[INFO] cloning repository https://github.com/bigdragon0610/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/bigdragon0610/diff_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fdiff_rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fdiff_rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8d1d65a061264e1197664450abc24aae04cd7a3d
[INFO] building bigdragon0610/diff_rs against try#8b8eff55bd72abbb57167bc42222a7f91d41cb0d for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fdiff_rs" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bigdragon0610/diff_rs 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 git repo https://github.com/bigdragon0610/diff_rs
[INFO] finished tweaking git repo https://github.com/bigdragon0610/diff_rs
[INFO] tweaked toml for git repo https://github.com/bigdragon0610/diff_rs written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/bigdragon0610/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" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] a6d92694e39f7ebfc0f1251e1a901a7e3b6a90de16fdd2ece13544ffce0500e3
[INFO] running `Command { std: "docker" "start" "-a" "a6d92694e39f7ebfc0f1251e1a901a7e3b6a90de16fdd2ece13544ffce0500e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a6d92694e39f7ebfc0f1251e1a901a7e3b6a90de16fdd2ece13544ffce0500e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6d92694e39f7ebfc0f1251e1a901a7e3b6a90de16fdd2ece13544ffce0500e3", kill_on_drop: false }`
[INFO] [stdout] a6d92694e39f7ebfc0f1251e1a901a7e3b6a90de16fdd2ece13544ffce0500e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] c309add36444ecd974e1e5c60961d38c8221f65dc6165d135334f0b39be23f79
[INFO] running `Command { std: "docker" "start" "-a" "c309add36444ecd974e1e5c60961d38c8221f65dc6165d135334f0b39be23f79", kill_on_drop: false }`
[INFO] [stderr]    Compiling diff_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type alias `Scaler` is never used
[INFO] [stdout]  --> src/main.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | type Scaler = isize;
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Base` is never used
[INFO] [stdout]  --> src/main.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | enum Base {
[INFO] [stdout]   |      ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Base` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `diff` is never used
[INFO] [stdout]   --> src/main.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl Base {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 17 |     fn diff(&self) -> Expression {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Add` is never used
[INFO] [stdout]   --> src/main.rs:31:6
[INFO] [stdout]    |
[INFO] [stdout] 31 | type Add = Vec<Expression>;
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Mul` is never used
[INFO] [stdout]   --> src/main.rs:32:6
[INFO] [stdout]    |
[INFO] [stdout] 32 | type Mul = Vec<Expression>;
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Expression` is never used
[INFO] [stdout]   --> src/main.rs:35:6
[INFO] [stdout]    |
[INFO] [stdout] 35 | enum Expression {
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Expression` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `diff` is never used
[INFO] [stdout]   --> src/main.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | impl Expression {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] 42 |     fn diff(&self) -> Expression {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `DiffBase` is never used
[INFO] [stdout]   --> src/main.rs:65:7
[INFO] [stdout]    |
[INFO] [stdout] 65 | trait DiffBase {
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `X` is never constructed
[INFO] [stdout]   --> src/main.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | struct X {}
[INFO] [stdout]    |        ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `X` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Exp` is never constructed
[INFO] [stdout]   --> src/main.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 | struct Exp {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Exp` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pow` is never constructed
[INFO] [stdout]   --> src/main.rs:93:8
[INFO] [stdout]    |
[INFO] [stdout] 93 | struct Pow {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Pow` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Log` is never constructed
[INFO] [stdout]    --> src/main.rs:112:8
[INFO] [stdout]     |
[INFO] [stdout] 112 | struct Log {
[INFO] [stdout]     |        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Log` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Sin` is never constructed
[INFO] [stdout]    --> src/main.rs:129:8
[INFO] [stdout]     |
[INFO] [stdout] 129 | struct Sin {
[INFO] [stdout]     |        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Sin` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cos` is never constructed
[INFO] [stdout]    --> src/main.rs:145:8
[INFO] [stdout]     |
[INFO] [stdout] 145 | struct Cos {
[INFO] [stdout]     |        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Cos` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tan` is never constructed
[INFO] [stdout]    --> src/main.rs:162:8
[INFO] [stdout]     |
[INFO] [stdout] 162 | struct Tan {
[INFO] [stdout]     |        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Tan` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "c309add36444ecd974e1e5c60961d38c8221f65dc6165d135334f0b39be23f79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c309add36444ecd974e1e5c60961d38c8221f65dc6165d135334f0b39be23f79", kill_on_drop: false }`
[INFO] [stdout] c309add36444ecd974e1e5c60961d38c8221f65dc6165d135334f0b39be23f79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 212b563f0d56cbfbfaa1226656de9a98fa098201e51e7dd2c3c6690b3e152b47
[INFO] running `Command { std: "docker" "start" "-a" "212b563f0d56cbfbfaa1226656de9a98fa098201e51e7dd2c3c6690b3e152b47", kill_on_drop: false }`
[INFO] [stderr] Error response from daemon: failed to create task for container: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: error during container init: error running prestart hook #0: exit status 1, stdout: , stderr: write /var/lib/docker/containers/212b563f0d56cbfbfaa1226656de9a98fa098201e51e7dd2c3c6690b3e152b47/hosts: no space left on device: unknown
[INFO] running `Command { std: "docker" "inspect" "212b563f0d56cbfbfaa1226656de9a98fa098201e51e7dd2c3c6690b3e152b47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "212b563f0d56cbfbfaa1226656de9a98fa098201e51e7dd2c3c6690b3e152b47", kill_on_drop: false }`
[INFO] [stdout] 212b563f0d56cbfbfaa1226656de9a98fa098201e51e7dd2c3c6690b3e152b47