[INFO] cloning repository https://github.com/conradlo/rusty-leetcode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/conradlo/rusty-leetcode" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconradlo%2Frusty-leetcode", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconradlo%2Frusty-leetcode'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e1bdc2d1f0a3911dbe0268932893cc60d69d526f
[INFO] checking conradlo/rusty-leetcode against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconradlo%2Frusty-leetcode" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/conradlo/rusty-leetcode on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/conradlo/rusty-leetcode
[INFO] finished tweaking git repo https://github.com/conradlo/rusty-leetcode
[INFO] tweaked toml for git repo https://github.com/conradlo/rusty-leetcode written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/conradlo/rusty-leetcode already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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] 3d768c72e8091f1dcaa5900d23d25811123752bd4177351516a765c6597e4ea6
[INFO] running `Command { std: "docker" "start" "-a" "3d768c72e8091f1dcaa5900d23d25811123752bd4177351516a765c6597e4ea6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3d768c72e8091f1dcaa5900d23d25811123752bd4177351516a765c6597e4ea6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d768c72e8091f1dcaa5900d23d25811123752bd4177351516a765c6597e4ea6", kill_on_drop: false }`
[INFO] [stdout] 3d768c72e8091f1dcaa5900d23d25811123752bd4177351516a765c6597e4ea6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e401c633272e2eaad75318c493d5b670151aa9a51ca2fbc984b1ed3fb3b4bba3
[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" "e401c633272e2eaad75318c493d5b670151aa9a51ca2fbc984b1ed3fb3b4bba3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling rusty-leetcode v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.33s
[INFO] running `Command { std: "docker" "inspect" "e401c633272e2eaad75318c493d5b670151aa9a51ca2fbc984b1ed3fb3b4bba3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e401c633272e2eaad75318c493d5b670151aa9a51ca2fbc984b1ed3fb3b4bba3", kill_on_drop: false }`
[INFO] [stdout] e401c633272e2eaad75318c493d5b670151aa9a51ca2fbc984b1ed3fb3b4bba3