[INFO] cloning repository https://github.com/imtsuki/w
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/imtsuki/w" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimtsuki%2Fw", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimtsuki%2Fw'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 62684579f84b9d294f98105dbe2f68a244de3b17
[INFO] building imtsuki/w against master#44f415c1d617ebc7b931a243b7b321ef8a6ca47c for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimtsuki%2Fw" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/imtsuki/w 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/imtsuki/w
[INFO] finished tweaking git repo https://github.com/imtsuki/w
[INFO] tweaked toml for git repo https://github.com/imtsuki/w written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/imtsuki/w 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] 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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 395750bdf1d60b8daf908a265e9936f4c82bcc741aa0727d42cbdf146d9020a1
[INFO] running `Command { std: "docker" "start" "-a" "395750bdf1d60b8daf908a265e9936f4c82bcc741aa0727d42cbdf146d9020a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "395750bdf1d60b8daf908a265e9936f4c82bcc741aa0727d42cbdf146d9020a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "395750bdf1d60b8daf908a265e9936f4c82bcc741aa0727d42cbdf146d9020a1", kill_on_drop: false }`
[INFO] [stdout] 395750bdf1d60b8daf908a265e9936f4c82bcc741aa0727d42cbdf146d9020a1
[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=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] 346a6d8e7587ac1ca6ff4c6c6b3e4b02daeeeb531609f81d356033411c12670c
[INFO] running `Command { std: "docker" "start" "-a" "346a6d8e7587ac1ca6ff4c6c6b3e4b02daeeeb531609f81d356033411c12670c", kill_on_drop: false }`
[INFO] [stderr]    Compiling w v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum `Exp` is never used
[INFO] [stdout]  --> src/w.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | enum Exp {
[INFO] [stdout]   |      ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Exp` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Lit` is never used
[INFO] [stdout]   --> src/w.rs:20:6
[INFO] [stdout]    |
[INFO] [stdout] 20 | enum Lit {
[INFO] [stdout]    |      ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Lit` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Type` is never used
[INFO] [stdout]   --> src/w.rs:32:6
[INFO] [stdout]    |
[INFO] [stdout] 32 | enum Type {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Type` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Types` is never used
[INFO] [stdout]   --> src/w.rs:45:7
[INFO] [stdout]    |
[INFO] [stdout] 45 | trait Types {
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Subst` is never used
[INFO] [stdout]   --> src/w.rs:77:6
[INFO] [stdout]    |
[INFO] [stdout] 77 | type Subst = HashMap<String, Type>;
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "346a6d8e7587ac1ca6ff4c6c6b3e4b02daeeeb531609f81d356033411c12670c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "346a6d8e7587ac1ca6ff4c6c6b3e4b02daeeeb531609f81d356033411c12670c", kill_on_drop: false }`
[INFO] [stdout] 346a6d8e7587ac1ca6ff4c6c6b3e4b02daeeeb531609f81d356033411c12670c
[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=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] 4fa579c0ac4e41cb10e131c9dbb9d66d24e223e01d44e0273b0d67ba6086f1ef
[INFO] running `Command { std: "docker" "start" "-a" "4fa579c0ac4e41cb10e131c9dbb9d66d24e223e01d44e0273b0d67ba6086f1ef", kill_on_drop: false }`
[INFO] [stderr]    Compiling w v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum `Exp` is never used
[INFO] [stdout]  --> src/w.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | enum Exp {
[INFO] [stdout]   |      ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Exp` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Lit` is never used
[INFO] [stdout]   --> src/w.rs:20:6
[INFO] [stdout]    |
[INFO] [stdout] 20 | enum Lit {
[INFO] [stdout]    |      ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Lit` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Type` is never used
[INFO] [stdout]   --> src/w.rs:32:6
[INFO] [stdout]    |
[INFO] [stdout] 32 | enum Type {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Type` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Types` is never used
[INFO] [stdout]   --> src/w.rs:45:7
[INFO] [stdout]    |
[INFO] [stdout] 45 | trait Types {
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Subst` is never used
[INFO] [stdout]   --> src/w.rs:77:6
[INFO] [stdout]    |
[INFO] [stdout] 77 | type Subst = HashMap<String, Type>;
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "4fa579c0ac4e41cb10e131c9dbb9d66d24e223e01d44e0273b0d67ba6086f1ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fa579c0ac4e41cb10e131c9dbb9d66d24e223e01d44e0273b0d67ba6086f1ef", kill_on_drop: false }`
[INFO] [stdout] 4fa579c0ac4e41cb10e131c9dbb9d66d24e223e01d44e0273b0d67ba6086f1ef