[INFO] fetching crate blf_lib-derivable 1.15.7...
[INFO] checking blf_lib-derivable-1.15.7 against master#42f4793e5a514858221b07ac379029d90353913e for pr-148952
[INFO] extracting crate blf_lib-derivable 1.15.7 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate blf_lib-derivable 1.15.7
[INFO] finished tweaking crates.io crate blf_lib-derivable 1.15.7
[INFO] tweaked toml for crates.io crate blf_lib-derivable 1.15.7 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate blf_lib-derivable 1.15.7 on toolchain 42f4793e5a514858221b07ac379029d90353913e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+42f4793e5a514858221b07ac379029d90353913e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+42f4793e5a514858221b07ac379029d90353913e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 24 packages to latest compatible versions
[INFO] [stderr]       Adding binrw v0.14.1 (available: v0.15.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+42f4793e5a514858221b07ac379029d90353913e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded binrw_derive v0.14.1
[INFO] [stderr]   Downloaded binrw v0.14.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+42f4793e5a514858221b07ac379029d90353913e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 633f1d0581d090ab9f89ab12515f958f6de0775892cd1eae86226b06028ec4ad
[INFO] running `Command { std: "docker" "start" "-a" "633f1d0581d090ab9f89ab12515f958f6de0775892cd1eae86226b06028ec4ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "633f1d0581d090ab9f89ab12515f958f6de0775892cd1eae86226b06028ec4ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "633f1d0581d090ab9f89ab12515f958f6de0775892cd1eae86226b06028ec4ad", kill_on_drop: false }`
[INFO] [stdout] 633f1d0581d090ab9f89ab12515f958f6de0775892cd1eae86226b06028ec4ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+42f4793e5a514858221b07ac379029d90353913e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 14202d1516f9853b526eb44841f8b07527409bc4cbb8b060e056aa17a3ac5b35
[INFO] running `Command { std: "docker" "start" "-a" "14202d1516f9853b526eb44841f8b07527409bc4cbb8b060e056aa17a3ac5b35", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling binrw_derive v0.14.1
[INFO] [stderr]     Checking aho-corasick v1.1.4
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling binrw v0.14.1
[INFO] [stderr]     Checking csv-core v0.1.13
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking regex-automata v0.4.13
[INFO] [stderr]     Checking csv v1.4.0
[INFO] [stderr]     Checking serde_json v1.0.145
[INFO] [stderr]     Checking regex v1.12.2
[INFO] [stderr]     Checking blf_lib-derivable v1.15.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/blf/chunks.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/blf/chunks.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.45s
[INFO] running `Command { std: "docker" "inspect" "14202d1516f9853b526eb44841f8b07527409bc4cbb8b060e056aa17a3ac5b35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14202d1516f9853b526eb44841f8b07527409bc4cbb8b060e056aa17a3ac5b35", kill_on_drop: false }`
[INFO] [stdout] 14202d1516f9853b526eb44841f8b07527409bc4cbb8b060e056aa17a3ac5b35