[INFO] cloning repository https://github.com/jgsn13/rust-frequency-analysis
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jgsn13/rust-frequency-analysis" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjgsn13%2Frust-frequency-analysis", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjgsn13%2Frust-frequency-analysis'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a168e9d953d5295ed652ea09fd8698246236cbb2
[INFO] checking jgsn13/rust-frequency-analysis against try#4907eac94165faff6c5e5e015670b1c584275f7b for pr-154149
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjgsn13%2Frust-frequency-analysis" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jgsn13/rust-frequency-analysis
[INFO] finished tweaking git repo https://github.com/jgsn13/rust-frequency-analysis
[INFO] tweaked toml for git repo https://github.com/jgsn13/rust-frequency-analysis written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jgsn13/rust-frequency-analysis on toolchain 4907eac94165faff6c5e5e015670b1c584275f7b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4907eac94165faff6c5e5e015670b1c584275f7b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jgsn13/rust-frequency-analysis already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4907eac94165faff6c5e5e015670b1c584275f7b" "fetch" "--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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+4907eac94165faff6c5e5e015670b1c584275f7b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ea9a29966fe91bcfd6970f2f6c9381f3958853e88720b3b05aaa572e0b3f54de
[INFO] running `Command { std: "docker" "start" "-a" "ea9a29966fe91bcfd6970f2f6c9381f3958853e88720b3b05aaa572e0b3f54de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ea9a29966fe91bcfd6970f2f6c9381f3958853e88720b3b05aaa572e0b3f54de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea9a29966fe91bcfd6970f2f6c9381f3958853e88720b3b05aaa572e0b3f54de", kill_on_drop: false }`
[INFO] [stdout] ea9a29966fe91bcfd6970f2f6c9381f3958853e88720b3b05aaa572e0b3f54de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+4907eac94165faff6c5e5e015670b1c584275f7b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bc8585c0f95a9269b98247c086757605b5f4e5c1be63094a91a9b1ac68115c4a
[INFO] running `Command { std: "docker" "start" "-a" "bc8585c0f95a9269b98247c086757605b5f4e5c1be63094a91a9b1ac68115c4a", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-frequency-analysis v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "bc8585c0f95a9269b98247c086757605b5f4e5c1be63094a91a9b1ac68115c4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc8585c0f95a9269b98247c086757605b5f4e5c1be63094a91a9b1ac68115c4a", kill_on_drop: false }`
[INFO] [stdout] bc8585c0f95a9269b98247c086757605b5f4e5c1be63094a91a9b1ac68115c4a