[INFO] crate mono_display 0.1.0 is already in cache
[INFO] testing mono_display-0.1.0 against 1.38.0 for beta-1.39-1
[INFO] extracting crate mono_display 0.1.0 into work/builds/worker-4/source
[INFO] validating manifest of crates.io crate mono_display 0.1.0 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "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 work/builds/worker-4/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 1a2a2c2c5cfc4baf37e9f8500a7dda54e43fba99b4423c4e7e8540f65924da84
[INFO] running `"docker" "start" "-a" "1a2a2c2c5cfc4baf37e9f8500a7dda54e43fba99b4423c4e7e8540f65924da84"`
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]    Compiling bit-vec v0.6.1
[INFO] [stderr]    Compiling rppal v0.7.1
[INFO] [stderr]    Compiling bit-set v0.3.0
[INFO] [stderr]    Compiling bdf v0.5.5
[INFO] [stderr]    Compiling font-rs v0.1.3
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 2.65s
[INFO] running `"docker" "inspect" "1a2a2c2c5cfc4baf37e9f8500a7dda54e43fba99b4423c4e7e8540f65924da84"`
[INFO] running `"docker" "rm" "-f" "1a2a2c2c5cfc4baf37e9f8500a7dda54e43fba99b4423c4e7e8540f65924da84"`
[INFO] [stdout] 1a2a2c2c5cfc4baf37e9f8500a7dda54e43fba99b4423c4e7e8540f65924da84
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 80d62caebe8e8f6d5a1500dfd44a3e4b3e5d699918521cfce25713cf2ef20653
[INFO] running `"docker" "start" "-a" "80d62caebe8e8f6d5a1500dfd44a3e4b3e5d699918521cfce25713cf2ef20653"`
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `"docker" "inspect" "80d62caebe8e8f6d5a1500dfd44a3e4b3e5d699918521cfce25713cf2ef20653"`
[INFO] running `"docker" "rm" "-f" "80d62caebe8e8f6d5a1500dfd44a3e4b3e5d699918521cfce25713cf2ef20653"`
[INFO] [stdout] 80d62caebe8e8f6d5a1500dfd44a3e4b3e5d699918521cfce25713cf2ef20653
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] aaeea974a80bbf02eac409b2a99e10ee98d06e9a1090df37fbf27f2a139f30db
[INFO] running `"docker" "start" "-a" "aaeea974a80bbf02eac409b2a99e10ee98d06e9a1090df37fbf27f2a139f30db"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mono_display-d7ba37c3c48d30a9
[INFO] [stderr]    Doc-tests mono_display
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "aaeea974a80bbf02eac409b2a99e10ee98d06e9a1090df37fbf27f2a139f30db"`
[INFO] running `"docker" "rm" "-f" "aaeea974a80bbf02eac409b2a99e10ee98d06e9a1090df37fbf27f2a139f30db"`
[INFO] [stdout] aaeea974a80bbf02eac409b2a99e10ee98d06e9a1090df37fbf27f2a139f30db