[INFO] updating cached repository https://github.com/jiegec/classroom-helper
[INFO] running `"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"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8ec66eee6d2994ca6f690d567938c98f9fa5da19
[INFO] checking jiegec/classroom-helper against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjiegec%2Fclassroom-helper" "/workspace/builds/worker-8/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jiegec/classroom-helper on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/jiegec/classroom-helper
[INFO] finished tweaking git repo https://github.com/jiegec/classroom-helper
[INFO] tweaked toml for git repo https://github.com/jiegec/classroom-helper written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/jiegec/classroom-helper already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] efbfc8e05fadb007d2548668eeae2ea2fd787a4b10c158d91f445e7477d1b393
[INFO] running `"docker" "start" "-a" "efbfc8e05fadb007d2548668eeae2ea2fd787a4b10c158d91f445e7477d1b393"`
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking cassowary v0.3.0
[INFO] [stderr]     Checking fs_extra v1.1.0
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking regex-automata v0.1.7
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking termion v1.5.3
[INFO] [stderr]     Checking tui v0.5.1
[INFO] [stderr]     Checking aho-corasick v0.7.4
[INFO] [stderr]     Checking nom v4.2.3
[INFO] [stderr]     Checking bstr v0.2.1
[INFO] [stderr]     Checking csv-core v0.1.6
[INFO] [stderr]     Checking regex v1.1.7
[INFO] [stderr]     Checking csv v1.1.1
[INFO] [stderr]     Checking serde-hjson v0.8.2
[INFO] [stderr]     Checking config v0.9.3
[INFO] [stderr]     Checking classroom-helper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.48s
[INFO] running `"docker" "inspect" "efbfc8e05fadb007d2548668eeae2ea2fd787a4b10c158d91f445e7477d1b393"`
[INFO] running `"docker" "rm" "-f" "efbfc8e05fadb007d2548668eeae2ea2fd787a4b10c158d91f445e7477d1b393"`
[INFO] [stdout] efbfc8e05fadb007d2548668eeae2ea2fd787a4b10c158d91f445e7477d1b393