[INFO] cloning repository https://github.com/ylcnky/dena
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ylcnky/dena" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fylcnky%2Fdena", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fylcnky%2Fdena'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e09a902277fb34d784dfcb0c1819e5b6e3247f88
[INFO] checking ylcnky/dena against master#40daf23eeb711dadf140b2536e67e3ff4c999196 for pr-142287
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fylcnky%2Fdena" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ylcnky/dena on toolchain 40daf23eeb711dadf140b2536e67e3ff4c999196
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+40daf23eeb711dadf140b2536e67e3ff4c999196" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ylcnky/dena
[INFO] finished tweaking git repo https://github.com/ylcnky/dena
[INFO] tweaked toml for git repo https://github.com/ylcnky/dena written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ylcnky/dena 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" "+40daf23eeb711dadf140b2536e67e3ff4c999196" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+40daf23eeb711dadf140b2536e67e3ff4c999196" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2db4e2791ac3796d53bb04bca0feccfca396b45f31bd3527a650e466c5231680
[INFO] running `Command { std: "docker" "start" "-a" "2db4e2791ac3796d53bb04bca0feccfca396b45f31bd3527a650e466c5231680", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2db4e2791ac3796d53bb04bca0feccfca396b45f31bd3527a650e466c5231680", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2db4e2791ac3796d53bb04bca0feccfca396b45f31bd3527a650e466c5231680", kill_on_drop: false }`
[INFO] [stdout] 2db4e2791ac3796d53bb04bca0feccfca396b45f31bd3527a650e466c5231680
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+40daf23eeb711dadf140b2536e67e3ff4c999196" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9be8c86cd0e24a2f809368a2d1c2e8c1a4af3c8036c5114da6aaa122105bece1
[INFO] running `Command { std: "docker" "start" "-a" "9be8c86cd0e24a2f809368a2d1c2e8c1a4af3c8036c5114da6aaa122105bece1", kill_on_drop: false }`
[INFO] [stderr]     Checking dena v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `paren` is never read
[INFO] [stdout]    --> src/expr.rs:241:9
[INFO] [stdout]     |
[INFO] [stdout] 239 |     AnonFunction {
[INFO] [stdout]     |     ------------ field in this variant
[INFO] [stdout] 240 |         id: usize,
[INFO] [stdout] 241 |         paren: Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expr` has a derived impl for the trait `Clone`, 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: field `paren` is never read
[INFO] [stdout]    --> src/expr.rs:261:9
[INFO] [stdout]     |
[INFO] [stdout] 257 |     Call {
[INFO] [stdout]     |     ---- field in this variant
[INFO] [stdout] ...
[INFO] [stdout] 261 |         paren: Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expr` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `keyword` is never read
[INFO] [stdout]   --> src/stmt.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     ReturnStmt {
[INFO] [stdout]    |     ---------- field in this variant
[INFO] [stdout] 43 |         keyword: Token,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Stmt` 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: field `paren` is never read
[INFO] [stdout]    --> src/expr.rs:241:9
[INFO] [stdout]     |
[INFO] [stdout] 239 |     AnonFunction {
[INFO] [stdout]     |     ------------ field in this variant
[INFO] [stdout] 240 |         id: usize,
[INFO] [stdout] 241 |         paren: Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expr` has a derived impl for the trait `Clone`, 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: field `paren` is never read
[INFO] [stdout]    --> src/expr.rs:261:9
[INFO] [stdout]     |
[INFO] [stdout] 257 |     Call {
[INFO] [stdout]     |     ---- field in this variant
[INFO] [stdout] ...
[INFO] [stdout] 261 |         paren: Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expr` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `keyword` is never read
[INFO] [stdout]   --> src/stmt.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     ReturnStmt {
[INFO] [stdout]    |     ---------- field in this variant
[INFO] [stdout] 43 |         keyword: Token,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Stmt` 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: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]   --> src/tests/mod.rs:57:32
[INFO] [stdout]    |
[INFO] [stdout] 57 |             test_code.push(line.clone());
[INFO] [stdout]    |                                ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "9be8c86cd0e24a2f809368a2d1c2e8c1a4af3c8036c5114da6aaa122105bece1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9be8c86cd0e24a2f809368a2d1c2e8c1a4af3c8036c5114da6aaa122105bece1", kill_on_drop: false }`
[INFO] [stdout] 9be8c86cd0e24a2f809368a2d1c2e8c1a4af3c8036c5114da6aaa122105bece1