[INFO] fetching crate aki-gsub 0.1.37...
[INFO] checking aki-gsub-0.1.37 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate aki-gsub 0.1.37 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate aki-gsub 0.1.37 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2-tc1/source/.cargo/config
[INFO] started tweaking crates.io crate aki-gsub 0.1.37
[INFO] finished tweaking crates.io crate aki-gsub 0.1.37
[INFO] tweaked toml for crates.io crate aki-gsub 0.1.37 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate aki-gsub 0.1.37 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded memx-cdy v0.1.10
[INFO] [stderr]   Downloaded indoc v1.0.8
[INFO] [stderr]   Downloaded cpufeatures v0.2.5
[INFO] [stderr]   Downloaded runnel v0.3.15
[INFO] [stderr]   Downloaded semver v1.0.16
[INFO] [stderr]   Downloaded anyhow v1.0.68
[INFO] [stderr]   Downloaded flood-tide v0.2.8
[INFO] [stderr]   Downloaded aho-corasick v0.7.20
[INFO] [stderr]   Downloaded regex-syntax v0.6.28
[INFO] [stderr]   Downloaded regex v1.7.1
[INFO] [stderr]   Downloaded memx v0.1.24
[INFO] [stderr]   Downloaded rust-version-info-file v0.1.7
[INFO] [stderr]   Downloaded exec-target v0.2.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ab13f58d2100fc4e6eb39ea951948c3ab29a23169299df34f76eb37609e7edd7
[INFO] running `Command { std: "docker" "start" "-a" "ab13f58d2100fc4e6eb39ea951948c3ab29a23169299df34f76eb37609e7edd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ab13f58d2100fc4e6eb39ea951948c3ab29a23169299df34f76eb37609e7edd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab13f58d2100fc4e6eb39ea951948c3ab29a23169299df34f76eb37609e7edd7", kill_on_drop: false }`
[INFO] [stdout] ab13f58d2100fc4e6eb39ea951948c3ab29a23169299df34f76eb37609e7edd7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 21b3a2d4d81afcfd8e8e1df4c133f366b0e4d1d166733f08c93ad40b34fbeb9a
[INFO] running `Command { std: "docker" "start" "-a" "21b3a2d4d81afcfd8e8e1df4c133f366b0e4d1d166733f08c93ad40b34fbeb9a", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.16
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]     Checking cpufeatures v0.2.5
[INFO] [stderr]    Compiling anyhow v1.0.68
[INFO] [stderr]    Compiling rust-version-info-file v0.1.7
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]     Checking flood-tide v0.2.8
[INFO] [stderr]     Checking exec-target v0.2.7
[INFO] [stderr]    Compiling indoc v1.0.8
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]    Compiling memx v0.1.24
[INFO] [stderr]    Compiling runnel v0.3.15
[INFO] [stderr]    Compiling aki-gsub v0.1.37 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking memx-cdy v0.1.10
[INFO] [stderr]     Checking regex v1.7.1
[INFO] [stdout] warning: unused import: `self::opt_uc_x_param::OptUcXParamParseError`
[INFO] [stdout]  --> src/util/mod.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub use self::opt_uc_x_param::OptUcXParamParseError;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::opt_color_when::OptColorWhenParseError`
[INFO] [stdout]  --> src/util/mod.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub use self::opt_color_when::OptColorWhenParseError;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::opt_uc_x_param::OptUcXParamParseError`
[INFO] [stdout]  --> src/util/mod.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub use self::opt_uc_x_param::OptUcXParamParseError;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::opt_color_when::OptColorWhenParseError`
[INFO] [stdout]  --> src/util/mod.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub use self::opt_color_when::OptColorWhenParseError;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.76s
[INFO] running `Command { std: "docker" "inspect" "21b3a2d4d81afcfd8e8e1df4c133f366b0e4d1d166733f08c93ad40b34fbeb9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21b3a2d4d81afcfd8e8e1df4c133f366b0e4d1d166733f08c93ad40b34fbeb9a", kill_on_drop: false }`
[INFO] [stdout] 21b3a2d4d81afcfd8e8e1df4c133f366b0e4d1d166733f08c93ad40b34fbeb9a