[INFO] cloning repository za-rudeboy/rust_excercise
[INFO] running `"git" "clone" "--bare" "git://github.com/za-rudeboy/rust_excercise.git" "work/cache/sources/gh/za-rudeboy/rust_excercise"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/za-rudeboy/rust_excercise'...
[INFO] running `"git" "clone" "work/cache/sources/gh/za-rudeboy/rust_excercise" "work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/za-rudeboy/rust_excercise"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/za-rudeboy/rust_excercise'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/za-rudeboy/rust_excercise" "work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/za-rudeboy/rust_excercise"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/za-rudeboy/rust_excercise'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0e5aa891424f9ede181c4d2a0ddc7ac5b384c501
[INFO] sha for GitHub repo za-rudeboy/rust_excercise: 0e5aa891424f9ede181c4d2a0ddc7ac5b384c501
[INFO] validating manifest of za-rudeboy/rust_excercise on toolchain master#5f9c0448dde167128d668da4555879f64e56af1d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of za-rudeboy/rust_excercise on toolchain try#8ec8125bea94852768b56958f05da47666c21ab0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing za-rudeboy/rust_excercise
[INFO] finished frobbing za-rudeboy/rust_excercise
[INFO] frobbed toml for za-rudeboy/rust_excercise written to work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/za-rudeboy/rust_excercise/Cargo.toml
[INFO] started frobbing za-rudeboy/rust_excercise
[INFO] finished frobbing za-rudeboy/rust_excercise
[INFO] frobbed toml for za-rudeboy/rust_excercise written to work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/za-rudeboy/rust_excercise/Cargo.toml
[INFO] crate za-rudeboy/rust_excercise already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking za-rudeboy/rust_excercise against master#5f9c0448dde167128d668da4555879f64e56af1d for pr-62133
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62133/worker-4/master#5f9c0448dde167128d668da4555879f64e56af1d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/za-rudeboy/rust_excercise:/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" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 31a377c16403575b2f5c09e6ecd03507caa928a1cf65908e7e7b37475daca1e5
[INFO] running `"docker" "start" "-a" "31a377c16403575b2f5c09e6ecd03507caa928a1cf65908e7e7b37475daca1e5"`
[INFO] [stderr]     Checking exercise v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `second`
[INFO] [stderr]   --> src/main.rs:21:37
[INFO] [stderr]    |
[INFO] [stderr] 21 | fn simple_calculator(first: String, second: String) {
[INFO] [stderr]    |                                     ^^^^^^ help: consider prefixing with an underscore: `_second`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `count_characters`
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn count_characters(s: String) {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_quotes`
[INFO] [stderr]  --> src/main.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn print_quotes(quote: String) {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `madlib`
[INFO] [stderr]   --> src/main.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn madlib(noun: String, verb: String, adjective: String, adverb: String) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `simple_calculator`
[INFO] [stderr]   --> src/main.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | fn simple_calculator(first: String, second: String) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `second`
[INFO] [stderr]   --> src/main.rs:21:37
[INFO] [stderr]    |
[INFO] [stderr] 21 | fn simple_calculator(first: String, second: String) {
[INFO] [stderr]    |                                     ^^^^^^ help: consider prefixing with an underscore: `_second`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `"docker" "inspect" "31a377c16403575b2f5c09e6ecd03507caa928a1cf65908e7e7b37475daca1e5"`
[INFO] running `"docker" "rm" "-f" "31a377c16403575b2f5c09e6ecd03507caa928a1cf65908e7e7b37475daca1e5"`
[INFO] [stdout] 31a377c16403575b2f5c09e6ecd03507caa928a1cf65908e7e7b37475daca1e5