[INFO] cloning repository https://github.com/museun/brain
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/museun/brain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmuseun%2Fbrain"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmuseun%2Fbrain'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3697b11dc64c67fa4a2321b5224c8ff17094f02c
[INFO] checking museun/brain against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmuseun%2Fbrain" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/museun/brain 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/museun/brain
[INFO] finished tweaking git repo https://github.com/museun/brain
[INFO] tweaked toml for git repo https://github.com/museun/brain written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/museun/brain already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stdout] 7f683a1a37556325c55ed30ac46e74613efa05ff8fb2cc1f6ea2c546cd1165ff
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "7f683a1a37556325c55ed30ac46e74613efa05ff8fb2cc1f6ea2c546cd1165ff"`
[INFO] [stderr]     Checking bincode v1.0.1
[INFO] [stderr]     Checking hashbrown v0.1.7
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking tiny_http v0.6.0
[INFO] [stderr]     Checking brain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left_matches': superseded by `trim_start_matches`
[INFO] [stderr]   --> src/markov.rs:41:35
[INFO] [stderr]    |
[INFO] [stderr] 41 |             let start = &words[0].trim_left_matches(|c: char| !c.is_alphabetic());
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated item: `trim_start_matches`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left_matches': superseded by `trim_start_matches`
[INFO] [stderr]   --> src/markov.rs:41:35
[INFO] [stderr]    |
[INFO] [stderr] 41 |             let start = &words[0].trim_left_matches(|c: char| !c.is_alphabetic());
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated item: `trim_start_matches`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.41s
[INFO] running `"docker" "inspect" "7f683a1a37556325c55ed30ac46e74613efa05ff8fb2cc1f6ea2c546cd1165ff"`
[INFO] running `"docker" "rm" "-f" "7f683a1a37556325c55ed30ac46e74613efa05ff8fb2cc1f6ea2c546cd1165ff"`
[INFO] [stdout] 7f683a1a37556325c55ed30ac46e74613efa05ff8fb2cc1f6ea2c546cd1165ff