[INFO] fetching crate genx 0.4.0...
[INFO] testing genx-0.4.0 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-1
[INFO] extracting crate genx 0.4.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate genx 0.4.0
[INFO] finished tweaking crates.io crate genx 0.4.0
[INFO] tweaked toml for crates.io crate genx 0.4.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate genx 0.4.0 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate genx 0.4.0 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" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rand_hc v0.3.1
[INFO] [stderr]   Downloaded rand_core v0.6.3
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.15
[INFO] [stderr]   Downloaded getrandom v0.2.3
[INFO] [stderr]   Downloaded rand v0.8.4
[INFO] [stderr]   Downloaded itertools v0.10.1
[INFO] [stderr]   Downloaded libc v0.2.106
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0bb1a590ddfacf8dffed4a76945d7d8dcf6d3b049974966f05c38e9296972bcb
[INFO] running `Command { std: "docker" "start" "-a" "0bb1a590ddfacf8dffed4a76945d7d8dcf6d3b049974966f05c38e9296972bcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0bb1a590ddfacf8dffed4a76945d7d8dcf6d3b049974966f05c38e9296972bcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bb1a590ddfacf8dffed4a76945d7d8dcf6d3b049974966f05c38e9296972bcb", kill_on_drop: false }`
[INFO] [stdout] 0bb1a590ddfacf8dffed4a76945d7d8dcf6d3b049974966f05c38e9296972bcb
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 715fc8bfce425098388e9ba0ec1b00e29fc2b9edc47b4da99679c2d3f2b8e2c0
[INFO] running `Command { std: "docker" "start" "-a" "715fc8bfce425098388e9ba0ec1b00e29fc2b9edc47b4da99679c2d3f2b8e2c0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.106
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling genx v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `random_offset` is never read
[INFO] [stdout]   --> src/selection/stochastic_universal.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |         random_offset += fitness_step;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.66s
[INFO] running `Command { std: "docker" "inspect" "715fc8bfce425098388e9ba0ec1b00e29fc2b9edc47b4da99679c2d3f2b8e2c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "715fc8bfce425098388e9ba0ec1b00e29fc2b9edc47b4da99679c2d3f2b8e2c0", kill_on_drop: false }`
[INFO] [stdout] 715fc8bfce425098388e9ba0ec1b00e29fc2b9edc47b4da99679c2d3f2b8e2c0
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 37dc4e1186688abf74efc53e66ca84d4708855fa9ef2439f06c489e12fcd53ae
[INFO] running `Command { std: "docker" "start" "-a" "37dc4e1186688abf74efc53e66ca84d4708855fa9ef2439f06c489e12fcd53ae", kill_on_drop: false }`
[INFO] [stderr]    Compiling genx v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `random_offset` is never read
[INFO] [stdout]   --> src/selection/stochastic_universal.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |         random_offset += fitness_step;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `random_offset` is never read
[INFO] [stdout]   --> src/selection/stochastic_universal.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |         random_offset += fitness_step;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `Command { std: "docker" "inspect" "37dc4e1186688abf74efc53e66ca84d4708855fa9ef2439f06c489e12fcd53ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37dc4e1186688abf74efc53e66ca84d4708855fa9ef2439f06c489e12fcd53ae", kill_on_drop: false }`
[INFO] [stdout] 37dc4e1186688abf74efc53e66ca84d4708855fa9ef2439f06c489e12fcd53ae
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2197ef2b182b1f44a4f64c4a31986da6a42e2f6159fb49a201d47a04e8b82efa
[INFO] running `Command { std: "docker" "start" "-a" "2197ef2b182b1f44a4f64c4a31986da6a42e2f6159fb49a201d47a04e8b82efa", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `random_offset` is never read
[INFO] [stderr]   --> src/selection/stochastic_universal.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         random_offset += fitness_step;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `genx` (lib) generated 1 warning
[INFO] [stderr] warning: `genx` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/genx-09fb41586ecbdcff)
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests genx
[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] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test src/mutation/inversion.rs - mutation::inversion::inversion_mutation (line 13) ... ok
[INFO] [stdout] test src/mutation/polynomial.rs - mutation::polynomial::polynomial_mutation (line 17) ... ok
[INFO] [stdout] test src/selection/tournament.rs - selection::tournament::tournament_selection (line 17) ... ok
[INFO] [stdout] test src/mutation/random.rs - mutation::random::random_mutation (line 16) ... ok
[INFO] [stdout] test src/selection/roulette_wheel.rs - selection::roulette_wheel::roulette_wheel_selection (line 18) ... ok
[INFO] [stdout] test src/selection/rank.rs - selection::rank::rank_selection (line 19) ... ok
[INFO] [stdout] test src/lib.rs - (line 37) ... ok
[INFO] [stdout] test src/selection/steady_state.rs - selection::steady_state::steady_state_selection (line 13) ... ok
[INFO] [stdout] test src/mutation/flipping.rs - mutation::flipping::flipping_mutation (line 14) ... ok
[INFO] [stdout] test src/selection/stochastic_universal.rs - selection::stochastic_universal::stochastic_universal_selection (line 18) ... ok
[INFO] [stdout] test src/mutation/scramble.rs - mutation::scramble::scramble_mutation (line 13) ... ok
[INFO] [stdout] test src/lib.rs - (line 78) ... ok
[INFO] [stdout] test src/selection/random.rs - selection::random::random_selection (line 17) ... ok
[INFO] [stdout] test src/mutation/swap.rs - mutation::swap::swap_mutation (line 10) ... ok
[INFO] [stdout] test src/lib.rs - (line 18) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.89s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2197ef2b182b1f44a4f64c4a31986da6a42e2f6159fb49a201d47a04e8b82efa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2197ef2b182b1f44a4f64c4a31986da6a42e2f6159fb49a201d47a04e8b82efa", kill_on_drop: false }`
[INFO] [stdout] 2197ef2b182b1f44a4f64c4a31986da6a42e2f6159fb49a201d47a04e8b82efa