[INFO] fetching crate libpath 0.0.1...
[INFO] checking libpath-0.0.1 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] extracting crate libpath 0.0.1 into /workspace/builds/worker-5-tc1/source
[INFO] removed /workspace/builds/worker-5-tc1/source/.cargo/config.toml
[INFO] started tweaking crates.io crate libpath 0.0.1
[INFO] finished tweaking crates.io crate libpath 0.0.1
[INFO] tweaked toml for crates.io crate libpath 0.0.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate libpath 0.0.1 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fastparse v0.0.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 71d11cf4ad3e40c3bba1d0c37d77a038595ff6cb5d603a71ad10e6714790c03a
[INFO] running `Command { std: "docker" "start" "-a" "71d11cf4ad3e40c3bba1d0c37d77a038595ff6cb5d603a71ad10e6714790c03a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "71d11cf4ad3e40c3bba1d0c37d77a038595ff6cb5d603a71ad10e6714790c03a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71d11cf4ad3e40c3bba1d0c37d77a038595ff6cb5d603a71ad10e6714790c03a", kill_on_drop: false }`
[INFO] [stdout] 71d11cf4ad3e40c3bba1d0c37d77a038595ff6cb5d603a71ad10e6714790c03a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b70d051ca746a6bf00ddf664b630e1e19df33ff5536e71ef7688a0ced652604e
[INFO] running `Command { std: "docker" "start" "-a" "b70d051ca746a6bf00ddf664b630e1e19df33ff5536e71ef7688a0ced652604e", kill_on_drop: false }`
[INFO] [stderr]     Checking fastparse v0.0.3
[INFO] [stderr]     Checking libpath v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable `c2` is assigned to, but never used
[INFO] [stdout]    --> src/lib.rs:486:25
[INFO] [stdout]     |
[INFO] [stdout] 486 |                 let mut c2 : char;
[INFO] [stdout]     |                         ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_c2` instead
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `c2` is never read
[INFO] [stdout]    --> src/lib.rs:496:30
[INFO] [stdout]     |
[INFO] [stdout] 496 |                         2 => c2 = c,
[INFO] [stdout]     |                              ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `c2` is assigned to, but never used
[INFO] [stdout]    --> src/lib.rs:486:25
[INFO] [stdout]     |
[INFO] [stdout] 486 |                 let mut c2 : char;
[INFO] [stdout]     |                         ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_c2` instead
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `c2` is never read
[INFO] [stdout]    --> src/lib.rs:496:30
[INFO] [stdout]     |
[INFO] [stdout] 496 |                         2 => c2 = c,
[INFO] [stdout]     |                              ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `Command { std: "docker" "inspect" "b70d051ca746a6bf00ddf664b630e1e19df33ff5536e71ef7688a0ced652604e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b70d051ca746a6bf00ddf664b630e1e19df33ff5536e71ef7688a0ced652604e", kill_on_drop: false }`
[INFO] [stdout] b70d051ca746a6bf00ddf664b630e1e19df33ff5536e71ef7688a0ced652604e