[INFO] fetching crate minnow 0.1.0...
[INFO] checking minnow-0.1.0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate minnow 0.1.0 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate minnow 0.1.0 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 minnow 0.1.0
[INFO] finished tweaking crates.io crate minnow 0.1.0
[INFO] tweaked toml for crates.io crate minnow 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate crates.io crate minnow 0.1.0 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 29829045b7302ba9294a21c5cead590646cdb94339696699b0d22dae5ef0429d
[INFO] running `Command { std: "docker" "start" "-a" "29829045b7302ba9294a21c5cead590646cdb94339696699b0d22dae5ef0429d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "29829045b7302ba9294a21c5cead590646cdb94339696699b0d22dae5ef0429d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29829045b7302ba9294a21c5cead590646cdb94339696699b0d22dae5ef0429d", kill_on_drop: false }`
[INFO] [stdout] 29829045b7302ba9294a21c5cead590646cdb94339696699b0d22dae5ef0429d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 0eb5b695724431014e48d8d3d529b4afedce3deb0f3101ac9d9b8c9d9be6edda
[INFO] running `Command { std: "docker" "start" "-a" "0eb5b695724431014e48d8d3d529b4afedce3deb0f3101ac9d9b8c9d9be6edda", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling bitstream-io v1.2.0
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling darling_core v0.13.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling test-case v2.0.2
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling arithmetic-coding-core v0.3.0
[INFO] [stderr]    Compiling arithmetic-coding v0.3.0
[INFO] [stderr]    Compiling darling_macro v0.13.4
[INFO] [stderr]    Compiling darling v0.13.4
[INFO] [stderr]    Compiling minnow-derive v0.1.0
[INFO] [stderr]     Checking minnow v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `BoundedModel` is never used
[INFO] [stdout]  --> src/bounded_model.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait BoundedModel {
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Codec` is never used
[INFO] [stdout]   --> src/bounded_model.rs:14:11
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub trait Codec<M>
[INFO] [stdout]    |           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `BoundedModel` is never used
[INFO] [stdout]  --> src/bounded_model.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait BoundedModel {
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Codec` is never used
[INFO] [stdout]   --> src/bounded_model.rs:14:11
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub trait Codec<M>
[INFO] [stdout]    |           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.52s
[INFO] running `Command { std: "docker" "inspect" "0eb5b695724431014e48d8d3d529b4afedce3deb0f3101ac9d9b8c9d9be6edda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0eb5b695724431014e48d8d3d529b4afedce3deb0f3101ac9d9b8c9d9be6edda", kill_on_drop: false }`
[INFO] [stdout] 0eb5b695724431014e48d8d3d529b4afedce3deb0f3101ac9d9b8c9d9be6edda