[INFO] fetching crate fuzzcheck_mutators 0.6.0... [INFO] checking fuzzcheck_mutators-0.6.0 against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248 [INFO] extracting crate fuzzcheck_mutators 0.6.0 into /workspace/builds/worker-11/source [INFO] validating manifest of crates.io crate fuzzcheck_mutators 0.6.0 on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate fuzzcheck_mutators 0.6.0 [INFO] finished tweaking crates.io crate fuzzcheck_mutators 0.6.0 [INFO] tweaked toml for crates.io crate fuzzcheck_mutators 0.6.0 written to /workspace/builds/worker-11/source/Cargo.toml [INFO] crate crates.io crate fuzzcheck_mutators 0.6.0 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ab32dcdb3ad21a54aa4ad37867a70088b9a76e0642229a56502633ef8b5943de [INFO] running `Command { std: "docker" "start" "-a" "ab32dcdb3ad21a54aa4ad37867a70088b9a76e0642229a56502633ef8b5943de", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ab32dcdb3ad21a54aa4ad37867a70088b9a76e0642229a56502633ef8b5943de", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ab32dcdb3ad21a54aa4ad37867a70088b9a76e0642229a56502633ef8b5943de", kill_on_drop: false }` [INFO] [stdout] ab32dcdb3ad21a54aa4ad37867a70088b9a76e0642229a56502633ef8b5943de [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c80b0d6131d70dc08b85a21de28003f404ae0c731f2f1b4302f0cdd8a82d9cfa [INFO] running `Command { std: "docker" "start" "-a" "c80b0d6131d70dc08b85a21de28003f404ae0c731f2f1b4302f0cdd8a82d9cfa", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.24 [INFO] [stderr] Compiling unicode-xid v0.2.1 [INFO] [stderr] Checking fastrand v1.4.0 [INFO] [stderr] Checking fuzzcheck_traits v0.6.0 [INFO] [stderr] Compiling decent-synquote-alternative v0.3.0 [INFO] [stderr] Compiling fuzzcheck_mutators_derive v0.6.0 [INFO] [stderr] Checking fuzzcheck_mutators v0.6.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the feature `cmp_min_max_by` has been stable since 1.53.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:3:12 [INFO] [stdout] | [INFO] [stdout] 3 | #![feature(cmp_min_max_by)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `int_bits_const` has been stable since 1.53.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:5:12 [INFO] [stdout] | [INFO] [stdout] 5 | #![feature(int_bits_const)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `cmp_min_max_by` has been stable since 1.53.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:3:12 [INFO] [stdout] | [INFO] [stdout] 3 | #![feature(cmp_min_max_by)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `int_bits_const` has been stable since 1.53.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:5:12 [INFO] [stdout] | [INFO] [stdout] 5 | #![feature(int_bits_const)] [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] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> examples/vector_u8.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | let mut m = Vec::::default_mutator(); [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] --> examples/derive_enum_check_results.rs:34:9 [INFO] [stdout] | [INFO] [stdout] 34 | let mut m = X::default_mutator(); [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] --> examples/derive_struct.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | let mut m = S::::default_mutator(); [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: variable does not need to be mutable [INFO] [stdout] --> examples/derive_enum.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | let mut m = Vec::, bool>>::default_mutator(); [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: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 10.92s [INFO] running `Command { std: "docker" "inspect" "c80b0d6131d70dc08b85a21de28003f404ae0c731f2f1b4302f0cdd8a82d9cfa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c80b0d6131d70dc08b85a21de28003f404ae0c731f2f1b4302f0cdd8a82d9cfa", kill_on_drop: false }` [INFO] [stdout] c80b0d6131d70dc08b85a21de28003f404ae0c731f2f1b4302f0cdd8a82d9cfa