[INFO] fetching crate simple_peg 0.3.0...
[INFO] testing simple_peg-0.3.0 against master#ec6f9a5b4413f74386267ef8efc93712c2ce6db6 for pr-155739-1
[INFO] extracting crate simple_peg 0.3.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate simple_peg 0.3.0
[INFO] finished tweaking crates.io crate simple_peg 0.3.0
[INFO] tweaked toml for crates.io crate simple_peg 0.3.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate simple_peg 0.3.0 on toolchain ec6f9a5b4413f74386267ef8efc93712c2ce6db6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate simple_peg 0.3.0 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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d076861fae4621b9e321755ac79cb30ba9131010999061cfcd9a84a91d911b83
[INFO] running `Command { std: "docker" "start" "-a" "d076861fae4621b9e321755ac79cb30ba9131010999061cfcd9a84a91d911b83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d076861fae4621b9e321755ac79cb30ba9131010999061cfcd9a84a91d911b83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d076861fae4621b9e321755ac79cb30ba9131010999061cfcd9a84a91d911b83", kill_on_drop: false }`
[INFO] [stdout] d076861fae4621b9e321755ac79cb30ba9131010999061cfcd9a84a91d911b83
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] abc6b6d84938241bcc1de555c0401d7d891c58185eaaffc2da7a02df9ede35c6
[INFO] running `Command { std: "docker" "start" "-a" "abc6b6d84938241bcc1de555c0401d7d891c58185eaaffc2da7a02df9ede35c6", kill_on_drop: false }`
[INFO] [stderr]    Compiling simple_peg v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/peg.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]   --> src/peg.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/peg.rs:205:9
[INFO] [stdout]     |
[INFO] [stdout] 205 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]    --> src/peg.rs:205:9
[INFO] [stdout]     |
[INFO] [stdout] 205 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/peg.rs:670:9
[INFO] [stdout]     |
[INFO] [stdout] 670 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]    --> src/peg.rs:670:9
[INFO] [stdout]     |
[INFO] [stdout] 670 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/peg.rs:714:9
[INFO] [stdout]     |
[INFO] [stdout] 714 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]    --> src/peg.rs:714:9
[INFO] [stdout]     |
[INFO] [stdout] 714 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/peg.rs:1034:9
[INFO] [stdout]      |
[INFO] [stdout] 1034 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]      |         ----^^^^^
[INFO] [stdout]      |         |
[INFO] [stdout]      |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]     --> src/peg.rs:1034:9
[INFO] [stdout]      |
[INFO] [stdout] 1034 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]      |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/peg.rs:1286:9
[INFO] [stdout]      |
[INFO] [stdout] 1286 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]      |         ----^^^^^
[INFO] [stdout]      |         |
[INFO] [stdout]      |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]     --> src/peg.rs:1286:9
[INFO] [stdout]      |
[INFO] [stdout] 1286 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]      |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/peg.rs:1341:9
[INFO] [stdout]      |
[INFO] [stdout] 1341 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]      |         ----^^^^^
[INFO] [stdout]      |         |
[INFO] [stdout]      |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]     --> src/peg.rs:1341:9
[INFO] [stdout]      |
[INFO] [stdout] 1341 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]      |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/peg.rs:1396:9
[INFO] [stdout]      |
[INFO] [stdout] 1396 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]      |         ----^^^^^
[INFO] [stdout]      |         |
[INFO] [stdout]      |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]     --> src/peg.rs:1396:9
[INFO] [stdout]      |
[INFO] [stdout] 1396 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]      |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/peg.rs:1542:9
[INFO] [stdout]      |
[INFO] [stdout] 1542 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]      |         ----^^^^^
[INFO] [stdout]      |         |
[INFO] [stdout]      |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]     --> src/peg.rs:1542:9
[INFO] [stdout]      |
[INFO] [stdout] 1542 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]      |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `memo`
[INFO] [stdout]    --> src/utils.rs:144:5
[INFO] [stdout]     |
[INFO] [stdout] 144 |     memo: &'a Memo<String>,
