[INFO] cloning repository https://github.com/yberreby/benchmarks
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yberreby/benchmarks" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyberreby%2Fbenchmarks"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyberreby%2Fbenchmarks'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2815509e178888da003eeab674c296fa9d17b791
[INFO] checking yberreby/benchmarks against master#b61e69433951e31f7bd746e22f516a48ad41623b for prs-64470-and-65389
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyberreby%2Fbenchmarks" "/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/yberreby/benchmarks on toolchain b61e69433951e31f7bd746e22f516a48ad41623b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/yberreby/benchmarks
[INFO] finished tweaking git repo https://github.com/yberreby/benchmarks
[INFO] tweaked toml for git repo https://github.com/yberreby/benchmarks written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/yberreby/benchmarks already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "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" "+b61e69433951e31f7bd746e22f516a48ad41623b" "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] 660fcc02e639a2cf25b70e8b2c16b0f7ba8ddd9dac91f4c70c21cd18893bb0a6
[INFO] running `"docker" "start" "-a" "660fcc02e639a2cf25b70e8b2c16b0f7ba8ddd9dac91f4c70c21cd18893bb0a6"`
[INFO] [stderr]     Checking libc v0.2.8
[INFO] [stderr]     Checking rand v0.3.14
[INFO] [stderr]     Checking chan v0.1.18
[INFO] [stderr]     Checking benchmarks v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> benches/bnned.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |         for i in 0..1_000_000 {
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0635]: unknown feature `str_char`
[INFO] [stderr]  --> benches/bnned.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(str_char)]
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0635`.
[INFO] [stderr] error: could not compile `benchmarks`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0635]: unknown feature `str_char`
[INFO] [stderr]  --> benches/char_at.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(str_char)]
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0635`.
[INFO] [stderr] error: could not compile `benchmarks`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "660fcc02e639a2cf25b70e8b2c16b0f7ba8ddd9dac91f4c70c21cd18893bb0a6"`
[INFO] running `"docker" "rm" "-f" "660fcc02e639a2cf25b70e8b2c16b0f7ba8ddd9dac91f4c70c21cd18893bb0a6"`
[INFO] [stdout] 660fcc02e639a2cf25b70e8b2c16b0f7ba8ddd9dac91f4c70c21cd18893bb0a6