[INFO] fetching crate trait-gen 0.3.2... [INFO] checking trait-gen-0.3.2 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604 [INFO] extracting crate trait-gen 0.3.2 into /workspace/builds/worker-2-tc1/source [INFO] validating manifest of crates.io crate trait-gen 0.3.2 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate trait-gen 0.3.2 [INFO] finished tweaking crates.io crate trait-gen 0.3.2 [INFO] tweaked toml for crates.io crate trait-gen 0.3.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 8 packages to latest compatible versions [INFO] [stderr] Adding syn v1.0.109 (latest: v2.0.77) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] f996f7140c52a72c9837cd778d80b86239b2b70828724f36877caca3f8df41d4 [INFO] running `Command { std: "docker" "start" "-a" "f996f7140c52a72c9837cd778d80b86239b2b70828724f36877caca3f8df41d4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f996f7140c52a72c9837cd778d80b86239b2b70828724f36877caca3f8df41d4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f996f7140c52a72c9837cd778d80b86239b2b70828724f36877caca3f8df41d4", kill_on_drop: false }` [INFO] [stdout] f996f7140c52a72c9837cd778d80b86239b2b70828724f36877caca3f8df41d4 [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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 853227500f315f188f2a114986a7e156c4a8c60ffe36ea8153b8b3fab2f0abeb [INFO] running `Command { std: "docker" "start" "-a" "853227500f315f188f2a114986a7e156c4a8c60ffe36ea8153b8b3fab2f0abeb", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.86 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Checking unicode-ident v1.0.12 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Checking quote v1.0.37 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Checking trait-gen v0.3.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:469:29 [INFO] [stdout] | [INFO] [stdout] 469 | let mut nth_new_seg = new_seg.last_mut().unwrap(); [INFO] [stdout] | ----^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:469:29 [INFO] [stdout] | [INFO] [stdout] 469 | let mut nth_new_seg = new_seg.last_mut().unwrap(); [INFO] [stdout] | ----^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:469:29 [INFO] [stdout] | [INFO] [stdout] 469 | let mut nth_new_seg = new_seg.last_mut().unwrap(); [INFO] [stdout] | ----^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `fake` is never used [INFO] [stdout] --> tests/integration.rs:512:29 [INFO] [stdout] | [INFO] [stdout] 512 | trait Number { fn fake(x: X) -> T; } [INFO] [stdout] | ------ ^^^^ [INFO] [stdout] | | [INFO] [stdout] | associated function in this trait [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.deref()` on a double reference, which returns `type_case_04::Meter` instead of dereferencing the inner type [INFO] [stdout] --> tests/integration.rs:227:20 [INFO] [stdout] | [INFO] [stdout] 227 | T(-self.deref().0) [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(suspicious_double_ref_op)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.deref()` on a double reference, which returns `type_case_04::Foot` instead of dereferencing the inner type [INFO] [stdout] --> tests/integration.rs:227:20 [INFO] [stdout] | [INFO] [stdout] 227 | T(-self.deref().0) [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.07s [INFO] running `Command { std: "docker" "inspect" "853227500f315f188f2a114986a7e156c4a8c60ffe36ea8153b8b3fab2f0abeb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "853227500f315f188f2a114986a7e156c4a8c60ffe36ea8153b8b3fab2f0abeb", kill_on_drop: false }` [INFO] [stdout] 853227500f315f188f2a114986a7e156c4a8c60ffe36ea8153b8b3fab2f0abeb