[INFO] [stdout]     |     ^^^^ help: if this is intentional, prefix it with an underscore: `_memo`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "abc6b6d84938241bcc1de555c0401d7d891c58185eaaffc2da7a02df9ede35c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abc6b6d84938241bcc1de555c0401d7d891c58185eaaffc2da7a02df9ede35c6", kill_on_drop: false }`
[INFO] [stdout] abc6b6d84938241bcc1de555c0401d7d891c58185eaaffc2da7a02df9ede35c6
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6147080db24cc755cd8b3cc32f6a74c39602547007f8a3880712180fae67371
[INFO] running `Command { std: "docker" "start" "-a" "e6147080db24cc755cd8b3cc32f6a74c39602547007f8a3880712180fae67371", kill_on_drop: false }`
[INFO] [stderr]    Compiling simple_peg v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/peg.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]   --> src/peg.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/peg.rs:205:9
[INFO] [stdout]     |
[INFO] [stdout] 205 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]    --> src/peg.rs:205:9
[INFO] [stdout]     |
[INFO] [stdout] 205 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/peg.rs:670:9
[INFO] [stdout]     |
[INFO] [stdout] 670 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]    --> src/peg.rs:670:9
[INFO] [stdout]     |
[INFO] [stdout] 670 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/peg.rs:714:9
[INFO] [stdout]     |
[INFO] [stdout] 714 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]    --> src/peg.rs:714:9
[INFO] [stdout]     |
[INFO] [stdout] 714 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/peg.rs:1034:9
[INFO] [stdout]      |
[INFO] [stdout] 1034 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]      |         ----^^^^^
[INFO] [stdout]      |         |
[INFO] [stdout]      |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]     --> src/peg.rs:1034:9
[INFO] [stdout]      |
[INFO] [stdout] 1034 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]      |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/peg.rs:1286:9
[INFO] [stdout]      |
[INFO] [stdout] 1286 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]      |         ----^^^^^
[INFO] [stdout]      |         |
[INFO] [stdout]      |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]     --> src/peg.rs:1286:9
[INFO] [stdout]      |
[INFO] [stdout] 1286 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]      |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/peg.rs:1341:9
[INFO] [stdout]      |
[INFO] [stdout] 1341 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]      |         ----^^^^^
[INFO] [stdout]      |         |
[INFO] [stdout]      |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]     --> src/peg.rs:1341:9
[INFO] [stdout]      |
[INFO] [stdout] 1341 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]      |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/peg.rs:1396:9
[INFO] [stdout]      |
[INFO] [stdout] 1396 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]      |         ----^^^^^
[INFO] [stdout]      |         |
[INFO] [stdout]      |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]     --> src/peg.rs:1396:9
[INFO] [stdout]      |
[INFO] [stdout] 1396 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]      |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/peg.rs:1542:9
[INFO] [stdout]      |
[INFO] [stdout] 1542 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]      |         ----^^^^^
[INFO] [stdout]      |         |
[INFO] [stdout]      |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]     --> src/peg.rs:1542:9
[INFO] [stdout]      |
[INFO] [stdout] 1542 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stdout]      |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `memo`
[INFO] [stdout]    --> src/utils.rs:144:5
[INFO] [stdout]     |
[INFO] [stdout] 144 |     memo: &'a Memo<String>,
[INFO] [stdout]     |     ^^^^ help: if this is intentional, prefix it with an underscore: `_memo`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "e6147080db24cc755cd8b3cc32f6a74c39602547007f8a3880712180fae67371", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6147080db24cc755cd8b3cc32f6a74c39602547007f8a3880712180fae67371", kill_on_drop: false }`
[INFO] [stdout] e6147080db24cc755cd8b3cc32f6a74c39602547007f8a3880712180fae67371
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4fd069fe3a4bba9234a2965eef1ad1cc9ee07c3cdec9c2c4881c0aeee1810e67
[INFO] running `Command { std: "docker" "start" "-a" "4fd069fe3a4bba9234a2965eef1ad1cc9ee07c3cdec9c2c4881c0aeee1810e67", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/peg.rs:91:9
[INFO] [stderr]    |
