 445e1766802fb38e9b6c2a56d95e7f62942d93ba6a3d59d16b31f3e12d88c61d
[INFO] running `Command { std: "docker" "start" "-a" "445e1766802fb38e9b6c2a56d95e7f62942d93ba6a3d59d16b31f3e12d88c61d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "445e1766802fb38e9b6c2a56d95e7f62942d93ba6a3d59d16b31f3e12d88c61d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "445e1766802fb38e9b6c2a56d95e7f62942d93ba6a3d59d16b31f3e12d88c61d", kill_on_drop: false }`
[INFO] [stdout] 445e1766802fb38e9b6c2a56d95e7f62942d93ba6a3d59d16b31f3e12d88c61d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 741c202702c03e338d754cf6fb172fc8e33d65d028761a70bb594f13de49733f
[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" "741c202702c03e338d754cf6fb172fc8e33d65d028761a70bb594f13de49733f", kill_on_drop: false }`
[INFO] [stderr]     Checking secondProject v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: crate `secondProject` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `second_project`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `secondProject` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `second_project`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "741c202702c03e338d754cf6fb172fc8e33d65d028761a70bb594f13de49733f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "741c202702c03e338d754cf6fb172fc8e33d65d028761a70bb594f13de49733f", kill_on_drop: false }`
[INFO] [stdout] 741c202702c03e338d754cf6fb172fc8e33d65d028761a70bb594f13de49733f