[INFO] cloning repository https://github.com/rolandvarga/linh
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rolandvarga/linh" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frolandvarga%2Flinh", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frolandvarga%2Flinh'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 74ace7b21dae01c4a69865d6bd4f6d418353dfb6
[INFO] building rolandvarga/linh against master#44f415c1d617ebc7b931a243b7b321ef8a6ca47c for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frolandvarga%2Flinh" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rolandvarga/linh on toolchain 44f415c1d617ebc7b931a243b7b321ef8a6ca47c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rolandvarga/linh
[INFO] finished tweaking git repo https://github.com/rolandvarga/linh
[INFO] tweaked toml for git repo https://github.com/rolandvarga/linh written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/rolandvarga/linh 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" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded comfy-table v6.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 97a420fff073c4b13db9bd10758017f1e42291ba6237deeab6da72ea04afa8ce
[INFO] running `Command { std: "docker" "start" "-a" "97a420fff073c4b13db9bd10758017f1e42291ba6237deeab6da72ea04afa8ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97a420fff073c4b13db9bd10758017f1e42291ba6237deeab6da72ea04afa8ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97a420fff073c4b13db9bd10758017f1e42291ba6237deeab6da72ea04afa8ce", kill_on_drop: false }`
[INFO] [stdout] 97a420fff073c4b13db9bd10758017f1e42291ba6237deeab6da72ea04afa8ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b994a8606984ca164cda415d1eeacdca7a898759b43c926292a168e789f7115a
[INFO] running `Command { std: "docker" "start" "-a" "b994a8606984ca164cda415d1eeacdca7a898759b43c926292a168e789f7115a", kill_on_drop: false }`
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[INFO] [stderr]    Compiling rusoto_s3 v0.48.0
[INFO] [stderr]    Compiling linh v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `collection`
[INFO] [stdout]   --> src/model/mod.rs:80:25
[INFO] [stdout]    |
[INFO] [stdout] 80 |                 let mut collection = match serde_json::from_str::<Collection>(&contents.as_str()) {
[INFO] [stdout]    |                         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_collection`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `collection`
[INFO] [stdout]    --> src/model/mod.rs:167:17
[INFO] [stdout]     |
[INFO] [stdout] 167 |         let mut collection = match serde_json::from_str::<Collection>(&contents.as_str()) {
[INFO] [stdout]     |                 ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_collection`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 49s
[INFO] running `Command { std: "docker" "inspect" "b994a8606984ca164cda415d1eeacdca7a898759b43c926292a168e789f7115a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b994a8606984ca164cda415d1eeacdca7a898759b43c926292a168e789f7115a", kill_on_drop: false }`
[INFO] [stdout] b994a8606984ca164cda415d1eeacdca7a898759b43c926292a168e789f7115a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 50755eb38dcc8e36bc2a66d981c0a8f4c71071055e2902f2148a064e764b512f
[INFO] running `Command { std: "docker" "start" "-a" "50755eb38dcc8e36bc2a66d981c0a8f4c71071055e2902f2148a064e764b512f", kill_on_drop: false }`
[INFO] [stderr]    Compiling linh v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `collection`
[INFO] [stdout]   --> src/model/mod.rs:80:25
[INFO] [stdout]    |
[INFO] [stdout] 80 |                 let mut collection = match serde_json::from_str::<Collection>(&contents.as_str()) {
[INFO] [stdout]    |                         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_collection`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `collection`
[INFO] [stdout]    --> src/model/mod.rs:167:17
[INFO] [stdout]     |
[INFO] [stdout] 167 |         let mut collection = match serde_json::from_str::<Collection>(&contents.as_str()) {
[INFO] [stdout]     |                 ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_collection`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `Command { std: "docker" "inspect" "50755eb38dcc8e36bc2a66d981c0a8f4c71071055e2902f2148a064e764b512f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50755eb38dcc8e36bc2a66d981c0a8f4c71071055e2902f2148a064e764b512f", kill_on_drop: false }`
[INFO] [stdout] 50755eb38dcc8e36bc2a66d981c0a8f4c71071055e2902f2148a064e764b512f