[INFO] cloning repository https://github.com/facebook/dotslash
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/facebook/dotslash" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffacebook%2Fdotslash", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffacebook%2Fdotslash'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 95b8e7d5278191b988cb45ea9e384aa5121f5730
[INFO] checking facebook/dotslash/95b8e7d5278191b988cb45ea9e384aa5121f5730 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffacebook%2Fdotslash" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/facebook/dotslash
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/facebook/dotslash
[INFO] tweaked toml for git repo https://github.com/facebook/dotslash written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/facebook/dotslash on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/facebook/dotslash already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f2a1fd837203102ff8aa82be747bcfde4c5d350831214db1b94b3dff2f7312fc
[INFO] running `Command { std: "docker" "start" "-a" "f2a1fd837203102ff8aa82be747bcfde4c5d350831214db1b94b3dff2f7312fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2a1fd837203102ff8aa82be747bcfde4c5d350831214db1b94b3dff2f7312fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2a1fd837203102ff8aa82be747bcfde4c5d350831214db1b94b3dff2f7312fc", kill_on_drop: false }`
[INFO] [stdout] f2a1fd837203102ff8aa82be747bcfde4c5d350831214db1b94b3dff2f7312fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 220698b61316034d33e70afb65680c73904468b3f392899aea3c4a66ce28676d
[INFO] running `Command { std: "docker" "start" "-a" "220698b61316034d33e70afb65680c73904468b3f392899aea3c4a66ce28676d", kill_on_drop: false }`
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[INFO] [stdout] warning: variant `LockShared` is never constructed
[INFO] [stdout]   --> src/util/file_lock.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub enum FileLockError {
[INFO] [stdout]    |          ------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 28 |     LockShared(PathBuf, #[source] io::Error),
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FileLockError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `acquire_shared_lock` is never used
[INFO] [stdout]   --> src/util/file_lock.rs:61:12
[INFO] [stdout]    |
[INFO] [stdout] 37 | impl FileLock {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 61 |     pub fn acquire_shared_lock<P>(path: P) -> Result<FileLock, FileLockError>
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `LockShared` is never constructed
[INFO] [stdout]   --> src/util/file_lock.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub enum FileLockError {
[INFO] [stdout]    |          ------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 28 |     LockShared(PathBuf, #[source] io::Error),
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FileLockError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `acquire_shared_lock` is never used
[INFO] [stdout]   --> src/util/file_lock.rs:61:12
[INFO] [stdout]    |
[INFO] [stdout] 37 | impl FileLock {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 61 |     pub fn acquire_shared_lock<P>(path: P) -> Result<FileLock, FileLockError>
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 58.42s
[INFO] running `Command { std: "docker" "inspect" "220698b61316034d33e70afb65680c73904468b3f392899aea3c4a66ce28676d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "220698b61316034d33e70afb65680c73904468b3f392899aea3c4a66ce28676d", kill_on_drop: false }`
[INFO] [stdout] 220698b61316034d33e70afb65680c73904468b3f392899aea3c4a66ce28676d