[INFO] cloning repository https://github.com/mrkgnao/cube20rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mrkgnao/cube20rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrkgnao%2Fcube20rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrkgnao%2Fcube20rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a67b1069f2f63ba7e11ed6521a75b507f575de47
[INFO] checking mrkgnao/cube20rust against master#4fa76a4a7742bb9c1febe33019f5a9e7e4839a65 for pr-83744
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrkgnao%2Fcube20rust" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mrkgnao/cube20rust on toolchain 4fa76a4a7742bb9c1febe33019f5a9e7e4839a65
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mrkgnao/cube20rust
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/mrkgnao/cube20rust
[INFO] tweaked toml for git repo https://github.com/mrkgnao/cube20rust written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/mrkgnao/cube20rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9b13ae5d37c12c6d72214a7641c00ffb807dfca4649502bc46aada35d90940a9
[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" "9b13ae5d37c12c6d72214a7641c00ffb807dfca4649502bc46aada35d90940a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9b13ae5d37c12c6d72214a7641c00ffb807dfca4649502bc46aada35d90940a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b13ae5d37c12c6d72214a7641c00ffb807dfca4649502bc46aada35d90940a9", kill_on_drop: false }`
[INFO] [stdout] 9b13ae5d37c12c6d72214a7641c00ffb807dfca4649502bc46aada35d90940a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1f2a18a70354594ce6ed913d06ceec224c5d09e9975e43d767919f6f4b080a12
[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" "1f2a18a70354594ce6ed913d06ceec224c5d09e9975e43d767919f6f4b080a12", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.12
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]     Checking radium v0.2.0
[INFO] [stderr]     Checking unicode-xid v0.2.0
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking diff v0.1.12
[INFO] [stderr]    Compiling proc-macro2 v1.0.7
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking colored v1.9.0
[INFO] [stderr]    Compiling bitvec v0.16.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]    Compiling bit_collection_derive v0.2.2
[INFO] [stderr]     Checking bit_collection v0.2.3
[INFO] [stderr]    Compiling alginate_cube v0.1.0 (/opt/rustwide/workdir/alginate_cube)
[INFO] [stderr]     Checking alginate v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking serde v1.0.104
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]     Checking toml v0.5.5
[INFO] [stderr]     Checking trybuild v1.0.19
[INFO] [stderr]     Checking macrotest v0.1.6
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 42.17s
[INFO] running `Command { std: "docker" "inspect" "1f2a18a70354594ce6ed913d06ceec224c5d09e9975e43d767919f6f4b080a12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f2a18a70354594ce6ed913d06ceec224c5d09e9975e43d767919f6f4b080a12", kill_on_drop: false }`
[INFO] [stdout] 1f2a18a70354594ce6ed913d06ceec224c5d09e9975e43d767919f6f4b080a12