[INFO] cloning repository https://github.com/pizzamig/potnet
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pizzamig/potnet" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpizzamig%2Fpotnet"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpizzamig%2Fpotnet'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c6f357e4ca17520c39fa4e1e6bbb037d5d03e566
[INFO] checking pizzamig/potnet against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpizzamig%2Fpotnet" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pizzamig/potnet on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/pizzamig/potnet
[INFO] finished tweaking git repo https://github.com/pizzamig/potnet
[INFO] tweaked toml for git repo https://github.com/pizzamig/potnet written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/pizzamig/potnet already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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] cc20f77903fd57275228533096ef92534e62ce0d36cad9a13443174e6eeb184d
[INFO] running `"docker" "start" "-a" "cc20f77903fd57275228533096ef92534e62ce0d36cad9a13443174e6eeb184d"`
[INFO] [stderr]     Checking ipnet v2.0.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking backtrace v0.3.38
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking term v0.6.1
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]     Checking simplelog v0.7.3
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]    Compiling structopt-derive v0.3.2
[INFO] [stderr]     Checking structopt v0.3.2
[INFO] [stderr]    Compiling cargo_metadata v0.6.4
[INFO] [stderr]    Compiling skeptic v0.13.4
[INFO] [stderr]    Compiling structopt-flags v0.3.5
[INFO] [stderr]     Checking potnet v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 08s
[INFO] running `"docker" "inspect" "cc20f77903fd57275228533096ef92534e62ce0d36cad9a13443174e6eeb184d"`
[INFO] running `"docker" "rm" "-f" "cc20f77903fd57275228533096ef92534e62ce0d36cad9a13443174e6eeb184d"`
[INFO] [stdout] cc20f77903fd57275228533096ef92534e62ce0d36cad9a13443174e6eeb184d