[INFO] cloning repository https://github.com/etscrivner/programmingbitcoin-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/etscrivner/programmingbitcoin-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fetscrivner%2Fprogrammingbitcoin-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fetscrivner%2Fprogrammingbitcoin-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4741bf1d911bcc74fb993e71f3131a0e09f6f5f8
[INFO] checking etscrivner/programmingbitcoin-rust against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fetscrivner%2Fprogrammingbitcoin-rust" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/etscrivner/programmingbitcoin-rust on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/etscrivner/programmingbitcoin-rust
[INFO] finished tweaking git repo https://github.com/etscrivner/programmingbitcoin-rust
[INFO] tweaked toml for git repo https://github.com/etscrivner/programmingbitcoin-rust written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/etscrivner/programmingbitcoin-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8ac0e7473a39619250d57a08fa9623802c702784eaa3cc2e0d25a6226ccf746f
[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" "8ac0e7473a39619250d57a08fa9623802c702784eaa3cc2e0d25a6226ccf746f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ac0e7473a39619250d57a08fa9623802c702784eaa3cc2e0d25a6226ccf746f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ac0e7473a39619250d57a08fa9623802c702784eaa3cc2e0d25a6226ccf746f", kill_on_drop: false }`
[INFO] [stdout] 8ac0e7473a39619250d57a08fa9623802c702784eaa3cc2e0d25a6226ccf746f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=forbid" "-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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae6bc98bc57d232ae9574d818e13870c0a3474434435390bc4f8761cd8f2b42f
[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" "ae6bc98bc57d232ae9574d818e13870c0a3474434435390bc4f8761cd8f2b42f", kill_on_drop: false }`
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.1.10
[INFO] [stderr]     Checking byteorder v1.2.7
[INFO] [stderr]    Compiling rug v1.2.2
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking block-buffer v0.7.0
[INFO] [stderr]     Checking sha2 v0.8.0
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "ae6bc98bc57d232ae9574d818e13870c0a3474434435390bc4f8761cd8f2b42f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae6bc98bc57d232ae9574d818e13870c0a3474434435390bc4f8761cd8f2b42f", kill_on_drop: false }`
[INFO] [stdout] ae6bc98bc57d232ae9574d818e13870c0a3474434435390bc4f8761cd8f2b42f