[INFO] fetching crate arc-fmt 0.1.0...
[INFO] checking arc-fmt-0.1.0 against 895980e0290783bb09b1ccf1b11f14eb09b10430 for pr-160186
[INFO] extracting crate arc-fmt 0.1.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate arc-fmt 0.1.0
[INFO] finished tweaking crates.io crate arc-fmt 0.1.0
[INFO] tweaked toml for crates.io crate arc-fmt 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate arc-fmt 0.1.0 on toolchain 895980e0290783bb09b1ccf1b11f14eb09b10430
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+895980e0290783bb09b1ccf1b11f14eb09b10430" "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" "+895980e0290783bb09b1ccf1b11f14eb09b10430" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 15 packages to highest compatible versions
[INFO] [stderr]       Adding psm v0.1.24 (available: v0.1.32)
[INFO] [stderr]       Adding textwrap v0.11.0 (available: v0.16.4)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+895980e0290783bb09b1ccf1b11f14eb09b10430" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 4f5ac23afd70b1f2fc3cb671b391a563edbab9da585bcf0ff30d6cdb3a8fcfd9
[INFO] running `Command { std: "docker" "start" "4f5ac23afd70b1f2fc3cb671b391a563edbab9da585bcf0ff30d6cdb3a8fcfd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f5ac23afd70b1f2fc3cb671b391a563edbab9da585bcf0ff30d6cdb3a8fcfd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4f5ac23afd70b1f2fc3cb671b391a563edbab9da585bcf0ff30d6cdb3a8fcfd9" "/opt/rustwide/cargo-home/bin/cargo" "+895980e0290783bb09b1ccf1b11f14eb09b10430" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f5ac23afd70b1f2fc3cb671b391a563edbab9da585bcf0ff30d6cdb3a8fcfd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4f5ac23afd70b1f2fc3cb671b391a563edbab9da585bcf0ff30d6cdb3a8fcfd9" "/opt/rustwide/cargo-home/bin/cargo" "+895980e0290783bb09b1ccf1b11f14eb09b10430" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling find-msvc-tools v0.1.14
[INFO] [stderr]    Compiling libc v0.2.191
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling cc v1.8.0
[INFO] [stderr]    Compiling psm v0.1.24
[INFO] [stderr]    Compiling stacker v0.1.25
[INFO] [stderr]     Checking pest v2.9.4
[INFO] [stderr]     Checking arc_parser v0.2.0
[INFO] [stderr]     Checking arc-fmt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `textwrap::indent`
[INFO] [stdout]  --> src/utils/mod.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use textwrap::indent;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `textwrap::indent`
[INFO] [stdout]  --> src/utils/mod.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use textwrap::indent;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/formatter.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let mut code = String::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: variable does not need to be mutable
[INFO] [stdout]    --> src/formatter.rs:200:13
[INFO] [stdout]     |
[INFO] [stdout] 200 |         let mut code = String::new();
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/formatter.rs:224:13
[INFO] [stdout]     |
[INFO] [stdout] 224 |         let mut code = String::new();
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `text` is never read
[INFO] [stdout]    --> src/formatter.rs:225:24
[INFO] [stdout]     |
[INFO] [stdout] 225 |         let mut text = String::new();
[INFO] [stdout]     |                        ^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 229 |                     text = pair.as_str().to_string();
[INFO] [stdout]     |                     ---- `text` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/formatter.rs:238:13
[INFO] [stdout]     |
[INFO] [stdout] 238 |         let mut code = String::new();
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/formatter.rs:239:13
[INFO] [stdout]     |
[INFO] [stdout] 239 |         let mut text = String::new();
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `text`
[INFO] [stdout]    --> src/formatter.rs:239:13
[INFO] [stdout]     |
[INFO] [stdout] 239 |         let mut text = String::new();
[INFO] [stdout]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_text`
[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/formatter.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let mut code = String::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: variable does not need to be mutable
[INFO] [stdout]    --> src/formatter.rs:200:13
[INFO] [stdout]     |
[INFO] [stdout] 200 |         let mut code = String::new();
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/formatter.rs:224:13
[INFO] [stdout]     |
[INFO] [stdout] 224 |         let mut code = String::new();
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `text` is never read
[INFO] [stdout]    --> src/formatter.rs:225:24
[INFO] [stdout]     |
[INFO] [stdout] 225 |         let mut text = String::new();
[INFO] [stdout]     |                        ^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 229 |                     text = pair.as_str().to_string();
[INFO] [stdout]     |                     ---- `text` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/formatter.rs:238:13
[INFO] [stdout]     |
[INFO] [stdout] 238 |         let mut code = String::new();
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/formatter.rs:239:13
[INFO] [stdout]     |
[INFO] [stdout] 239 |         let mut text = String::new();
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `text`
[INFO] [stdout]    --> src/formatter.rs:239:13
[INFO] [stdout]     |
[INFO] [stdout] 239 |         let mut text = String::new();
[INFO] [stdout]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_text`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> tests/do_fmt.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     s.format_file("tests/package.json", "tests/out/package.arc");
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let _ = s.format_file("tests/package.json", "tests/out/package.arc");
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> tests/do_fmt.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     s.format_file("tests/user_data.json", "tests/out/user_data.arc");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let _ = s.format_file("tests/user_data.json", "tests/out/user_data.arc");
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.34s
[INFO] running `Command { std: "docker" "inspect" "4f5ac23afd70b1f2fc3cb671b391a563edbab9da585bcf0ff30d6cdb3a8fcfd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f5ac23afd70b1f2fc3cb671b391a563edbab9da585bcf0ff30d6cdb3a8fcfd9", kill_on_drop: false }`
[INFO] [stdout] 4f5ac23afd70b1f2fc3cb671b391a563edbab9da585bcf0ff30d6cdb3a8fcfd9
