[INFO] updating cached repository mitchhentges/lcov-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mitchhentges/lcov-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mitchhentges/lcov-rs" "work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/mitchhentges/lcov-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/mitchhentges/lcov-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mitchhentges/lcov-rs" "work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/mitchhentges/lcov-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/mitchhentges/lcov-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 91156db347a6c35ecfb789db8672f1d0baae9df2
[INFO] sha for GitHub repo mitchhentges/lcov-rs: 91156db347a6c35ecfb789db8672f1d0baae9df2
[INFO] validating manifest of mitchhentges/lcov-rs 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 mitchhentges/lcov-rs 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 mitchhentges/lcov-rs
[INFO] finished frobbing mitchhentges/lcov-rs
[INFO] frobbed toml for mitchhentges/lcov-rs written to work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/mitchhentges/lcov-rs/Cargo.toml
[INFO] started frobbing mitchhentges/lcov-rs
[INFO] finished frobbing mitchhentges/lcov-rs
[INFO] frobbed toml for mitchhentges/lcov-rs written to work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/mitchhentges/lcov-rs/Cargo.toml
[INFO] crate mitchhentges/lcov-rs 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking mitchhentges/lcov-rs against master#5f9c0448dde167128d668da4555879f64e56af1d for pr-62133
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62133/worker-1/master#5f9c0448dde167128d668da4555879f64e56af1d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/mitchhentges/lcov-rs:/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] 1459a67e3ad1a9a1b09395340b667189d57416961bf060586c38341b140a801e
[INFO] running `"docker" "start" "-a" "1459a67e3ad1a9a1b09395340b667189d57416961bf060586c38341b140a801e"`
[INFO] [stderr]     Checking itertools v0.5.10
[INFO] [stderr]     Checking lcov-rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `tmp_output_path`
[INFO] [stderr]    --> src/main.rs:148:31
[INFO] [stderr]     |
[INFO] [stderr] 148 | fn read_gcda(gcda_path: &str, tmp_output_path: &str) {
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_tmp_output_path`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `ARC_ON_TREE`
[INFO] [stderr]   --> src/main.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | const ARC_ON_TREE: u32 = 1 << 0;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_on_tree`
[INFO] [stderr]    --> src/main.rs:412:5
[INFO] [stderr]     |
[INFO] [stderr] 412 |     fn is_on_tree(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tmp_output_path`
[INFO] [stderr]    --> src/main.rs:148:31
[INFO] [stderr]     |
[INFO] [stderr] 148 | fn read_gcda(gcda_path: &str, tmp_output_path: &str) {
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_tmp_output_path`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `ARC_ON_TREE`
[INFO] [stderr]   --> src/main.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | const ARC_ON_TREE: u32 = 1 << 0;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_on_tree`
[INFO] [stderr]    --> src/main.rs:412:5
[INFO] [stderr]     |
[INFO] [stderr] 412 |     fn is_on_tree(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.01s
[INFO] running `"docker" "inspect" "1459a67e3ad1a9a1b09395340b667189d57416961bf060586c38341b140a801e"`
[INFO] running `"docker" "rm" "-f" "1459a67e3ad1a9a1b09395340b667189d57416961bf060586c38341b140a801e"`
[INFO] [stdout] 1459a67e3ad1a9a1b09395340b667189d57416961bf060586c38341b140a801e