[INFO] cloning repository https://github.com/Confirm4Crit/RustBookWalkthrough
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Confirm4Crit/RustBookWalkthrough" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FConfirm4Crit%2FRustBookWalkthrough", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FConfirm4Crit%2FRustBookWalkthrough'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 524f97b840d0f9d9406848984210bd0d9c458f56
[INFO] checking Confirm4Crit/RustBookWalkthrough against try#575650af7d7ca88602df28e39d27bf3e456c306e for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FConfirm4Crit%2FRustBookWalkthrough" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Confirm4Crit/RustBookWalkthrough on toolchain 575650af7d7ca88602df28e39d27bf3e456c306e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Confirm4Crit/RustBookWalkthrough
[INFO] finished tweaking git repo https://github.com/Confirm4Crit/RustBookWalkthrough
[INFO] tweaked toml for git repo https://github.com/Confirm4Crit/RustBookWalkthrough written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Confirm4Crit/RustBookWalkthrough already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cb78a22c2c4a5707364a8e0d0e659872968d9ad47e7b910ada06b95d83f70ab5
[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" "cb78a22c2c4a5707364a8e0d0e659872968d9ad47e7b910ada06b95d83f70ab5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb78a22c2c4a5707364a8e0d0e659872968d9ad47e7b910ada06b95d83f70ab5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb78a22c2c4a5707364a8e0d0e659872968d9ad47e7b910ada06b95d83f70ab5", kill_on_drop: false }`
[INFO] [stdout] cb78a22c2c4a5707364a8e0d0e659872968d9ad47e7b910ada06b95d83f70ab5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ef07fa7cd432370f3ed563299cbce55778379d7a9558ad6d4c62465d0718984
[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" "0ef07fa7cd432370f3ed563299cbce55778379d7a9558ad6d4c62465d0718984", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking RustBookWalkthrough v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: crate `RustBookWalkthrough` 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: `rust_book_walkthrough`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `RustBookWalkthrough` 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: `rust_book_walkthrough`
[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 0.22s
[INFO] running `Command { std: "docker" "inspect" "0ef07fa7cd432370f3ed563299cbce55778379d7a9558ad6d4c62465d0718984", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ef07fa7cd432370f3ed563299cbce55778379d7a9558ad6d4c62465d0718984", kill_on_drop: false }`
[INFO] [stdout] 0ef07fa7cd432370f3ed563299cbce55778379d7a9558ad6d4c62465d0718984