[INFO] cloning repository https://github.com/DRvader/rust-stack-overflow
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DRvader/rust-stack-overflow" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDRvader%2Frust-stack-overflow", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDRvader%2Frust-stack-overflow'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 652f21f5c606780a781e1c31a71d915e32375b31
[INFO] testing DRvader/rust-stack-overflow against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDRvader%2Frust-stack-overflow" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DRvader/rust-stack-overflow on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/DRvader/rust-stack-overflow
[INFO] finished tweaking git repo https://github.com/DRvader/rust-stack-overflow
[INFO] tweaked toml for git repo https://github.com/DRvader/rust-stack-overflow written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/DRvader/rust-stack-overflow already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f16d728b8c97673d08f9d5917618974b5ebe6bb965a50c1232eca1cff77e8cc7
[INFO] running `Command { std: "docker" "start" "-a" "f16d728b8c97673d08f9d5917618974b5ebe6bb965a50c1232eca1cff77e8cc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f16d728b8c97673d08f9d5917618974b5ebe6bb965a50c1232eca1cff77e8cc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f16d728b8c97673d08f9d5917618974b5ebe6bb965a50c1232eca1cff77e8cc7", kill_on_drop: false }`
[INFO] [stdout] f16d728b8c97673d08f9d5917618974b5ebe6bb965a50c1232eca1cff77e8cc7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a1f680807e1b7c15abe8d9731676bf63fa1ec4ca1aade610ff3a2039b58150cb
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a1f680807e1b7c15abe8d9731676bf63fa1ec4ca1aade610ff3a2039b58150cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-stack-overflow v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `rust-stack-overflow`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name rust_stack_overflow --edition=2018 src/main.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 -C metadata=c301589b90ad344c -C extra-filename=-c301589b90ad344c --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn` (signal: 11, SIGSEGV: invalid memory reference)
[INFO] running `Command { std: "docker" "inspect" "a1f680807e1b7c15abe8d9731676bf63fa1ec4ca1aade610ff3a2039b58150cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1f680807e1b7c15abe8d9731676bf63fa1ec4ca1aade610ff3a2039b58150cb", kill_on_drop: false }`
[INFO] [stdout] a1f680807e1b7c15abe8d9731676bf63fa1ec4ca1aade610ff3a2039b58150cb