[INFO] cloning repository https://github.com/FrogBomb/ulam_spiral
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FrogBomb/ulam_spiral" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrogBomb%2Fulam_spiral"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrogBomb%2Fulam_spiral'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] dceecb927deda5de5b20e09bd5236cd2ed318326
[INFO] checking FrogBomb/ulam_spiral against try#d93021f5faa26e4f9d2719e79f9974e06aa40e17 for pr-71873
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrogBomb%2Fulam_spiral" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/FrogBomb/ulam_spiral on toolchain d93021f5faa26e4f9d2719e79f9974e06aa40e17
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d93021f5faa26e4f9d2719e79f9974e06aa40e17" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/FrogBomb/ulam_spiral
[INFO] finished tweaking git repo https://github.com/FrogBomb/ulam_spiral
[INFO] tweaked toml for git repo https://github.com/FrogBomb/ulam_spiral written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/FrogBomb/ulam_spiral already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d93021f5faa26e4f9d2719e79f9974e06aa40e17" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded concurrent_prime_sieve v0.2.2
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+d93021f5faa26e4f9d2719e79f9974e06aa40e17" "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] b7f533abd7c2bfcbbc28d76ab9653426e4fb3c77717c015c4b55cbac5f8bc8be
[INFO] running `"docker" "start" "-a" "b7f533abd7c2bfcbbc28d76ab9653426e4fb3c77717c015c4b55cbac5f8bc8be"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking num-traits v0.1.36
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]     Checking color_quant v1.0.0
[INFO] [stderr]     Checking deque v0.3.1
[INFO] [stderr]     Checking concurrent_prime_sieve v0.2.2
[INFO] [stderr]     Checking rayon v0.6.0
[INFO] [stderr]     Checking gif v0.9.0
[INFO] [stderr]     Checking num-integer v0.1.32
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking num-iter v0.1.32
[INFO] [stderr]     Checking num-rational v0.1.35
[INFO] [stderr]     Checking jpeg-decoder v0.1.11
[INFO] [stderr]     Checking png v0.6.2
[INFO] [stderr]     Checking image v0.12.2
[INFO] [stderr]     Checking ulam_spiral v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.36s
[INFO] running `"docker" "inspect" "b7f533abd7c2bfcbbc28d76ab9653426e4fb3c77717c015c4b55cbac5f8bc8be"`
[INFO] running `"docker" "rm" "-f" "b7f533abd7c2bfcbbc28d76ab9653426e4fb3c77717c015c4b55cbac5f8bc8be"`
[INFO] [stdout] b7f533abd7c2bfcbbc28d76ab9653426e4fb3c77717c015c4b55cbac5f8bc8be