[INFO] fetching crate stutter 0.1.0...
[INFO] checking stutter-0.1.0 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] extracting crate stutter 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate stutter 0.1.0
[INFO] finished tweaking crates.io crate stutter 0.1.0
[INFO] tweaked toml for crates.io crate stutter 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate stutter 0.1.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] abb36b148a4cdc3fd75265dc8bb820b2c8bfaf2bb9fdd301e5ce237a0278d76c
[INFO] running `Command { std: "docker" "start" "-a" "abb36b148a4cdc3fd75265dc8bb820b2c8bfaf2bb9fdd301e5ce237a0278d76c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "abb36b148a4cdc3fd75265dc8bb820b2c8bfaf2bb9fdd301e5ce237a0278d76c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abb36b148a4cdc3fd75265dc8bb820b2c8bfaf2bb9fdd301e5ce237a0278d76c", kill_on_drop: false }`
[INFO] [stdout] abb36b148a4cdc3fd75265dc8bb820b2c8bfaf2bb9fdd301e5ce237a0278d76c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] ad6b14b18a88ef6ad59e8f61c40eb8690642a39796b1941c68bd4917466513c0
[INFO] running `Command { std: "docker" "start" "-a" "ad6b14b18a88ef6ad59e8f61c40eb8690642a39796b1941c68bd4917466513c0", kill_on_drop: false }`
[INFO] [stderr]     Checking stutter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> tests/expr.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |     for i in 0..n {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `BoolLiteral`, `Variable`, `Add`, and `Sub` are never constructed
[INFO] [stdout]   --> tests/expr.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout]  7 | enum Expr {
[INFO] [stdout]    |      ---- variants in this enum
[INFO] [stdout]  8 |     IntLiteral(i64),
[INFO] [stdout]  9 |     BoolLiteral(bool),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 10 |     Variable(String),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 11 |     Add(Box<Expr>, Box<Expr>),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 12 |     Sub(Box<Expr>, Box<Expr>),
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `set` is never used
[INFO] [stdout]   --> tests/expr.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl Environment {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub fn set(&mut self, var: String, value: Value) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "ad6b14b18a88ef6ad59e8f61c40eb8690642a39796b1941c68bd4917466513c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad6b14b18a88ef6ad59e8f61c40eb8690642a39796b1941c68bd4917466513c0", kill_on_drop: false }`
[INFO] [stdout] ad6b14b18a88ef6ad59e8f61c40eb8690642a39796b1941c68bd4917466513c0