[INFO] fetching crate mt-dom 0.59.2...
[INFO] checking mt-dom-0.59.2 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] extracting crate mt-dom 0.59.2 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate mt-dom 0.59.2 on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mt-dom 0.59.2
[INFO] finished tweaking crates.io crate mt-dom 0.59.2
[INFO] tweaked toml for crates.io crate mt-dom 0.59.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate mt-dom 0.59.2 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 81240240ee511a0833c26733521d765024d73f250467247932af8dd2f27ad864
[INFO] running `Command { std: "docker" "start" "-a" "81240240ee511a0833c26733521d765024d73f250467247932af8dd2f27ad864", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "81240240ee511a0833c26733521d765024d73f250467247932af8dd2f27ad864", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81240240ee511a0833c26733521d765024d73f250467247932af8dd2f27ad864", kill_on_drop: false }`
[INFO] [stdout] 81240240ee511a0833c26733521d765024d73f250467247932af8dd2f27ad864
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f1f555b7af351ad6fa4f5fe28f02683e7748d059f5c30e57fa19ca0ed6b0a43e
[INFO] running `Command { std: "docker" "start" "-a" "f1f555b7af351ad6fa4f5fe28f02683e7748d059f5c30e57fa19ca0ed6b0a43e", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking longest-increasing-subsequence v0.1.0
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking mt-dom v0.59.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking regex-automata v0.4.5
[INFO] [stderr]     Checking regex v1.10.3
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking pretty_env_logger v0.4.0
[INFO] [stdout] warning: unused import: `crate::*`
[INFO] [stdout]    --> tests/zipper.rs:111:9
[INFO] [stdout]     |
[INFO] [stdout] 111 |     use crate::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> examples/simple.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Callback(&'a dyn FnMut(usize) -> String),
[INFO] [stdout]   |     -------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Value` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Callback(()),
[INFO] [stdout]   |              ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `there_are_2_exact_same_keys_in_the_old` is never used
[INFO] [stdout]    --> tests/diff_keyed_test.rs:126:4
[INFO] [stdout]     |
[INFO] [stdout] 126 | fn there_are_2_exact_same_keys_in_the_old() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `there_are_2_exact_same_keys_in_the_new` is never used
[INFO] [stdout]    --> tests/diff_keyed_test.rs:165:4
[INFO] [stdout]     |
[INFO] [stdout] 165 | fn there_are_2_exact_same_keys_in_the_new() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `there_are_2_exact_same_keys_in_both_old_and_new` is never used
[INFO] [stdout]    --> tests/diff_keyed_test.rs:208:4
[INFO] [stdout]     |
[INFO] [stdout] 208 | fn there_are_2_exact_same_keys_in_both_old_and_new() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.35s
[INFO] running `Command { std: "docker" "inspect" "f1f555b7af351ad6fa4f5fe28f02683e7748d059f5c30e57fa19ca0ed6b0a43e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1f555b7af351ad6fa4f5fe28f02683e7748d059f5c30e57fa19ca0ed6b0a43e", kill_on_drop: false }`
[INFO] [stdout] f1f555b7af351ad6fa4f5fe28f02683e7748d059f5c30e57fa19ca0ed6b0a43e