[INFO] fetching crate fuzzcheck_mutators 0.6.0... [INFO] testing fuzzcheck_mutators-0.6.0 against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799 [INFO] extracting crate fuzzcheck_mutators 0.6.0 into /workspace/builds/worker-14/source [INFO] validating manifest of crates.io crate fuzzcheck_mutators 0.6.0 on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "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-14/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" "+8262275854dc0e5381c9d42d56257d94932c5a87" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded fuzzcheck_mutators_derive v0.6.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 2f03e8ea6e492cfbfca9acd2c5d57472aa25500430c77a0c77cf30df49e74b39 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "2f03e8ea6e492cfbfca9acd2c5d57472aa25500430c77a0c77cf30df49e74b39", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "2f03e8ea6e492cfbfca9acd2c5d57472aa25500430c77a0c77cf30df49e74b39", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2f03e8ea6e492cfbfca9acd2c5d57472aa25500430c77a0c77cf30df49e74b39", kill_on_drop: false }` [INFO] [stdout] 2f03e8ea6e492cfbfca9acd2c5d57472aa25500430c77a0c77cf30df49e74b39 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6afafa3f440952dd4b2940636f6656f7730a3448e468a4f57b636433e4147b9a [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "6afafa3f440952dd4b2940636f6656f7730a3448e468a4f57b636433e4147b9a", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.24 [INFO] [stderr] Compiling fastrand v1.4.0 [INFO] [stderr] Compiling 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] Compiling 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: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 11.18s [INFO] running `Command { std: "docker" "inspect" "6afafa3f440952dd4b2940636f6656f7730a3448e468a4f57b636433e4147b9a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6afafa3f440952dd4b2940636f6656f7730a3448e468a4f57b636433e4147b9a", kill_on_drop: false }` [INFO] [stdout] 6afafa3f440952dd4b2940636f6656f7730a3448e468a4f57b636433e4147b9a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 7b157029d84c80d20136b0546449b088d8e88f396348a29cc22fc91988a5813e [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "7b157029d84c80d20136b0546449b088d8e88f396348a29cc22fc91988a5813e", kill_on_drop: false }` [INFO] [stderr] Compiling 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: 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: 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: 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] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [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] [stderr] Finished test [unoptimized + debuginfo] target(s) in 7.91s [INFO] running `Command { std: "docker" "inspect" "7b157029d84c80d20136b0546449b088d8e88f396348a29cc22fc91988a5813e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7b157029d84c80d20136b0546449b088d8e88f396348a29cc22fc91988a5813e", kill_on_drop: false }` [INFO] [stdout] 7b157029d84c80d20136b0546449b088d8e88f396348a29cc22fc91988a5813e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] d2a2396e1047b0ec2cf776853d7fa20af9ec9027743694cd59002613ad34b671 [INFO] running `Command { std: "docker" "start" "-a" "d2a2396e1047b0ec2cf776853d7fa20af9ec9027743694cd59002613ad34b671", kill_on_drop: false }` [INFO] [stderr] warning: the feature `cmp_min_max_by` has been stable since 1.53.0 and no longer requires an attribute to enable [INFO] [stderr] --> src/lib.rs:3:12 [INFO] [stderr] | [INFO] [stderr] 3 | #![feature(cmp_min_max_by)] [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(stable_features)]` on by default [INFO] [stderr] [INFO] [stderr] warning: the feature `int_bits_const` has been stable since 1.53.0 and no longer requires an attribute to enable [INFO] [stderr] --> src/lib.rs:5:12 [INFO] [stderr] | [INFO] [stderr] 5 | #![feature(int_bits_const)] [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: `fuzzcheck_mutators` (lib) generated 2 warnings [INFO] [stderr] warning: `fuzzcheck_mutators` (lib test) generated 2 warnings (2 duplicates) [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> examples/derive_enum.rs:31:9 [INFO] [stderr] | [INFO] [stderr] 31 | let mut m = Vec::, bool>>::default_mutator(); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> examples/derive_struct.rs:31:9 [INFO] [stderr] | [INFO] [stderr] 31 | let mut m = S::::default_mutator(); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> examples/vector_u8.rs:16:9 [INFO] [stderr] | [INFO] [stderr] 16 | let mut m = Vec::::default_mutator(); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> examples/derive_enum_check_results.rs:34:9 [INFO] [stderr] | [INFO] [stderr] 34 | let mut m = X::default_mutator(); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: `fuzzcheck_mutators` (example "derive_enum") generated 1 warning [INFO] [stderr] warning: `fuzzcheck_mutators` (example "derive_struct") generated 1 warning [INFO] [stderr] warning: `fuzzcheck_mutators` (example "vector_u8") generated 1 warning [INFO] [stderr] warning: `fuzzcheck_mutators` (example "derive_enum_check_results") generated 1 warning [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.09s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/fuzzcheck_mutators-c06dd9812973a055) [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test test::test_size_to_cplxity ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s [INFO] [stdout] [INFO] [stderr] Doc-tests fuzzcheck_mutators [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "d2a2396e1047b0ec2cf776853d7fa20af9ec9027743694cd59002613ad34b671", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d2a2396e1047b0ec2cf776853d7fa20af9ec9027743694cd59002613ad34b671", kill_on_drop: false }` [INFO] [stdout] d2a2396e1047b0ec2cf776853d7fa20af9ec9027743694cd59002613ad34b671