[INFO] crate fuzzmutator 0.2.1 is already in cache
[INFO] checking fuzzmutator-0.2.1 against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] extracting crate fuzzmutator 0.2.1 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate fuzzmutator 0.2.1 on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate fuzzmutator 0.2.1
[INFO] finished tweaking crates.io crate fuzzmutator 0.2.1
[INFO] tweaked toml for crates.io crate fuzzmutator 0.2.1 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 018d650b78f1e3ebf6c38f04990c25fd4e03853ba98e9630e7f2772c86892176
[INFO] running `"docker" "start" "-a" "018d650b78f1e3ebf6c38f04990c25fd4e03853ba98e9630e7f2772c86892176"`
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking fuzzmutator v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0599]: no method named `mutation_grade` found for struct `mutator::MutatorEngine` in the current scope
[INFO] [stderr]    --> src/mutator.rs:389:19
[INFO] [stderr]     |
[INFO] [stderr] 28  | pub struct MutatorEngine {
[INFO] [stderr]     | ------------------------ method `mutation_grade` not found for this
[INFO] [stderr] ...
[INFO] [stderr] 389 |         mutatoren.mutation_grade(0.199);
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^ method not found in `mutator::MutatorEngine`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: could not compile `fuzzmutator`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "018d650b78f1e3ebf6c38f04990c25fd4e03853ba98e9630e7f2772c86892176"`
[INFO] running `"docker" "rm" "-f" "018d650b78f1e3ebf6c38f04990c25fd4e03853ba98e9630e7f2772c86892176"`
[INFO] [stdout] 018d650b78f1e3ebf6c38f04990c25fd4e03853ba98e9630e7f2772c86892176
