[INFO] crate mono_display 0.1.0 is already in cache
[INFO] checking mono_display-0.1.0 against try#8a5e87609850cdd8679aada01eb0f3062f254ca8 for pr-71140
[INFO] extracting crate mono_display 0.1.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate mono_display 0.1.0 on toolchain 8a5e87609850cdd8679aada01eb0f3062f254ca8
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a5e87609850cdd8679aada01eb0f3062f254ca8" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate mono_display 0.1.0
[INFO] finished tweaking crates.io crate mono_display 0.1.0
[INFO] tweaked toml for crates.io crate mono_display 0.1.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a5e87609850cdd8679aada01eb0f3062f254ca8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a5e87609850cdd8679aada01eb0f3062f254ca8" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+8a5e87609850cdd8679aada01eb0f3062f254ca8" "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] 9cdbec6d5c3c2d8269df7397da67f8ea9e9d990111f30d79fc479a195bfd4449
[INFO] running `"docker" "start" "-a" "9cdbec6d5c3c2d8269df7397da67f8ea9e9d990111f30d79fc479a195bfd4449"`
[INFO] [stderr]    Compiling font-rs v0.1.3
[INFO] [stderr]     Checking rppal v0.7.1
[INFO] [stderr]     Checking bdf v0.5.5
[INFO] [stderr]     Checking mono_display v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/ssd1306.rs:188:21
[INFO] [stderr]     |
[INFO] [stderr] 188 |                 let mut end = pos + find_span_end(&old[pos..], &new[pos..]);
[INFO] [stderr]     |                     ----^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/ssd1306.rs:188:21
[INFO] [stderr]     |
[INFO] [stderr] 188 |                 let mut end = pos + find_span_end(&old[pos..], &new[pos..]);
[INFO] [stderr]     |                     ----^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.77s
[INFO] running `"docker" "inspect" "9cdbec6d5c3c2d8269df7397da67f8ea9e9d990111f30d79fc479a195bfd4449"`
[INFO] running `"docker" "rm" "-f" "9cdbec6d5c3c2d8269df7397da67f8ea9e9d990111f30d79fc479a195bfd4449"`
[INFO] [stdout] 9cdbec6d5c3c2d8269df7397da67f8ea9e9d990111f30d79fc479a195bfd4449