[INFO] updating cached repository Miniwoffer/char_count
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Miniwoffer/char_count
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Miniwoffer/char_count" "work/ex/pr-60444/sources/master#92b5e20ad59b183a2e6cd79423f54b8aa7ac9cbf/gh/Miniwoffer/char_count"`
[INFO] [stderr] Cloning into 'work/ex/pr-60444/sources/master#92b5e20ad59b183a2e6cd79423f54b8aa7ac9cbf/gh/Miniwoffer/char_count'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Miniwoffer/char_count" "work/ex/pr-60444/sources/try#cf8e5a06b289fbcdaf75ca55c057b2cb09fff33b/gh/Miniwoffer/char_count"`
[INFO] [stderr] Cloning into 'work/ex/pr-60444/sources/try#cf8e5a06b289fbcdaf75ca55c057b2cb09fff33b/gh/Miniwoffer/char_count'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 11fdfc45b5b6383f65e92ac8f94edc072350518e
[INFO] sha for GitHub repo Miniwoffer/char_count: 11fdfc45b5b6383f65e92ac8f94edc072350518e
[INFO] validating manifest of Miniwoffer/char_count on toolchain master#92b5e20ad59b183a2e6cd79423f54b8aa7ac9cbf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+92b5e20ad59b183a2e6cd79423f54b8aa7ac9cbf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Miniwoffer/char_count on toolchain try#cf8e5a06b289fbcdaf75ca55c057b2cb09fff33b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+cf8e5a06b289fbcdaf75ca55c057b2cb09fff33b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Miniwoffer/char_count
[INFO] finished frobbing Miniwoffer/char_count
[INFO] frobbed toml for Miniwoffer/char_count written to work/ex/pr-60444/sources/master#92b5e20ad59b183a2e6cd79423f54b8aa7ac9cbf/gh/Miniwoffer/char_count/Cargo.toml
[INFO] started frobbing Miniwoffer/char_count
[INFO] finished frobbing Miniwoffer/char_count
[INFO] frobbed toml for Miniwoffer/char_count written to work/ex/pr-60444/sources/try#cf8e5a06b289fbcdaf75ca55c057b2cb09fff33b/gh/Miniwoffer/char_count/Cargo.toml
[INFO] crate Miniwoffer/char_count already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+92b5e20ad59b183a2e6cd79423f54b8aa7ac9cbf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+cf8e5a06b289fbcdaf75ca55c057b2cb09fff33b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking Miniwoffer/char_count against try#cf8e5a06b289fbcdaf75ca55c057b2cb09fff33b for pr-60444
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60444/worker-4/try#cf8e5a06b289fbcdaf75ca55c057b2cb09fff33b:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60444/sources/try#cf8e5a06b289fbcdaf75ca55c057b2cb09fff33b/gh/Miniwoffer/char_count:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+cf8e5a06b289fbcdaf75ca55c057b2cb09fff33b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c2314d21229bc8b41ff1f42049fe5ccfad7f09950b7be3f6d5539d12c3227746
[INFO] running `"docker" "start" "-a" "c2314d21229bc8b41ff1f42049fe5ccfad7f09950b7be3f6d5539d12c3227746"`
[INFO] [stderr]     Checking char_count v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `ac`
[INFO] [stderr]   --> src/main.rs:13:35
[INFO] [stderr]    |
[INFO] [stderr] 13 |     sorted_vec.sort_unstable_by(|(ac,ai),(bc,bi)| bi.cmp(ai));
[INFO] [stderr]    |                                   ^^ help: consider prefixing with an underscore: `_ac`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bc`
[INFO] [stderr]   --> src/main.rs:13:43
[INFO] [stderr]    |
[INFO] [stderr] 13 |     sorted_vec.sort_unstable_by(|(ac,ai),(bc,bi)| bi.cmp(ai));
[INFO] [stderr]    |                                           ^^ help: consider prefixing with an underscore: `_bc`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     io::stdin().read_to_string(&mut buffer);
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ac`
[INFO] [stderr]   --> src/main.rs:13:35
[INFO] [stderr]    |
[INFO] [stderr] 13 |     sorted_vec.sort_unstable_by(|(ac,ai),(bc,bi)| bi.cmp(ai));
[INFO] [stderr]    |                                   ^^ help: consider prefixing with an underscore: `_ac`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bc`
[INFO] [stderr]   --> src/main.rs:13:43
[INFO] [stderr]    |
[INFO] [stderr] 13 |     sorted_vec.sort_unstable_by(|(ac,ai),(bc,bi)| bi.cmp(ai));
[INFO] [stderr]    |                                           ^^ help: consider prefixing with an underscore: `_bc`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     io::stdin().read_to_string(&mut buffer);
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `"docker" "inspect" "c2314d21229bc8b41ff1f42049fe5ccfad7f09950b7be3f6d5539d12c3227746"`
[INFO] running `"docker" "rm" "-f" "c2314d21229bc8b41ff1f42049fe5ccfad7f09950b7be3f6d5539d12c3227746"`
[INFO] [stdout] c2314d21229bc8b41ff1f42049fe5ccfad7f09950b7be3f6d5539d12c3227746