[INFO] updating cached repository https://github.com/livioribeiro/cargo-readme
[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] 11ce95834c5ef52922174a22cd91e9d1868cf3d4
[INFO] checking livioribeiro/cargo-readme against try#d93021f5faa26e4f9d2719e79f9974e06aa40e17 for pr-71873
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flivioribeiro%2Fcargo-readme" "/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/livioribeiro/cargo-readme on toolchain d93021f5faa26e4f9d2719e79f9974e06aa40e17
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d93021f5faa26e4f9d2719e79f9974e06aa40e17" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/livioribeiro/cargo-readme
[INFO] finished tweaking git repo https://github.com/livioribeiro/cargo-readme
[INFO] tweaked toml for git repo https://github.com/livioribeiro/cargo-readme written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/livioribeiro/cargo-readme already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d93021f5faa26e4f9d2719e79f9974e06aa40e17" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[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" "+d93021f5faa26e4f9d2719e79f9974e06aa40e17" "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] 1f8d595bc38f44b3b78923aac5035cda90df54cb1fb71510cf4e029ea80054a3
[INFO] running `"docker" "start" "-a" "1f8d595bc38f44b3b78923aac5035cda90df54cb1fb71510cf4e029ea80054a3"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking environment v0.1.1
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking regex v1.3.6
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking serde_json v1.0.50
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling backtrace-sys v0.1.35
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking backtrace v0.3.46
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling serde_derive v1.0.105
[INFO] [stderr]    Compiling failure_derive v0.1.7
[INFO] [stderr]     Checking failure v0.1.7
[INFO] [stderr]     Checking assert_cli v0.6.3
[INFO] [stderr]     Checking cargo-readme v3.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused return value of `std::string::String::<A>::split_off` that must be used
[INFO] [stderr]   --> src/readme/extract.rs:64:17
[INFO] [stderr]    |
[INFO] [stderr] 64 |                 line.split_off(pos);
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: use `.truncate()` if you don't need the other half
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::string::String::<A>::split_off` that must be used
[INFO] [stderr]   --> src/readme/extract.rs:64:17
[INFO] [stderr]    |
[INFO] [stderr] 64 |                 line.split_off(pos);
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: use `.truncate()` if you don't need the other half
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 46.27s
[INFO] running `"docker" "inspect" "1f8d595bc38f44b3b78923aac5035cda90df54cb1fb71510cf4e029ea80054a3"`
[INFO] running `"docker" "rm" "-f" "1f8d595bc38f44b3b78923aac5035cda90df54cb1fb71510cf4e029ea80054a3"`
[INFO] [stdout] 1f8d595bc38f44b3b78923aac5035cda90df54cb1fb71510cf4e029ea80054a3