[INFO] fetching crate showdown 0.26.0...
[INFO] checking showdown-0.26.0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate showdown 0.26.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate showdown 0.26.0 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 showdown 0.26.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate showdown 0.26.0
[INFO] tweaked toml for crates.io crate showdown 0.26.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate showdown 0.26.0 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" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] c65a1a3a3e4e5afdb33f866be503ff7a4d730d47e7677bc101b5ded84935cc37
[INFO] running `Command { std: "docker" "start" "-a" "c65a1a3a3e4e5afdb33f866be503ff7a4d730d47e7677bc101b5ded84935cc37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c65a1a3a3e4e5afdb33f866be503ff7a4d730d47e7677bc101b5ded84935cc37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c65a1a3a3e4e5afdb33f866be503ff7a4d730d47e7677bc101b5ded84935cc37", kill_on_drop: false }`
[INFO] [stdout] c65a1a3a3e4e5afdb33f866be503ff7a4d730d47e7677bc101b5ded84935cc37
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 5a8e37b486694345c3d1be48024578e5029283256763cedcad080a1232156a52
[INFO] running `Command { std: "docker" "start" "-a" "5a8e37b486694345c3d1be48024578e5029283256763cedcad080a1232156a52", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.148
[INFO] [stderr]    Compiling proc-macro2 v1.0.67
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]     Checking cfg-if v1.0.0
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[INFO] [stderr]    Compiling futures-core v0.3.28
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[INFO] [stderr]    Compiling futures-task v0.3.28
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[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling version_check v0.9.4
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[INFO] [stderr]    Compiling openssl v0.10.57
[INFO] [stderr]     Checking memchr v2.6.3
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[INFO] [stderr]    Compiling cc v1.0.83
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[INFO] [stderr]     Checking tokio v1.32.0
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[INFO] [stderr]     Checking reqwest v0.11.20
[INFO] [stderr]     Checking showdown v0.26.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/message.rs:451:36
[INFO] [stdout]     |
[INFO] [stdout] 451 | pub struct UnrecognizedMessage<'a>(&'a str);
[INFO] [stdout]     |            -------------------     ^^^^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `UnrecognizedMessage` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/message.rs:451:36
[INFO] [stdout]     |
[INFO] [stdout] 451 | pub struct UnrecognizedMessage<'a>(&'a str);
[INFO] [stdout]     |            -------------------     ^^^^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `UnrecognizedMessage` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` 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 25.40s
[INFO] running `Command { std: "docker" "inspect" "5a8e37b486694345c3d1be48024578e5029283256763cedcad080a1232156a52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a8e37b486694345c3d1be48024578e5029283256763cedcad080a1232156a52", kill_on_drop: false }`
[INFO] [stdout] 5a8e37b486694345c3d1be48024578e5029283256763cedcad080a1232156a52