[INFO] fetching crate xml2json-rs 1.0.1...
[INFO] checking xml2json-rs-1.0.1 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate xml2json-rs 1.0.1 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate xml2json-rs 1.0.1 on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate xml2json-rs 1.0.1
[INFO] finished tweaking crates.io crate xml2json-rs 1.0.1
[INFO] tweaked toml for crates.io crate xml2json-rs 1.0.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 23 packages to latest compatible versions
[INFO] [stderr]       Adding indoc v1.0.9 (available: v2.0.5)
[INFO] [stderr]       Adding quick-xml v0.23.1 (available: v0.36.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f71b40dfc1f8b6ee650079f94042c999fcd3c6d2b8c70e932b36be200e1227c6
[INFO] running `Command { std: "docker" "start" "-a" "f71b40dfc1f8b6ee650079f94042c999fcd3c6d2b8c70e932b36be200e1227c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f71b40dfc1f8b6ee650079f94042c999fcd3c6d2b8c70e932b36be200e1227c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f71b40dfc1f8b6ee650079f94042c999fcd3c6d2b8c70e932b36be200e1227c6", kill_on_drop: false }`
[INFO] [stdout] f71b40dfc1f8b6ee650079f94042c999fcd3c6d2b8c70e932b36be200e1227c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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 -Dtail_expr_drop_order" "-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3a52e69568c7a1f2d2f18bd2c1681ac2d86e7e8958dffe7f2527d3eca5ff269f
[INFO] running `Command { std: "docker" "start" "-a" "3a52e69568c7a1f2d2f18bd2c1681ac2d86e7e8958dffe7f2527d3eca5ff269f", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]    Compiling serde v1.0.210
[INFO] [stderr]     Checking regex-syntax v0.8.4
[INFO] [stderr]    Compiling serde_json v1.0.128
[INFO] [stderr]     Checking equivalent v1.0.1
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]     Checking itoa v1.0.11
[INFO] [stderr]     Checking ryu v1.0.18
[INFO] [stderr]     Checking yansi v1.0.1
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking diff v0.1.13
[INFO] [stderr]    Compiling indoc v1.0.9
[INFO] [stderr]     Checking pretty_assertions v1.4.1
[INFO] [stderr]     Checking indexmap v2.5.0
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking quick-xml v0.23.1
[INFO] [stderr]     Checking regex-automata v0.4.7
[INFO] [stderr]     Checking regex v1.10.6
[INFO] [stderr]     Checking xml2json-rs v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/json.rs:400:17
[INFO] [stdout]     |
[INFO] [stdout] 400 |     if let Some(mut last_node) = stack.last_mut() {
[INFO] [stdout]     |                 ----^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/json.rs:400:17
[INFO] [stdout]     |
[INFO] [stdout] 400 |     if let Some(mut last_node) = stack.last_mut() {
[INFO] [stdout]     |                 ----^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.75s
[INFO] running `Command { std: "docker" "inspect" "3a52e69568c7a1f2d2f18bd2c1681ac2d86e7e8958dffe7f2527d3eca5ff269f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a52e69568c7a1f2d2f18bd2c1681ac2d86e7e8958dffe7f2527d3eca5ff269f", kill_on_drop: false }`
[INFO] [stdout] 3a52e69568c7a1f2d2f18bd2c1681ac2d86e7e8958dffe7f2527d3eca5ff269f