[INFO] cloning repository https://github.com/benbrunton/rust_minesweeper
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/benbrunton/rust_minesweeper" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenbrunton%2Frust_minesweeper", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenbrunton%2Frust_minesweeper'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7bbc1df016dc749c4e6b7dd1875cc00bca45d9b0
[INFO] checking benbrunton/rust_minesweeper against try#b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b for pr-82781
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenbrunton%2Frust_minesweeper" "/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/benbrunton/rust_minesweeper on toolchain b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/benbrunton/rust_minesweeper
[INFO] finished tweaking git repo https://github.com/benbrunton/rust_minesweeper
[INFO] tweaked toml for git repo https://github.com/benbrunton/rust_minesweeper written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/benbrunton/rust_minesweeper already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c5b3475cc6fa07bd5a4deb4b0077fe769f3c11005e1d9d30710ceb31fdb3c1b9
[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" "c5b3475cc6fa07bd5a4deb4b0077fe769f3c11005e1d9d30710ceb31fdb3c1b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c5b3475cc6fa07bd5a4deb4b0077fe769f3c11005e1d9d30710ceb31fdb3c1b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5b3475cc6fa07bd5a4deb4b0077fe769f3c11005e1d9d30710ceb31fdb3c1b9", kill_on_drop: false }`
[INFO] [stdout] c5b3475cc6fa07bd5a4deb4b0077fe769f3c11005e1d9d30710ceb31fdb3c1b9
[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=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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4df74a5294d96fdcaad2ad5e859ca89bc1e7346a58fa8d3a762243cd62dc34b6
[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" "4df74a5294d96fdcaad2ad5e859ca89bc1e7346a58fa8d3a762243cd62dc34b6", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.9
[INFO] [stderr]     Checking regex-syntax v0.3.1
[INFO] [stderr]     Checking mempool v0.3.1
[INFO] [stderr]     Checking utf8-ranges v0.1.3
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking rand v0.3.14
[INFO] [stderr]     Checking aho-corasick v0.5.1
[INFO] [stderr]     Checking regex v0.1.65
[INFO] [stderr]     Checking rust-mines v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.23s
[INFO] running `Command { std: "docker" "inspect" "4df74a5294d96fdcaad2ad5e859ca89bc1e7346a58fa8d3a762243cd62dc34b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4df74a5294d96fdcaad2ad5e859ca89bc1e7346a58fa8d3a762243cd62dc34b6", kill_on_drop: false }`
[INFO] [stdout] 4df74a5294d96fdcaad2ad5e859ca89bc1e7346a58fa8d3a762243cd62dc34b6