[INFO] [stderr] 91 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stderr]    |         ----^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stack`
[INFO] [stderr]   --> src/peg.rs:91:9
[INFO] [stderr]    |
[INFO] [stderr] 91 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stderr]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/peg.rs:205:9
[INFO] [stderr]     |
[INFO] [stderr] 205 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stderr]     |         ----^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stack`
[INFO] [stderr]    --> src/peg.rs:205:9
[INFO] [stderr]     |
[INFO] [stderr] 205 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stderr]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/peg.rs:670:9
[INFO] [stderr]     |
[INFO] [stderr] 670 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stderr]     |         ----^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stack`
[INFO] [stderr]    --> src/peg.rs:670:9
[INFO] [stderr]     |
[INFO] [stderr] 670 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stderr]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/peg.rs:714:9
[INFO] [stderr]     |
[INFO] [stderr] 714 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stderr]     |         ----^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stack`
[INFO] [stderr]    --> src/peg.rs:714:9
[INFO] [stderr]     |
[INFO] [stderr] 714 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stderr]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/peg.rs:1034:9
[INFO] [stderr]      |
[INFO] [stderr] 1034 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stderr]      |         ----^^^^^
[INFO] [stderr]      |         |
[INFO] [stderr]      |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stack`
[INFO] [stderr]     --> src/peg.rs:1034:9
[INFO] [stderr]      |
[INFO] [stderr] 1034 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stderr]      |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/peg.rs:1286:9
[INFO] [stderr]      |
[INFO] [stderr] 1286 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stderr]      |         ----^^^^^
[INFO] [stderr]      |         |
[INFO] [stderr]      |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stack`
[INFO] [stderr]     --> src/peg.rs:1286:9
[INFO] [stderr]      |
[INFO] [stderr] 1286 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stderr]      |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/peg.rs:1341:9
[INFO] [stderr]      |
[INFO] [stderr] 1341 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stderr]      |         ----^^^^^
[INFO] [stderr]      |         |
[INFO] [stderr]      |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stack`
[INFO] [stderr]     --> src/peg.rs:1341:9
[INFO] [stderr]      |
[INFO] [stderr] 1341 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stderr]      |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/peg.rs:1396:9
[INFO] [stderr]      |
[INFO] [stderr] 1396 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stderr]      |         ----^^^^^
[INFO] [stderr]      |         |
[INFO] [stderr]      |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stack`
[INFO] [stderr]     --> src/peg.rs:1396:9
[INFO] [stderr]      |
[INFO] [stderr] 1396 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stderr]      |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/peg.rs:1542:9
[INFO] [stderr]      |
[INFO] [stderr] 1542 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stderr]      |         ----^^^^^
[INFO] [stderr]      |         |
[INFO] [stderr]      |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stack`
[INFO] [stderr]     --> src/peg.rs:1542:9
[INFO] [stderr]      |
[INFO] [stderr] 1542 |     let mut stack: Vec<Option<State<String>>> = Vec::new();
[INFO] [stderr]      |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `memo`
[INFO] [stderr]    --> src/utils.rs:144:5
[INFO] [stderr]     |
[INFO] [stderr] 144 |     memo: &'a Memo<String>,
[INFO] [stderr]     |     ^^^^ help: if this is intentional, prefix it with an underscore: `_memo`
[INFO] [stderr] 
[INFO] [stderr] warning: `simple_peg` (bin "simple_peg" test) generated 19 warnings (run `cargo fix --bin "simple_peg" -p simple_peg --tests` to apply 19 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/simple_peg-de8286fb11a4cc80)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4fd069fe3a4bba9234a2965eef1ad1cc9ee07c3cdec9c2c4881c0aeee1810e67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fd069fe3a4bba9234a2965eef1ad1cc9ee07c3cdec9c2c4881c0aeee1810e67", kill_on_drop: false }`
[INFO] [stdout] 4fd069fe3a4bba9234a2965eef1ad1cc9ee07c3cdec9c2c4881c0aeee1810e67
