[INFO] cloning repository https://github.com/jeff-yeung/huntTheWumpus
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jeff-yeung/huntTheWumpus" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeff-yeung%2FhuntTheWumpus", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeff-yeung%2FhuntTheWumpus'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6ff1be5ca0bce2f19aea7aea0b533370a8c60d8e
[INFO] checking jeff-yeung/huntTheWumpus against try#22dd2dd1dc07f63ae9394352d412f020d2985684 for pr-74627
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeff-yeung%2FhuntTheWumpus" "/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/jeff-yeung/huntTheWumpus on toolchain 22dd2dd1dc07f63ae9394352d412f020d2985684
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+22dd2dd1dc07f63ae9394352d412f020d2985684" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jeff-yeung/huntTheWumpus
[INFO] finished tweaking git repo https://github.com/jeff-yeung/huntTheWumpus
[INFO] tweaked toml for git repo https://github.com/jeff-yeung/huntTheWumpus written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/jeff-yeung/huntTheWumpus already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+22dd2dd1dc07f63ae9394352d412f020d2985684" "fetch" "--locked" "--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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+22dd2dd1dc07f63ae9394352d412f020d2985684" "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] 7643fb1b040fd6be0c9a7b66d95d8b1ad3914b9bf058aa0d6132bc492dfef1a6
[INFO] running `Command { std: "docker" "start" "-a" "7643fb1b040fd6be0c9a7b66d95d8b1ad3914b9bf058aa0d6132bc492dfef1a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7643fb1b040fd6be0c9a7b66d95d8b1ad3914b9bf058aa0d6132bc492dfef1a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7643fb1b040fd6be0c9a7b66d95d8b1ad3914b9bf058aa0d6132bc492dfef1a6", kill_on_drop: false }`
[INFO] [stdout] 7643fb1b040fd6be0c9a7b66d95d8b1ad3914b9bf058aa0d6132bc492dfef1a6
[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" "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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+22dd2dd1dc07f63ae9394352d412f020d2985684" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f96aa9c52cdfd32768eea5ce8b52557ba3374875bc83ecdd27f6fe69f8be8ad8
[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" "f96aa9c52cdfd32768eea5ce8b52557ba3374875bc83ecdd27f6fe69f8be8ad8", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling cc v1.0.41
[INFO] [stderr]    Compiling itoa v0.4.4
[INFO] [stderr]    Compiling stdweb-internal-runtime v0.1.4
[INFO] [stderr]    Compiling sha1 v0.6.0
[INFO] [stderr]    Compiling proc-macro-nested v0.1.3
[INFO] [stderr]    Compiling base-x v0.2.5
[INFO] [stderr]     Checking discard v1.0.4
[INFO] [stderr]    Compiling yew v0.8.0
[INFO] [stderr]    Compiling boolinator v2.4.0
[INFO] [stderr]     Checking anymap v0.12.1
[INFO] [stderr]    Compiling yew-macro v0.8.0
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling stdweb v0.4.18
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling proc-macro-hack v0.5.9
[INFO] [stderr]    Compiling serde v1.0.99
[INFO] [stderr]     Checking bincode v1.0.1
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]     Checking backtrace v0.3.35
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling serde_json v1.0.40
[INFO] [stderr]    Compiling stdweb-internal-macros v0.2.7
[INFO] [stderr]    Compiling stdweb-derive v0.5.1
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking hunt_the_wumpus v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 01s
[INFO] running `Command { std: "docker" "inspect" "f96aa9c52cdfd32768eea5ce8b52557ba3374875bc83ecdd27f6fe69f8be8ad8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f96aa9c52cdfd32768eea5ce8b52557ba3374875bc83ecdd27f6fe69f8be8ad8", kill_on_drop: false }`
[INFO] [stdout] f96aa9c52cdfd32768eea5ce8b52557ba3374875bc83ecdd27f6fe69f8be8ad8