[INFO] updating cached repository jjcamp/linkgen
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jjcamp/linkgen
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jjcamp/linkgen" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/jjcamp/linkgen"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/jjcamp/linkgen'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jjcamp/linkgen" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/jjcamp/linkgen"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/jjcamp/linkgen'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 62b380a530193a7fada212537b67cd5a9ec33f20
[INFO] sha for GitHub repo jjcamp/linkgen: 62b380a530193a7fada212537b67cd5a9ec33f20
[INFO] validating manifest of jjcamp/linkgen on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of jjcamp/linkgen on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing jjcamp/linkgen
[INFO] finished frobbing jjcamp/linkgen
[INFO] frobbed toml for jjcamp/linkgen written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/jjcamp/linkgen/Cargo.toml
[INFO] started frobbing jjcamp/linkgen
[INFO] finished frobbing jjcamp/linkgen
[INFO] frobbed toml for jjcamp/linkgen written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/jjcamp/linkgen/Cargo.toml
[INFO] crate jjcamp/linkgen already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking jjcamp/linkgen against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-1/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/jjcamp/linkgen:/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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 44f1b78fa8cc180c9c64d1738d77bba1f4f920270ae3a7c70a1540592ce88f13
[INFO] running `"docker" "start" "-a" "44f1b78fa8cc180c9c64d1738d77bba1f4f920270ae3a7c70a1540592ce88f13"`
[INFO] [stderr]     Checking linkgen v0.3.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `exe`
[INFO] [stderr]   --> src/link.rs:31:15
[INFO] [stderr]    |
[INFO] [stderr] 31 | fn ext_helper(exe: &std::ffi::OsStr, alias: &str) -> String {
[INFO] [stderr]    |               ^^^ help: consider prefixing with an underscore: `_exe`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `verbose`
[INFO] [stderr]   --> src/open.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 29 | pub fn dir(verbose: bool) -> Result<(), Error> {
[INFO] [stderr]    |            ^^^^^^^ help: consider prefixing with an underscore: `_verbose`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exe`
[INFO] [stderr]   --> src/link.rs:31:15
[INFO] [stderr]    |
[INFO] [stderr] 31 | fn ext_helper(exe: &std::ffi::OsStr, alias: &str) -> String {
[INFO] [stderr]    |               ^^^ help: consider prefixing with an underscore: `_exe`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dir_with`
[INFO] [stderr]   --> src/open.rs:39:1
[INFO] [stderr]    |
[INFO] [stderr] 39 | fn dir_with(cmd: &str, verbose: bool) -> Result<(), Error> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] warning: unused variable: `verbose`
[INFO] [stderr]   --> src/open.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 29 | pub fn dir(verbose: bool) -> Result<(), Error> {
[INFO] [stderr]    |            ^^^^^^^ help: consider prefixing with an underscore: `_verbose`
[INFO] [stderr] 
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dir_with`
[INFO] [stderr]   --> src/open.rs:39:1
[INFO] [stderr]    |
[INFO] [stderr] 39 | fn dir_with(cmd: &str, verbose: bool) -> Result<(), Error> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `"docker" "inspect" "44f1b78fa8cc180c9c64d1738d77bba1f4f920270ae3a7c70a1540592ce88f13"`
[INFO] running `"docker" "rm" "-f" "44f1b78fa8cc180c9c64d1738d77bba1f4f920270ae3a7c70a1540592ce88f13"`
[INFO] [stdout] 44f1b78fa8cc180c9c64d1738d77bba1f4f920270ae3a7c70a1540592ce88f13