[INFO] fetching crate len 0.2.0...
[INFO] checking len-0.2.0 against try#77ee4623672f6bca3e33ba60b6479de48d44b1f9 for pr-99217
[INFO] extracting crate len 0.2.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate len 0.2.0 on toolchain 77ee4623672f6bca3e33ba60b6479de48d44b1f9
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+77ee4623672f6bca3e33ba60b6479de48d44b1f9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate len 0.2.0
[INFO] finished tweaking crates.io crate len 0.2.0
[INFO] tweaked toml for crates.io crate len 0.2.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate len 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+77ee4623672f6bca3e33ba60b6479de48d44b1f9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:ecb52c4cf6672b83cc996368a05b4a059042425f2b6ba9cd23a06cdead5d8d70" "/opt/rustwide/cargo-home/bin/cargo" "+77ee4623672f6bca3e33ba60b6479de48d44b1f9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 75415724fb09c92687a9fc657e3686083076bcf9c64d3571d25bf095abcdc88c
[INFO] running `Command { std: "docker" "start" "-a" "75415724fb09c92687a9fc657e3686083076bcf9c64d3571d25bf095abcdc88c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75415724fb09c92687a9fc657e3686083076bcf9c64d3571d25bf095abcdc88c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75415724fb09c92687a9fc657e3686083076bcf9c64d3571d25bf095abcdc88c", kill_on_drop: false }`
[INFO] [stdout] 75415724fb09c92687a9fc657e3686083076bcf9c64d3571d25bf095abcdc88c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:ecb52c4cf6672b83cc996368a05b4a059042425f2b6ba9cd23a06cdead5d8d70" "/opt/rustwide/cargo-home/bin/cargo" "+77ee4623672f6bca3e33ba60b6479de48d44b1f9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 789ed2ac5a983ebc057d6d8cb327bdef9a5863aa654fb7e2f603f074b6ea57ed
[INFO] running `Command { std: "docker" "start" "-a" "789ed2ac5a983ebc057d6d8cb327bdef9a5863aa654fb7e2f603f074b6ea57ed", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]     Checking bytesize v1.0.0
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking len v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.14s
[INFO] running `Command { std: "docker" "inspect" "789ed2ac5a983ebc057d6d8cb327bdef9a5863aa654fb7e2f603f074b6ea57ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "789ed2ac5a983ebc057d6d8cb327bdef9a5863aa654fb7e2f603f074b6ea57ed", kill_on_drop: false }`
[INFO] [stdout] 789ed2ac5a983ebc057d6d8cb327bdef9a5863aa654fb7e2f603f074b6ea57ed