[INFO] fetching crate aliri_braid_impl 0.4.0...
[INFO] checking aliri_braid_impl-0.4.0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate aliri_braid_impl 0.4.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate aliri_braid_impl 0.4.0 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 aliri_braid_impl 0.4.0
[INFO] finished tweaking crates.io crate aliri_braid_impl 0.4.0
[INFO] tweaked toml for crates.io crate aliri_braid_impl 0.4.0 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 13 packages to latest compatible versions
[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] 83e6f767cf6a0f3f27acfa36bdc0676bb6dfcb0aef3f1f842179d1db8562be23
[INFO] running `Command { std: "docker" "start" "-a" "83e6f767cf6a0f3f27acfa36bdc0676bb6dfcb0aef3f1f842179d1db8562be23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "83e6f767cf6a0f3f27acfa36bdc0676bb6dfcb0aef3f1f842179d1db8562be23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83e6f767cf6a0f3f27acfa36bdc0676bb6dfcb0aef3f1f842179d1db8562be23", kill_on_drop: false }`
[INFO] [stdout] 83e6f767cf6a0f3f27acfa36bdc0676bb6dfcb0aef3f1f842179d1db8562be23
[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] 2c05fe901bf60391a77db806a44b38c9de7ff69832a9e73fe66285342d8eab07
[INFO] running `Command { std: "docker" "start" "-a" "2c05fe901bf60391a77db806a44b38c9de7ff69832a9e73fe66285342d8eab07", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]     Checking unicode-ident v1.0.13
[INFO] [stderr]    Compiling serde v1.0.210
[INFO] [stderr]    Compiling serde_json v1.0.128
[INFO] [stderr]     Checking yansi v1.0.1
[INFO] [stderr]     Checking ryu v1.0.18
[INFO] [stderr]     Checking itoa v1.0.11
[INFO] [stderr]     Checking diff v0.1.13
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking pretty_assertions v1.4.1
[INFO] [stderr]     Checking quote v1.0.37
[INFO] [stderr]     Checking syn v2.0.77
[INFO] [stderr]     Checking aliri_braid_impl v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `common_attrs` is never read
[INFO] [stdout]  --> src/codegen/owned.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct OwnedCodeGen<'a> {
[INFO] [stdout]   |            ------------ field in this struct
[INFO] [stdout] 6 |     pub common_attrs: &'a [syn::Attribute],
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout]   |
[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]    Compiling serde_derive v1.0.210
[INFO] [stdout] warning: field `common_attrs` is never read
[INFO] [stdout]  --> src/codegen/owned.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct OwnedCodeGen<'a> {
[INFO] [stdout]   |            ------------ field in this struct
[INFO] [stdout] 6 |     pub common_attrs: &'a [syn::Attribute],
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout]   |
[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 14.18s
[INFO] running `Command { std: "docker" "inspect" "2c05fe901bf60391a77db806a44b38c9de7ff69832a9e73fe66285342d8eab07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c05fe901bf60391a77db806a44b38c9de7ff69832a9e73fe66285342d8eab07", kill_on_drop: false }`
[INFO] [stdout] 2c05fe901bf60391a77db806a44b38c9de7ff69832a9e73fe66285342d8eab07