[INFO] crate nrfind 1.0.3 is already in cache
[INFO] checking nrfind-1.0.3 against master#4007d4ef26eab44bdabc2b7574d032152264d3ad for pr-66919
[INFO] extracting crate nrfind 1.0.3 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate nrfind 1.0.3 on toolchain 4007d4ef26eab44bdabc2b7574d032152264d3ad
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4007d4ef26eab44bdabc2b7574d032152264d3ad" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate nrfind 1.0.3
[INFO] finished tweaking crates.io crate nrfind 1.0.3
[INFO] tweaked toml for crates.io crate nrfind 1.0.3 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate nrfind 1.0.3 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4007d4ef26eab44bdabc2b7574d032152264d3ad" "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" "+4007d4ef26eab44bdabc2b7574d032152264d3ad" "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] b1c34c0061834d222b41dcad8554b2114248789af3c494c7e66f1a32d9119d95
[INFO] running `"docker" "start" "-a" "b1c34c0061834d222b41dcad8554b2114248789af3c494c7e66f1a32d9119d95"`
[INFO] [stderr]    Compiling num-bigint v0.2.3
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]     Checking num-integer v0.1.41
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking nrfind v1.0.3 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:71:32
[INFO] [stderr]    |
[INFO] [stderr] 71 | pub fn find_root<N>(function: &Fn(N) -> N, derivative: &Fn(N) -> N, x0: N, acceptable_err: N, max_iterations: i32) -> NumericSolutionResult<N>
[INFO] [stderr]    |                                ^^^^^^^^^^ help: use `dyn`: `dyn Fn(N) -> N`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:71:57
[INFO] [stderr]    |
[INFO] [stderr] 71 | pub fn find_root<N>(function: &Fn(N) -> N, derivative: &Fn(N) -> N, x0: N, acceptable_err: N, max_iterations: i32) -> NumericSolutionResult<N>
[INFO] [stderr]    |                                                         ^^^^^^^^^^ help: use `dyn`: `dyn Fn(N) -> N`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:71:32
[INFO] [stderr]    |
[INFO] [stderr] 71 | pub fn find_root<N>(function: &Fn(N) -> N, derivative: &Fn(N) -> N, x0: N, acceptable_err: N, max_iterations: i32) -> NumericSolutionResult<N>
[INFO] [stderr]    |                                ^^^^^^^^^^ help: use `dyn`: `dyn Fn(N) -> N`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:71:57
[INFO] [stderr]    |
[INFO] [stderr] 71 | pub fn find_root<N>(function: &Fn(N) -> N, derivative: &Fn(N) -> N, x0: N, acceptable_err: N, max_iterations: i32) -> NumericSolutionResult<N>
[INFO] [stderr]    |                                                         ^^^^^^^^^^ help: use `dyn`: `dyn Fn(N) -> N`
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `nrfind`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name nrfind src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --emit=dep-info,metadata -C debuginfo=2 --test -C metadata=59594f577f1d9023 -C extra-filename=-59594f577f1d9023 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern num=/opt/rustwide/target/debug/deps/libnum-cd12d789e84d1bb3.rmeta --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `nrfind`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name nrfind src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata -C debuginfo=2 -C metadata=992f0d2c48691c2b -C extra-filename=-992f0d2c48691c2b --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern num=/opt/rustwide/target/debug/deps/libnum-cd12d789e84d1bb3.rmeta --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] running `"docker" "inspect" "b1c34c0061834d222b41dcad8554b2114248789af3c494c7e66f1a32d9119d95"`
[INFO] running `"docker" "rm" "-f" "b1c34c0061834d222b41dcad8554b2114248789af3c494c7e66f1a32d9119d95"`
[INFO] [stdout] b1c34c0061834d222b41dcad8554b2114248789af3c494c7e66f1a32d9119d95