[INFO] fetching crate byte-mutator 0.2.0...
[INFO] testing byte-mutator-0.2.0 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate byte-mutator 0.2.0 into /workspace/builds/worker-32/source
[INFO] validating manifest of crates.io crate byte-mutator 0.2.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate byte-mutator 0.2.0
[INFO] finished tweaking crates.io crate byte-mutator 0.2.0
[INFO] tweaked toml for crates.io crate byte-mutator 0.2.0 written to /workspace/builds/worker-32/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bba689364931d7807522eb26f146c5f51a75a051843686dddc1d45ff860a5eaa
[INFO] running `Command { std: "docker" "start" "-a" "bba689364931d7807522eb26f146c5f51a75a051843686dddc1d45ff860a5eaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bba689364931d7807522eb26f146c5f51a75a051843686dddc1d45ff860a5eaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bba689364931d7807522eb26f146c5f51a75a051843686dddc1d45ff860a5eaa", kill_on_drop: false }`
[INFO] [stdout] bba689364931d7807522eb26f146c5f51a75a051843686dddc1d45ff860a5eaa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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=warn" "-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" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1378fbfc526aa70722cbb3dfd334bbdacfde9847f0c9f8770688f4bf9a7350bf
[INFO] running `Command { std: "docker" "start" "-a" "1378fbfc526aa70722cbb3dfd334bbdacfde9847f0c9f8770688f4bf9a7350bf", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling byte-mutator v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Iterations`
[INFO] [stdout]  --> src/fuzz_config.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::{Iterations, Stage};
[INFO] [stdout]   |             ^^^^^^^^^^
[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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.20s
[INFO] running `Command { std: "docker" "inspect" "1378fbfc526aa70722cbb3dfd334bbdacfde9847f0c9f8770688f4bf9a7350bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1378fbfc526aa70722cbb3dfd334bbdacfde9847f0c9f8770688f4bf9a7350bf", kill_on_drop: false }`
[INFO] [stdout] 1378fbfc526aa70722cbb3dfd334bbdacfde9847f0c9f8770688f4bf9a7350bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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=warn" "-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" "+beta-2021-08-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 54898197f029ee3213be4a477de8a04473577d6ddc4cee0e3d5e7ecc135333d5
[INFO] running `Command { std: "docker" "start" "-a" "54898197f029ee3213be4a477de8a04473577d6ddc4cee0e3d5e7ecc135333d5", kill_on_drop: false }`
[INFO] [stderr]    Compiling byte-mutator v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Iterations`
[INFO] [stdout]  --> src/fuzz_config.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::{Iterations, Stage};
[INFO] [stdout]   |             ^^^^^^^^^^
[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: variable does not need to be mutable
[INFO] [stdout]   --> tests/tests.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let mut mutator = ByteMutator::new().with_stages(vec![Stage {
[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: unused import: `Iterations`
[INFO] [stdout]  --> src/fuzz_config.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::{Iterations, Stage};
[INFO] [stdout]   |             ^^^^^^^^^^
[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 test [unoptimized + debuginfo] target(s) in 2.53s
[INFO] running `Command { std: "docker" "inspect" "54898197f029ee3213be4a477de8a04473577d6ddc4cee0e3d5e7ecc135333d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54898197f029ee3213be4a477de8a04473577d6ddc4cee0e3d5e7ecc135333d5", kill_on_drop: false }`
[INFO] [stdout] 54898197f029ee3213be4a477de8a04473577d6ddc4cee0e3d5e7ecc135333d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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=warn" "-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" "+beta-2021-08-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 80683f9a3f39f05ffefb687cf0974693f564c0ceb6867271eda4d5702168f450
[INFO] running `Command { std: "docker" "start" "-a" "80683f9a3f39f05ffefb687cf0974693f564c0ceb6867271eda4d5702168f450", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused import: `Iterations`
[INFO] [stderr]  --> src/fuzz_config.rs:5:13
[INFO] [stderr]   |
[INFO] [stderr] 5 | use crate::{Iterations, Stage};
[INFO] [stderr]   |             ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `byte-mutator` (lib) generated 1 warning
[INFO] [stderr] warning: `byte-mutator` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/tests.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let mut mutator = ByteMutator::new().with_stages(vec![Stage {
[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: `byte-mutator` (test "tests") generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.61s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/byte_mutator-d0e91ba6705e0a17)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test fuzz_config::tests::config_from_file ... ok
[INFO] [stdout] test undo_buffer::tests::mutate_and_reset ... ok
[INFO] [stdout] test fuzz_config::tests::config_from_string ... ok
[INFO] [stdout] test tests::mutator_stage ... ok
[INFO] [stdout] test mutators::bitflipper::tests::flip_bit ... ok
[INFO] [stdout] test undo_buffer::tests::mutate_reset_range ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/tests.rs (/opt/rustwide/target/debug/deps/tests-1a0af127f5fbc338)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test mutator ... ok
[INFO] [stdout] test mutator_from_config ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests byte-mutator
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 7) ... ok
[INFO] [stdout] test src/mutators/mod.rs - mutators (line 4) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.25s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "80683f9a3f39f05ffefb687cf0974693f564c0ceb6867271eda4d5702168f450", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80683f9a3f39f05ffefb687cf0974693f564c0ceb6867271eda4d5702168f450", kill_on_drop: false }`
[INFO] [stdout] 80683f9a3f39f05ffefb687cf0974693f564c0ceb6867271eda4d5702168f450
