[INFO] cloning repository https://github.com/mkaufmann/buddhabrot
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mkaufmann/buddhabrot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmkaufmann%2Fbuddhabrot"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmkaufmann%2Fbuddhabrot'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0000c5b5ae7afa83c33a322c285baa5fb70278bd
[INFO] checking mkaufmann/buddhabrot against master#914adf04af1c1a984707f778da3d04590c03d144 for pr-72331
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmkaufmann%2Fbuddhabrot" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mkaufmann/buddhabrot on toolchain 914adf04af1c1a984707f778da3d04590c03d144
[INFO] running `"/workspace/cargo-home/bin/cargo" "+914adf04af1c1a984707f778da3d04590c03d144" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/mkaufmann/buddhabrot
[INFO] finished tweaking git repo https://github.com/mkaufmann/buddhabrot
[INFO] tweaked toml for git repo https://github.com/mkaufmann/buddhabrot written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/mkaufmann/buddhabrot already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+914adf04af1c1a984707f778da3d04590c03d144" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+914adf04af1c1a984707f778da3d04590c03d144" "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] 336fee00df25d6f18f2f2e2e41c57f1b86dddfb5b34a0b9e4c6e711a8e0047a2
[INFO] running `"docker" "start" "-a" "336fee00df25d6f18f2f2e2e41c57f1b86dddfb5b34a0b9e4c6e711a8e0047a2"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]     Checking rand_core v0.3.0
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]     Checking byteorder v1.2.7
[INFO] [stderr]    Compiling num-derive v0.2.3
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking arrayvec v0.4.8
[INFO] [stderr]     Checking inflate v0.4.4
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking rand_xorshift v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking deflate v0.7.19
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.0
[INFO] [stderr]    Compiling rand v0.6.1
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking png v0.12.0
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]     Checking rayon v1.0.3
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]     Checking tiff v0.2.1
[INFO] [stderr]     Checking image v0.20.1
[INFO] [stderr]     Checking buddhabrot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/main.rs:82:69
[INFO] [stderr]    |
[INFO] [stderr] 82 |         Err(why) => panic!("couldn't open '{}': {}", file_name, why.description()),
[INFO] [stderr]    |                                                                     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/main.rs:82:69
[INFO] [stderr]    |
[INFO] [stderr] 82 |         Err(why) => panic!("couldn't open '{}': {}", file_name, why.description()),
[INFO] [stderr]    |                                                                     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 32.74s
[INFO] running `"docker" "inspect" "336fee00df25d6f18f2f2e2e41c57f1b86dddfb5b34a0b9e4c6e711a8e0047a2"`
[INFO] running `"docker" "rm" "-f" "336fee00df25d6f18f2f2e2e41c57f1b86dddfb5b34a0b9e4c6e711a8e0047a2"`
[INFO] [stdout] 336fee00df25d6f18f2f2e2e41c57f1b86dddfb5b34a0b9e4c6e711a8e0047a2