[INFO] fetching crate pu_hongch 0.1.0...
[INFO] building pu_hongch-0.1.0 against try#8b8eff55bd72abbb57167bc42222a7f91d41cb0d for pr-142134-abi-ast-error
[INFO] extracting crate pu_hongch 0.1.0 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate pu_hongch 0.1.0 on toolchain 8b8eff55bd72abbb57167bc42222a7f91d41cb0d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pu_hongch 0.1.0
[INFO] finished tweaking crates.io crate pu_hongch 0.1.0
[INFO] tweaked toml for crates.io crate pu_hongch 0.1.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate pu_hongch 0.1.0 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" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5af22abc426264372860609835320e8fffda5c5a610f0c94d2d5e48cf622cd8c
[INFO] running `Command { std: "docker" "start" "-a" "5af22abc426264372860609835320e8fffda5c5a610f0c94d2d5e48cf622cd8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5af22abc426264372860609835320e8fffda5c5a610f0c94d2d5e48cf622cd8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5af22abc426264372860609835320e8fffda5c5a610f0c94d2d5e48cf622cd8c", kill_on_drop: false }`
[INFO] [stdout] 5af22abc426264372860609835320e8fffda5c5a610f0c94d2d5e48cf622cd8c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8eeba281482a9756ff7b953b8b7d58e671c8661f16d5db03064ded6dd5208bd5
[INFO] running `Command { std: "docker" "start" "-a" "8eeba281482a9756ff7b953b8b7d58e671c8661f16d5db03064ded6dd5208bd5", kill_on_drop: false }`
[INFO] [stderr]    Compiling pu_hongch v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `c1`
[INFO] [stdout]   --> src/lib.rs:22:17
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn  mix(c1:PrimaryColor, c2:PrimaryColor) -> SecondaryColor {
[INFO] [stdout]    |                 ^^ help: if this is intentional, prefix it with an underscore: `_c1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c2`
[INFO] [stdout]   --> src/lib.rs:22:34
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn  mix(c1:PrimaryColor, c2:PrimaryColor) -> SecondaryColor {
[INFO] [stdout]    |                                  ^^ help: if this is intentional, prefix it with an underscore: `_c2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "8eeba281482a9756ff7b953b8b7d58e671c8661f16d5db03064ded6dd5208bd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8eeba281482a9756ff7b953b8b7d58e671c8661f16d5db03064ded6dd5208bd5", kill_on_drop: false }`
[INFO] [stdout] 8eeba281482a9756ff7b953b8b7d58e671c8661f16d5db03064ded6dd5208bd5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 22dcd842e055470512a67901046d4af35d4d9e733c8886facdc0ca41f2262d59
[INFO] running `Command { std: "docker" "start" "-a" "22dcd842e055470512a67901046d4af35d4d9e733c8886facdc0ca41f2262d59", kill_on_drop: false }`
[INFO] [stderr]    Compiling pu_hongch v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `c1`
[INFO] [stdout]   --> src/lib.rs:22:17
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn  mix(c1:PrimaryColor, c2:PrimaryColor) -> SecondaryColor {
[INFO] [stdout]    |                 ^^ help: if this is intentional, prefix it with an underscore: `_c1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c2`
[INFO] [stdout]   --> src/lib.rs:22:34
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn  mix(c1:PrimaryColor, c2:PrimaryColor) -> SecondaryColor {
[INFO] [stdout]    |                                  ^^ help: if this is intentional, prefix it with an underscore: `_c2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c1`
[INFO] [stdout]   --> src/lib.rs:22:17
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn  mix(c1:PrimaryColor, c2:PrimaryColor) -> SecondaryColor {
[INFO] [stdout]    |                 ^^ help: if this is intentional, prefix it with an underscore: `_c1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c2`
[INFO] [stdout]   --> src/lib.rs:22:34
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn  mix(c1:PrimaryColor, c2:PrimaryColor) -> SecondaryColor {
[INFO] [stdout]    |                                  ^^ help: if this is intentional, prefix it with an underscore: `_c2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "22dcd842e055470512a67901046d4af35d4d9e733c8886facdc0ca41f2262d59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22dcd842e055470512a67901046d4af35d4d9e733c8886facdc0ca41f2262d59", kill_on_drop: false }`
[INFO] [stdout] 22dcd842e055470512a67901046d4af35d4d9e733c8886facdc0ca41f2262d59