[INFO] cloning repository https://github.com/liqargon/rust_c_compiler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/liqargon/rust_c_compiler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliqargon%2Frust_c_compiler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliqargon%2Frust_c_compiler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9b6f772396a3c6766c114a68dff3d9e0e2cd1195
[INFO] checking liqargon/rust_c_compiler against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliqargon%2Frust_c_compiler" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/liqargon/rust_c_compiler
[INFO] finished tweaking git repo https://github.com/liqargon/rust_c_compiler
[INFO] tweaked toml for git repo https://github.com/liqargon/rust_c_compiler written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/liqargon/rust_c_compiler on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/liqargon/rust_c_compiler 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" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f070d9e4c7b0ae81b858a5b325d67d63a640a35a126e4546c5f8e96be8e98cc0
[INFO] running `Command { std: "docker" "start" "-a" "f070d9e4c7b0ae81b858a5b325d67d63a640a35a126e4546c5f8e96be8e98cc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f070d9e4c7b0ae81b858a5b325d67d63a640a35a126e4546c5f8e96be8e98cc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f070d9e4c7b0ae81b858a5b325d67d63a640a35a126e4546c5f8e96be8e98cc0", kill_on_drop: false }`
[INFO] [stdout] f070d9e4c7b0ae81b858a5b325d67d63a640a35a126e4546c5f8e96be8e98cc0
[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=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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6dfd3bc2d2885bb4b0c88c2d3bacb580db8bb9935ce77a344b28001d5f39bedb
[INFO] running `Command { std: "docker" "start" "-a" "6dfd3bc2d2885bb4b0c88c2d3bacb580db8bb9935ce77a344b28001d5f39bedb", kill_on_drop: false }`
[INFO] [stderr]     Checking rcc1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]  --> src/lib.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     use super::*;
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]   --> src/codegen.rs:20:31
[INFO] [stdout]    |
[INFO] [stdout] 20 |         if let Node::Number { val } = *e_st {
[INFO] [stdout]    |                               ^^^ help: try ignoring the field: `val: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]   --> src/codegen.rs:20:31
[INFO] [stdout]    |
[INFO] [stdout] 20 |         if let Node::Number { val } = *e_st {
[INFO] [stdout]    |                               ^^^ help: try ignoring the field: `val: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/parse.rs:382:49
[INFO] [stdout]     |
[INFO] [stdout] 382 |     let first_token = (&tokens).first().unwrap().clone();
[INFO] [stdout]     |                                                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `token::Token` does not implement `Clone`, so calling `clone` on `&token::Token` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 382 -     let first_token = (&tokens).first().unwrap().clone();
[INFO] [stdout] 382 +     let first_token = (&tokens).first().unwrap();
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `token::Token`, implement `Clone` for it
[INFO] [stdout]    --> src/token.rs:28:1
[INFO] [stdout]     |
[INFO] [stdout]  28 + #[derive(Clone)]
[INFO] [stdout]  29 | pub enum Token {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/parse.rs:382:49
[INFO] [stdout]     |
[INFO] [stdout] 382 |     let first_token = (&tokens).first().unwrap().clone();
[INFO] [stdout]     |                                                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `token::Token` does not implement `Clone`, so calling `clone` on `&token::Token` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 382 -     let first_token = (&tokens).first().unwrap().clone();
[INFO] [stdout] 382 +     let first_token = (&tokens).first().unwrap();
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `token::Token`, implement `Clone` for it
[INFO] [stdout]    --> src/token.rs:28:1
[INFO] [stdout]     |
[INFO] [stdout]  28 + #[derive(Clone)]
[INFO] [stdout]  29 | pub enum Token {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "6dfd3bc2d2885bb4b0c88c2d3bacb580db8bb9935ce77a344b28001d5f39bedb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6dfd3bc2d2885bb4b0c88c2d3bacb580db8bb9935ce77a344b28001d5f39bedb", kill_on_drop: false }`
[INFO] [stdout] 6dfd3bc2d2885bb4b0c88c2d3bacb580db8bb9935ce77a344b28001d5f39bedb