[INFO] fetching crate senile 0.1.26...
[INFO] checking senile-0.1.26 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate senile 0.1.26 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate senile 0.1.26 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] started tweaking crates.io crate senile 0.1.26
[INFO] finished tweaking crates.io crate senile 0.1.26
[INFO] tweaked toml for crates.io crate senile 0.1.26 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate senile 0.1.26 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 crossbeam-queue v0.3.1
[INFO] [stderr]   Downloaded crossbeam v0.8.0
[INFO] [stderr]   Downloaded fancy-regex v0.6.0
[INFO] [stderr]   Downloaded aquamarine v0.1.10
[INFO] [stderr]   Downloaded libc v0.2.87
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 82df976d49b3e2272edd00161a7bbb50b757211cf2d489de4a51e1ea0dbc2286
[INFO] running `Command { std: "docker" "start" "-a" "82df976d49b3e2272edd00161a7bbb50b757211cf2d489de4a51e1ea0dbc2286", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "82df976d49b3e2272edd00161a7bbb50b757211cf2d489de4a51e1ea0dbc2286", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82df976d49b3e2272edd00161a7bbb50b757211cf2d489de4a51e1ea0dbc2286", kill_on_drop: false }`
[INFO] [stdout] 82df976d49b3e2272edd00161a7bbb50b757211cf2d489de4a51e1ea0dbc2286
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 04e8b28f82e008066c00c7a3d321e1ce1476f38868d9cb0e7969a1815dea0dbd
[INFO] running `Command { std: "docker" "start" "-a" "04e8b28f82e008066c00c7a3d321e1ce1476f38868d9cb0e7969a1815dea0dbd", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling libc v0.2.87
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking regex-syntax v0.6.22
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]     Checking bit-set v0.5.2
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking crossbeam-epoch v0.9.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking crossbeam-queue v0.3.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking crossbeam v0.8.0
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]    Compiling aquamarine v0.1.10
[INFO] [stderr]     Checking fancy-regex v0.6.0
[INFO] [stderr]     Checking senile v0.1.26 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Result` is imported redundantly
[INFO] [stdout]  --> src/args.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     result::Result,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Result` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Result` is imported redundantly
[INFO] [stdout]  --> src/args.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     result::Result,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Result` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Result` is imported redundantly
[INFO] [stdout]  --> src/args.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     result::Result,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Result` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Result` is imported redundantly
[INFO] [stdout]  --> src/args.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     result::Result,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Result` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.54s
[INFO] running `Command { std: "docker" "inspect" "04e8b28f82e008066c00c7a3d321e1ce1476f38868d9cb0e7969a1815dea0dbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04e8b28f82e008066c00c7a3d321e1ce1476f38868d9cb0e7969a1815dea0dbd", kill_on_drop: false }`
[INFO] [stdout] 04e8b28f82e008066c00c7a3d321e1ce1476f38868d9cb0e7969a1815dea0dbd