[INFO] cloning repository https://github.com/mesaverde0207/toy-c-compiler-in-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mesaverde0207/toy-c-compiler-in-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmesaverde0207%2Ftoy-c-compiler-in-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmesaverde0207%2Ftoy-c-compiler-in-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e5cfe794d04bb0e1771d2b770b32a4fbf9d8e06d
[INFO] checking mesaverde0207/toy-c-compiler-in-rust against master#a9e7b30487235621751cc628f170c0f15fb215c4 for pr-136539
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmesaverde0207%2Ftoy-c-compiler-in-rust" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mesaverde0207/toy-c-compiler-in-rust on toolchain a9e7b30487235621751cc628f170c0f15fb215c4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a9e7b30487235621751cc628f170c0f15fb215c4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mesaverde0207/toy-c-compiler-in-rust
[INFO] finished tweaking git repo https://github.com/mesaverde0207/toy-c-compiler-in-rust
[INFO] tweaked toml for git repo https://github.com/mesaverde0207/toy-c-compiler-in-rust written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mesaverde0207/toy-c-compiler-in-rust 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" "+a9e7b30487235621751cc628f170c0f15fb215c4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+a9e7b30487235621751cc628f170c0f15fb215c4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 84b5529dc41910aa58f095e068891ce0b4a7eb368030d262acc0080097abaf6d
[INFO] running `Command { std: "docker" "start" "-a" "84b5529dc41910aa58f095e068891ce0b4a7eb368030d262acc0080097abaf6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84b5529dc41910aa58f095e068891ce0b4a7eb368030d262acc0080097abaf6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84b5529dc41910aa58f095e068891ce0b4a7eb368030d262acc0080097abaf6d", kill_on_drop: false }`
[INFO] [stdout] 84b5529dc41910aa58f095e068891ce0b4a7eb368030d262acc0080097abaf6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+a9e7b30487235621751cc628f170c0f15fb215c4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 665f6de9c40bde31d35bb81c61ab4031ade28aa3bd0be1b6bb8128fd43a0b9ae
[INFO] running `Command { std: "docker" "start" "-a" "665f6de9c40bde31d35bb81c61ab4031ade28aa3bd0be1b6bb8128fd43a0b9ae", kill_on_drop: false }`
[INFO] [stderr]     Checking toy-c-compiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]    --> src/tinyc/lexer.rs:108:48
[INFO] [stdout]     |
[INFO] [stdout] 34  | impl<'a> Tokenizer<'a> {
[INFO] [stdout]     |      -- lifetime `'a` declared here
[INFO] [stdout] ...
[INFO] [stdout] 108 |     fn new_empty(chars: PeekableString<'a>) -> Tokenizer {
[INFO] [stdout]     |                                                ^^^^^^^^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]    --> src/tinyc/lexer.rs:108:48
[INFO] [stdout]     |
[INFO] [stdout] 34  | impl<'a> Tokenizer<'a> {
[INFO] [stdout]     |      -- lifetime `'a` declared here
[INFO] [stdout] ...
[INFO] [stdout] 108 |     fn new_empty(chars: PeekableString<'a>) -> Tokenizer {
[INFO] [stdout]     |                                                ^^^^^^^^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `tree` is never read
[INFO] [stdout]   --> src/tinyc/parser.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub struct Parser<'a> {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 52 |     lexer: Tokenizer<'a>,
[INFO] [stdout] 53 |     tree: Tree,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Parser` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `tree` is never read
[INFO] [stdout]   --> src/tinyc/parser.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub struct Parser<'a> {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 52 |     lexer: Tokenizer<'a>,
[INFO] [stdout] 53 |     tree: Tree,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Parser` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "665f6de9c40bde31d35bb81c61ab4031ade28aa3bd0be1b6bb8128fd43a0b9ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "665f6de9c40bde31d35bb81c61ab4031ade28aa3bd0be1b6bb8128fd43a0b9ae", kill_on_drop: false }`
[INFO] [stdout] 665f6de9c40bde31d35bb81c61ab4031ade28aa3bd0be1b6bb8128fd43a0b9ae