[INFO] fetching crate buf-read-ext 0.4.0...
[INFO] checking buf-read-ext-0.4.0 against try#07fecb9cf34c4979a772ba38c99d6d9144768413 for pr-87710
[INFO] extracting crate buf-read-ext 0.4.0 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate buf-read-ext 0.4.0 on toolchain 07fecb9cf34c4979a772ba38c99d6d9144768413
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate buf-read-ext 0.4.0
[INFO] finished tweaking crates.io crate buf-read-ext 0.4.0
[INFO] tweaked toml for crates.io crate buf-read-ext 0.4.0 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 726f27623fa6c1bf14d7c4a59d7687fcc01eab34f8fb15752a42a3cb481413a2
[INFO] running `Command { std: "docker" "start" "-a" "726f27623fa6c1bf14d7c4a59d7687fcc01eab34f8fb15752a42a3cb481413a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "726f27623fa6c1bf14d7c4a59d7687fcc01eab34f8fb15752a42a3cb481413a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "726f27623fa6c1bf14d7c4a59d7687fcc01eab34f8fb15752a42a3cb481413a2", kill_on_drop: false }`
[INFO] [stdout] 726f27623fa6c1bf14d7c4a59d7687fcc01eab34f8fb15752a42a3cb481413a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b688dcbe2ffb047487bc2fb7ad174841f41f974d2be6b05f3bd63d3511b3fe11
[INFO] running `Command { std: "docker" "start" "-a" "b688dcbe2ffb047487bc2fb7ad174841f41f974d2be6b05f3bd63d3511b3fe11", kill_on_drop: false }`
[INFO] [stderr]     Checking buf-read-ext v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "b688dcbe2ffb047487bc2fb7ad174841f41f974d2be6b05f3bd63d3511b3fe11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b688dcbe2ffb047487bc2fb7ad174841f41f974d2be6b05f3bd63d3511b3fe11", kill_on_drop: false }`
[INFO] [stdout] b688dcbe2ffb047487bc2fb7ad174841f41f974d2be6b05f3bd63d3511b3fe11