[INFO] cloning repository https://github.com/mozilla-services/diff.rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mozilla-services/diff.rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmozilla-services%2Fdiff.rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmozilla-services%2Fdiff.rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 742079d53147d99645ff7581498c20013e6c06a4
[INFO] building mozilla-services/diff.rs against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmozilla-services%2Fdiff.rs" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mozilla-services/diff.rs
[INFO] finished tweaking git repo https://github.com/mozilla-services/diff.rs
[INFO] tweaked toml for git repo https://github.com/mozilla-services/diff.rs written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mozilla-services/diff.rs on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mozilla-services/diff.rs 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 835e52e1e989a5e0a7246acbaa9c8e9813a7ca24758aa8968c1deaab5d6b9e5e
[INFO] running `Command { std: "docker" "start" "-a" "835e52e1e989a5e0a7246acbaa9c8e9813a7ca24758aa8968c1deaab5d6b9e5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "835e52e1e989a5e0a7246acbaa9c8e9813a7ca24758aa8968c1deaab5d6b9e5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "835e52e1e989a5e0a7246acbaa9c8e9813a7ca24758aa8968c1deaab5d6b9e5e", kill_on_drop: false }`
[INFO] [stdout] 835e52e1e989a5e0a7246acbaa9c8e9813a7ca24758aa8968c1deaab5d6b9e5e
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b457e29014d345858fd4913498390394a52237c88e4556a26b5f91a95de3005
[INFO] running `Command { std: "docker" "start" "-a" "6b457e29014d345858fd4913498390394a52237c88e4556a26b5f91a95de3005", kill_on_drop: false }`
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[INFO] [stdout] warning: struct `CrateInfo` is never constructed
[INFO] [stdout]   --> src/data.rs:95:12
[INFO] [stdout]    |
[INFO] [stdout] 95 | pub struct CrateInfo {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 53s
[INFO] running `Command { std: "docker" "inspect" "6b457e29014d345858fd4913498390394a52237c88e4556a26b5f91a95de3005", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b457e29014d345858fd4913498390394a52237c88e4556a26b5f91a95de3005", kill_on_drop: false }`
[INFO] [stdout] 6b457e29014d345858fd4913498390394a52237c88e4556a26b5f91a95de3005
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b081e8e04c6dd15d39f15eb26d594e5004263c76e3fa57c69ac6bf5ce6bdb234
[INFO] running `Command { std: "docker" "start" "-a" "b081e8e04c6dd15d39f15eb26d594e5004263c76e3fa57c69ac6bf5ce6bdb234", kill_on_drop: false }`
[INFO] [stdout] warning: struct `CrateInfo` is never constructed
[INFO] [stdout]   --> src/data.rs:95:12
[INFO] [stdout]    |
[INFO] [stdout] 95 | pub struct CrateInfo {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling diff-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `CrateInfo` is never constructed
[INFO] [stdout]   --> src/data.rs:95:12
[INFO] [stdout]    |
[INFO] [stdout] 95 | pub struct CrateInfo {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 4.42s
[INFO] running `Command { std: "docker" "inspect" "b081e8e04c6dd15d39f15eb26d594e5004263c76e3fa57c69ac6bf5ce6bdb234", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b081e8e04c6dd15d39f15eb26d594e5004263c76e3fa57c69ac6bf5ce6bdb234", kill_on_drop: false }`
[INFO] [stdout] b081e8e04c6dd15d39f15eb26d594e5004263c76e3fa57c69ac6bf5ce6bdb234