[INFO] fetching crate classfmt 0.3.0...
[INFO] checking classfmt-0.3.0 against master#3aedcf06b73fc36feeebca3d579e1d2a6c40acc5 for pr-65819
[INFO] extracting crate classfmt 0.3.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate classfmt 0.3.0 on toolchain 3aedcf06b73fc36feeebca3d579e1d2a6c40acc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate classfmt 0.3.0
[INFO] finished tweaking crates.io crate classfmt 0.3.0
[INFO] tweaked toml for crates.io crate classfmt 0.3.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate classfmt 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 867f92af502df825e862ab896ea3c537ac4e0791e9027edbac10d0fefb616d64
[INFO] running `Command { std: "docker" "start" "-a" "867f92af502df825e862ab896ea3c537ac4e0791e9027edbac10d0fefb616d64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "867f92af502df825e862ab896ea3c537ac4e0791e9027edbac10d0fefb616d64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "867f92af502df825e862ab896ea3c537ac4e0791e9027edbac10d0fefb616d64", kill_on_drop: false }`
[INFO] [stdout] 867f92af502df825e862ab896ea3c537ac4e0791e9027edbac10d0fefb616d64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 120cae8523e2caf7d2ad296b141fb5003379d4e4056ab5ceb6fc2bd875fb0c3d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "120cae8523e2caf7d2ad296b141fb5003379d4e4056ab5ceb6fc2bd875fb0c3d", kill_on_drop: false }`
[INFO] [stderr]     Checking classfmt v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `io`
[INFO] [stdout]    --> src/parser.rs:319:9
[INFO] [stdout]     |
[INFO] [stdout] 319 |         io,
[INFO] [stdout]     |         ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ConstantTag`
[INFO] [stdout]    --> src/parser.rs:325:42
[INFO] [stdout]     |
[INFO] [stdout] 325 |     use crate::constant_pool::{Constant, ConstantTag};
[INFO] [stdout]     |                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]    --> src/parser.rs:215:34
[INFO] [stdout]     |
[INFO] [stdout] 215 |                 &Constant::Utf8 {tag, length, bytes: s_bytes} => {
[INFO] [stdout]     |                                  ^^^ help: try ignoring the field: `tag: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `length`
[INFO] [stdout]    --> src/parser.rs:215:39
[INFO] [stdout]     |
[INFO] [stdout] 215 |                 &Constant::Utf8 {tag, length, bytes: s_bytes} => {
[INFO] [stdout]     |                                       ^^^^^^ help: try ignoring the field: `length: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]    --> src/parser.rs:348:33
[INFO] [stdout]     |
[INFO] [stdout] 348 |         if let Constant::Utf8 { tag, length, bytes } = constant {
[INFO] [stdout]     |                                 ^^^ help: try ignoring the field: `tag: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `length`
[INFO] [stdout]    --> src/parser.rs:348:38
[INFO] [stdout]     |
[INFO] [stdout] 348 |         if let Constant::Utf8 { tag, length, bytes } = constant {
[INFO] [stdout]     |                                      ^^^^^^ help: try ignoring the field: `length: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attribute_name_index`
[INFO] [stdout]    --> src/parser.rs:355:47
[INFO] [stdout]     |
[INFO] [stdout] 355 |             if let Attribute::ConstantValue { attribute_name_index, attribute_length, constantvalue_index } = attribute {
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^^^^^^^^ help: try ignoring the field: `attribute_name_index: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attribute_length`
[INFO] [stdout]    --> src/parser.rs:355:69
[INFO] [stdout]     |
[INFO] [stdout] 355 |             if let Attribute::ConstantValue { attribute_name_index, attribute_length, constantvalue_index } = attribute {
[INFO] [stdout]     |                                                                     ^^^^^^^^^^^^^^^^ help: try ignoring the field: `attribute_length: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]    --> src/parser.rs:358:43
[INFO] [stdout]     |
[INFO] [stdout] 358 |                 if let Constant::Integer {tag, value} = constant {
[INFO] [stdout]     |                                           ^^^ help: try ignoring the field: `tag: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]    --> src/parser.rs:215:34
[INFO] [stdout]     |
[INFO] [stdout] 215 |                 &Constant::Utf8 {tag, length, bytes: s_bytes} => {
[INFO] [stdout]     |                                  ^^^ help: try ignoring the field: `tag: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `length`
[INFO] [stdout]    --> src/parser.rs:215:39
[INFO] [stdout]     |
[INFO] [stdout] 215 |                 &Constant::Utf8 {tag, length, bytes: s_bytes} => {
[INFO] [stdout]     |                                       ^^^^^^ help: try ignoring the field: `length: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `Command { std: "docker" "inspect" "120cae8523e2caf7d2ad296b141fb5003379d4e4056ab5ceb6fc2bd875fb0c3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "120cae8523e2caf7d2ad296b141fb5003379d4e4056ab5ceb6fc2bd875fb0c3d", kill_on_drop: false }`
[INFO] [stdout] 120cae8523e2caf7d2ad296b141fb5003379d4e4056ab5ceb6fc2bd875fb0c3d