[INFO] cloning repository https://github.com/xcaptain/rust-algorithms
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xcaptain/rust-algorithms" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxcaptain%2Frust-algorithms", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxcaptain%2Frust-algorithms'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 06f3acd4a1b58800cc612c64f2591432865c57aa
[INFO] checking xcaptain/rust-algorithms against try#15a786332e2f0dd343b226ab6bb8ec028a350f73 for pr-81782
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxcaptain%2Frust-algorithms" "/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/xcaptain/rust-algorithms on toolchain 15a786332e2f0dd343b226ab6bb8ec028a350f73
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/xcaptain/rust-algorithms
[INFO] finished tweaking git repo https://github.com/xcaptain/rust-algorithms
[INFO] tweaked toml for git repo https://github.com/xcaptain/rust-algorithms written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/xcaptain/rust-algorithms already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded regex v1.1.4
[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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "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] 7b4930a9731463aeceacae67698f839b29dc627d577d01236d47937b5e7ae240
[INFO] running `Command { std: "docker" "start" "-a" "7b4930a9731463aeceacae67698f839b29dc627d577d01236d47937b5e7ae240", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7b4930a9731463aeceacae67698f839b29dc627d577d01236d47937b5e7ae240", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b4930a9731463aeceacae67698f839b29dc627d577d01236d47937b5e7ae240", kill_on_drop: false }`
[INFO] [stdout] 7b4930a9731463aeceacae67698f839b29dc627d577d01236d47937b5e7ae240
[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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3dc557417d0ca13ae458db3b3801066054c297a1e5711451a5b4a04acead81e5
[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" "3dc557417d0ca13ae458db3b3801066054c297a1e5711451a5b4a04acead81e5", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]     Checking algorithms v0.1.0 (/opt/rustwide/workdir/algorithms)
[INFO] [stderr]    Compiling regex v1.1.4
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]     Checking codeforces v0.1.0 (/opt/rustwide/workdir/codeforces)
[INFO] [stderr]     Checking cc150 v0.1.0 (/opt/rustwide/workdir/cc150)
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking regex-syntax v0.6.6
[INFO] [stderr]     Checking leetcode v0.1.0 (/opt/rustwide/workdir/leetcode)
[INFO] [stderr]     Checking project-euler v0.1.0 (/opt/rustwide/workdir/project-euler)
[INFO] [stderr]     Checking aho-corasick v0.7.3
[INFO] [stderr]     Checking data-structures v0.1.0 (/opt/rustwide/workdir/data-structures)
[INFO] [stderr]     Checking dailycoding v0.1.0 (/opt/rustwide/workdir/dailycoding)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.72s
[INFO] running `Command { std: "docker" "inspect" "3dc557417d0ca13ae458db3b3801066054c297a1e5711451a5b4a04acead81e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3dc557417d0ca13ae458db3b3801066054c297a1e5711451a5b4a04acead81e5", kill_on_drop: false }`
[INFO] [stdout] 3dc557417d0ca13ae458db3b3801066054c297a1e5711451a5b4a04acead81e5