[INFO] fetching crate fuzzcheck_mutators_derive 0.9.0...
[INFO] testing fuzzcheck_mutators_derive-0.9.0 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate fuzzcheck_mutators_derive 0.9.0 into /workspace/builds/worker-26/source
[INFO] validating manifest of crates.io crate fuzzcheck_mutators_derive 0.9.0 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fuzzcheck_mutators_derive 0.9.0
[INFO] finished tweaking crates.io crate fuzzcheck_mutators_derive 0.9.0
[INFO] tweaked toml for crates.io crate fuzzcheck_mutators_derive 0.9.0 written to /workspace/builds/worker-26/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0ab1398f264ed529cb640736b578d0d87dba149e29238bc926b7a137eefee6b1
[INFO] running `Command { std: "docker" "start" "-a" "0ab1398f264ed529cb640736b578d0d87dba149e29238bc926b7a137eefee6b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ab1398f264ed529cb640736b578d0d87dba149e29238bc926b7a137eefee6b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ab1398f264ed529cb640736b578d0d87dba149e29238bc926b7a137eefee6b1", kill_on_drop: false }`
[INFO] [stdout] 0ab1398f264ed529cb640736b578d0d87dba149e29238bc926b7a137eefee6b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e5d25217e11b1e71df2e1546aaf1fcb79e3bea4514b84d47e3787fbec5140001
[INFO] running `Command { std: "docker" "start" "-a" "e5d25217e11b1e71df2e1546aaf1fcb79e3bea4514b84d47e3787fbec5140001", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling decent-synquote-alternative v0.4.0
[INFO] [stderr]    Compiling fuzzcheck_mutators_derive v0.9.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.50s
[INFO] running `Command { std: "docker" "inspect" "e5d25217e11b1e71df2e1546aaf1fcb79e3bea4514b84d47e3787fbec5140001", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5d25217e11b1e71df2e1546aaf1fcb79e3bea4514b84d47e3787fbec5140001", kill_on_drop: false }`
[INFO] [stdout] e5d25217e11b1e71df2e1546aaf1fcb79e3bea4514b84d47e3787fbec5140001
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6da57f209ee645ac44732cb783b62a3ea285bd340229eede2109558b9f671eee
[INFO] running `Command { std: "docker" "start" "-a" "6da57f209ee645ac44732cb783b62a3ea285bd340229eede2109558b9f671eee", kill_on_drop: false }`
[INFO] [stderr]    Compiling fuzzcheck_mutators_derive v0.9.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `Command { std: "docker" "inspect" "6da57f209ee645ac44732cb783b62a3ea285bd340229eede2109558b9f671eee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6da57f209ee645ac44732cb783b62a3ea285bd340229eede2109558b9f671eee", kill_on_drop: false }`
[INFO] [stdout] 6da57f209ee645ac44732cb783b62a3ea285bd340229eede2109558b9f671eee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5e644ebcbf907d6131d3cb9d911ef4bdfdfb93f94373f6044b48e5571fc332dc
[INFO] running `Command { std: "docker" "start" "-a" "5e644ebcbf907d6131d3cb9d911ef4bdfdfb93f94373f6044b48e5571fc332dc", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/fuzzcheck_mutators_derive-7557966c7bf3acd6)
[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] [stderr]    Doc-tests fuzzcheck_mutators_derive
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - make_basic_tuple_mutator (line 25) ... ignored
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5e644ebcbf907d6131d3cb9d911ef4bdfdfb93f94373f6044b48e5571fc332dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e644ebcbf907d6131d3cb9d911ef4bdfdfb93f94373f6044b48e5571fc332dc", kill_on_drop: false }`
[INFO] [stdout] 5e644ebcbf907d6131d3cb9d911ef4bdfdfb93f94373f6044b48e5571fc332dc