[INFO] fetching crate classfmt 0.3.0...
[INFO] checking classfmt-0.3.0 against try#7b3565da729099dbe807466fcd118fb2815986e0 for pr-81789
[INFO] extracting crate classfmt 0.3.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate classfmt 0.3.0 on toolchain 7b3565da729099dbe807466fcd118fb2815986e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "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-1/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" "+7b3565da729099dbe807466fcd118fb2815986e0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8c35a0c9b6c4074efb0e0ef0c14182ad0087e1a784db2a969050b8276f739279
[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" "8c35a0c9b6c4074efb0e0ef0c14182ad0087e1a784db2a969050b8276f739279", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c35a0c9b6c4074efb0e0ef0c14182ad0087e1a784db2a969050b8276f739279", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c35a0c9b6c4074efb0e0ef0c14182ad0087e1a784db2a969050b8276f739279", kill_on_drop: false }`
[INFO] [stdout] 8c35a0c9b6c4074efb0e0ef0c14182ad0087e1a784db2a969050b8276f739279
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 75c27b27795383619765d9b54aa230ba5a674b8875460720d0fcd82c316088d2
[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" "75c27b27795383619765d9b54aa230ba5a674b8875460720d0fcd82c316088d2", 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 0.59s
[INFO] running `Command { std: "docker" "inspect" "75c27b27795383619765d9b54aa230ba5a674b8875460720d0fcd82c316088d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75c27b27795383619765d9b54aa230ba5a674b8875460720d0fcd82c316088d2", kill_on_drop: false }`
[INFO] [stdout] 75c27b27795383619765d9b54aa230ba5a674b8875460720d0fcd82c316088d2