[INFO] fetching crate ndless-async 0.1.2...
[INFO] checking ndless-async-0.1.2 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate ndless-async 0.1.2 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate ndless-async 0.1.2 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 ndless-async 0.1.2
[INFO] finished tweaking crates.io crate ndless-async 0.1.2
[INFO] tweaked toml for crates.io crate ndless-async 0.1.2 written to /workspace/builds/worker-4-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]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 27 packages to latest compatible versions
[INFO] [stderr]       Adding cfg-if v0.1.10 (available: v1.0.0)
[INFO] [stderr]       Adding crossbeam-queue v0.2.3 (available: v0.3.11)
[INFO] [stderr]       Adding crossbeam-utils v0.7.2 (available: v0.8.20)
[INFO] [stderr]       Adding cstr_core v0.1.2 (available: v0.2.6)
[INFO] [stderr]       Adding cty v0.1.5 (available: v0.2.2)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.77)
[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] [stderr]     Blocking waiting for file lock on package cache
[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] 1671a3beb26f768864079c2cc9b28ad904b37100ce9832a25fdaec94ea7155ec
[INFO] running `Command { std: "docker" "start" "-a" "1671a3beb26f768864079c2cc9b28ad904b37100ce9832a25fdaec94ea7155ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1671a3beb26f768864079c2cc9b28ad904b37100ce9832a25fdaec94ea7155ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1671a3beb26f768864079c2cc9b28ad904b37100ce9832a25fdaec94ea7155ec", kill_on_drop: false }`
[INFO] [stdout] 1671a3beb26f768864079c2cc9b28ad904b37100ce9832a25fdaec94ea7155ec
[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] 8d9ce7aad7247c0f2c9f900d83de4b1a26ec0bee34199b2073e076294670d8cf
[INFO] running `Command { std: "docker" "start" "-a" "8d9ce7aad7247c0f2c9f900d83de4b1a26ec0bee34199b2073e076294670d8cf", kill_on_drop: false }`
[INFO] [stderr]     Checking cty v0.2.2
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking cty v0.1.5
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]     Checking ignore-result v0.2.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]     Checking ndless-static-vars v2.1.0
[INFO] [stderr]     Checking ndless-sys v0.2.0
[INFO] [stderr]    Compiling ndless-macros v0.4.0
[INFO] [stderr]     Checking cstr_core v0.1.2
[INFO] [stderr]     Checking cstr_core v0.2.6
[INFO] [stderr]     Checking embedded-ffi v0.1.2
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking ndless v0.8.8
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking ndless-async v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `wake_trait` has been stable since 1.51.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:93:12
[INFO] [stdout]    |
[INFO] [stdout] 93 | #![feature(wake_trait)]
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `wake_trait` has been stable since 1.51.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:93:12
[INFO] [stdout]    |
[INFO] [stdout] 93 | #![feature(wake_trait)]
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.02s
[INFO] running `Command { std: "docker" "inspect" "8d9ce7aad7247c0f2c9f900d83de4b1a26ec0bee34199b2073e076294670d8cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d9ce7aad7247c0f2c9f900d83de4b1a26ec0bee34199b2073e076294670d8cf", kill_on_drop: false }`
[INFO] [stdout] 8d9ce7aad7247c0f2c9f900d83de4b1a26ec0bee34199b2073e076294670d8cf