[INFO] updating cached repository https://github.com/lfitchett/learningRust
[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] d6e7135aff9ec99cd247b8360246d9df8dfa7540
[INFO] checking lfitchett/learningRust against master#30ca215b4e38b32aa7abdd635c5e2d56f5724494 for pr-66037
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flfitchett%2FlearningRust" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lfitchett/learningRust on toolchain 30ca215b4e38b32aa7abdd635c5e2d56f5724494
[INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/lfitchett/learningRust
[INFO] finished tweaking git repo https://github.com/lfitchett/learningRust
[INFO] tweaked toml for git repo https://github.com/lfitchett/learningRust written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/lfitchett/learningRust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "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] 29635fd33e381eee8b7a708517238ba2639046d236295b14981d2b45932d6bbe
[INFO] running `"docker" "start" "-a" "29635fd33e381eee8b7a708517238ba2639046d236295b14981d2b45932d6bbe"`
[INFO] [stderr]    Compiling sysinfo v0.9.6
[INFO] [stderr]    Compiling num-bigint v0.2.3
[INFO] [stderr]     Checking num-integer v0.1.41
[INFO] [stderr]     Checking uptime_lib v0.1.0
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking num-iter v0.1.39
[INFO] [stderr]     Checking chrono v0.4.7
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking rayon-core v1.6.0
[INFO] [stderr]     Checking rayon v1.2.0
[INFO] [stderr]     Checking num-rational v0.2.2
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking parse_duration v2.0.1
[INFO] [stderr]     Checking playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/advent/file.rs:14:65
[INFO] [stderr]    |
[INFO] [stderr] 14 |         Err(why) => panic!("couldn't open {}: {}", display, why.description()),
[INFO] [stderr]    |                                                                 ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/advent/file.rs:21:65
[INFO] [stderr]    |
[INFO] [stderr] 21 |         Err(why) => panic!("couldn't read {}: {}", display, why.description()),
[INFO] [stderr]    |                                                                 ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/advent/file.rs:14:65
[INFO] [stderr]    |
[INFO] [stderr] 14 |         Err(why) => panic!("couldn't open {}: {}", display, why.description()),
[INFO] [stderr]    |                                                                 ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/advent/file.rs:21:65
[INFO] [stderr]    |
[INFO] [stderr] 21 |         Err(why) => panic!("couldn't read {}: {}", display, why.description()),
[INFO] [stderr]    |                                                                 ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.98s
[INFO] running `"docker" "inspect" "29635fd33e381eee8b7a708517238ba2639046d236295b14981d2b45932d6bbe"`
[INFO] running `"docker" "rm" "-f" "29635fd33e381eee8b7a708517238ba2639046d236295b14981d2b45932d6bbe"`
[INFO] [stdout] 29635fd33e381eee8b7a708517238ba2639046d236295b14981d2b45932d6bbe