[INFO] cloning repository https://github.com/Bruce0203/mutification
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Bruce0203/mutification" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBruce0203%2Fmutification", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBruce0203%2Fmutification'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1cf7050cb262a1f33f51e3f1a5bc4f3c82eb0cf0
[INFO] checking Bruce0203/mutification against master#da2544bfbe84df7b24d83c029c74299ebf6112c6 for pr-149681
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBruce0203%2Fmutification" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Bruce0203/mutification
[INFO] finished tweaking git repo https://github.com/Bruce0203/mutification
[INFO] tweaked toml for git repo https://github.com/Bruce0203/mutification written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Bruce0203/mutification on toolchain da2544bfbe84df7b24d83c029c74299ebf6112c6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+da2544bfbe84df7b24d83c029c74299ebf6112c6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Bruce0203/mutification 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" "+da2544bfbe84df7b24d83c029c74299ebf6112c6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: /workspace/builds/worker-1-tc1/source/Cargo.toml: unused manifest key: package.author
[INFO] [stderr] warning: /workspace/builds/worker-1-tc1/source/Cargo.toml: unused manifest key: workspace.package.author
[INFO] [stderr] warning: /workspace/builds/worker-1-tc1/source/impl/Cargo.toml: unused manifest key: package.author
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded plotters-svg v0.3.6
[INFO] [stderr]   Downloaded plotters-backend v0.3.6
[INFO] [stderr]   Downloaded plotters v0.3.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+da2544bfbe84df7b24d83c029c74299ebf6112c6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7508455e2cd31540e6ae03c637fddcd008c27b115549513c7d8641be287ccb44
[INFO] running `Command { std: "docker" "start" "-a" "7508455e2cd31540e6ae03c637fddcd008c27b115549513c7d8641be287ccb44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7508455e2cd31540e6ae03c637fddcd008c27b115549513c7d8641be287ccb44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7508455e2cd31540e6ae03c637fddcd008c27b115549513c7d8641be287ccb44", kill_on_drop: false }`
[INFO] [stdout] 7508455e2cd31540e6ae03c637fddcd008c27b115549513c7d8641be287ccb44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+da2544bfbe84df7b24d83c029c74299ebf6112c6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 926b2854639a4f56a3a8a7f8ea36616dae04f3a54ee3fb4fbfb9aac558009f8e
[INFO] running `Command { std: "docker" "start" "-a" "926b2854639a4f56a3a8a7f8ea36616dae04f3a54ee3fb4fbfb9aac558009f8e", kill_on_drop: false }`
[INFO] [stderr] warning: /opt/rustwide/workdir/Cargo.toml: unused manifest key: package.author
[INFO] [stderr] warning: /opt/rustwide/workdir/Cargo.toml: unused manifest key: workspace.package.author
[INFO] [stderr] warning: /opt/rustwide/workdir/impl/Cargo.toml: unused manifest key: package.author
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling serde v1.0.204
[INFO] [stderr]     Checking either v1.13.0
[INFO] [stderr]    Compiling serde_json v1.0.120
[INFO] [stderr]     Checking clap_lex v0.7.1
[INFO] [stderr]     Checking anstyle v1.0.7
[INFO] [stderr]     Checking ciborium-io v0.2.2
[INFO] [stderr]     Checking regex-syntax v0.8.4
[INFO] [stderr]     Checking plotters-backend v0.3.6
[INFO] [stderr]     Checking half v2.4.1
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking is-terminal v0.4.12
[INFO] [stderr]     Checking unicode-ident v1.0.12
[INFO] [stderr]     Checking oorandom v11.1.4
[INFO] [stderr]     Checking anes v0.1.6
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]     Checking ciborium-ll v0.2.2
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking plotters-svg v0.3.6
[INFO] [stderr]     Checking clap_builder v4.5.8
[INFO] [stderr]     Checking rayon-core v1.12.1
[INFO] [stderr]     Checking plotters v0.3.6
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.69
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking regex-automata v0.4.7
[INFO] [stderr]     Checking clap v4.5.8
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking mutification_derive v0.3.0 (/opt/rustwide/workdir/impl)
[INFO] [stderr]     Checking regex v1.10.5
[INFO] [stderr]    Compiling serde_derive v1.0.204
[INFO] [stderr]     Checking mutification v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.5.1
[INFO] [stdout] error[E0423]: expected value, found struct `RefCell`
[INFO] [stdout]  --> tests/test2.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     RefCell
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  --> /rustc/da2544bfbe84df7b24d83c029c74299ebf6112c6/library/core/src/cell.rs:827:0
[INFO] [stdout]   |
[INFO] [stdout]   = note: `RefCell` defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0423`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mutification` (test "test2") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "926b2854639a4f56a3a8a7f8ea36616dae04f3a54ee3fb4fbfb9aac558009f8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "926b2854639a4f56a3a8a7f8ea36616dae04f3a54ee3fb4fbfb9aac558009f8e", kill_on_drop: false }`
[INFO] [stdout] 926b2854639a4f56a3a8a7f8ea36616dae04f3a54ee3fb4fbfb9aac558009f8e
