[INFO] updating cached repository https://github.com/ryanpbrewster/ford-johnson
[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] 5a1a60724aab3ec874700f24386e96c2eec31488
[INFO] checking ryanpbrewster/ford-johnson against try#f149601db42efe10ece8b284ab681fd4a6fcb89c for pr-68766
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryanpbrewster%2Fford-johnson" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ryanpbrewster/ford-johnson on toolchain f149601db42efe10ece8b284ab681fd4a6fcb89c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ryanpbrewster/ford-johnson
[INFO] finished tweaking git repo https://github.com/ryanpbrewster/ford-johnson
[INFO] tweaked toml for git repo https://github.com/ryanpbrewster/ford-johnson written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/ryanpbrewster/ford-johnson already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "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" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "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] 2dd5138d2fbde5c6503b41c845ca4ab365ddb47423b79dc9850f31d1747e4da8
[INFO] running `"docker" "start" "-a" "2dd5138d2fbde5c6503b41c845ca4ab365ddb47423b79dc9850f31d1747e4da8"`
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]     Checking ford-johnson v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking bstr v0.2.9
[INFO] [stderr]     Checking tinytemplate v1.0.3
[INFO] [stderr]     Checking rand_xoshiro v0.3.1
[INFO] [stderr]     Checking rand_os v0.2.2
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking criterion-plot v0.4.0
[INFO] [stderr]     Checking csv v1.1.2
[INFO] [stderr]     Checking regex v1.3.3
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking quickcheck v0.9.1
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling quickcheck_macros v0.9.1
[INFO] [stderr]     Checking criterion v0.3.0
[INFO] [stderr] warning: unused import: `black_box`
[INFO] [stderr]  --> benches/sort_benchmark.rs:1:17
[INFO] [stderr]   |
[INFO] [stderr] 1 | use criterion::{black_box, criterion_group, criterion_main, Criterion};
[INFO] [stderr]   |                 ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 55.75s
[INFO] running `"docker" "inspect" "2dd5138d2fbde5c6503b41c845ca4ab365ddb47423b79dc9850f31d1747e4da8"`
[INFO] running `"docker" "rm" "-f" "2dd5138d2fbde5c6503b41c845ca4ab365ddb47423b79dc9850f31d1747e4da8"`
[INFO] [stdout] 2dd5138d2fbde5c6503b41c845ca4ab365ddb47423b79dc9850f31d1747e4da8