[INFO] fetching crate listenfd 1.0.2...
[INFO] checking listenfd-1.0.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate listenfd 1.0.2 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate listenfd 1.0.2
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate listenfd 1.0.2
[INFO] tweaked toml for crates.io crate listenfd 1.0.2 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate listenfd 1.0.2 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate listenfd 1.0.2 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c41e8865e2081db98a9e38226c65db79148bfd5aaddb2c9cdfe501bfd9395ef1
[INFO] running `Command { std: "docker" "start" "-a" "c41e8865e2081db98a9e38226c65db79148bfd5aaddb2c9cdfe501bfd9395ef1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c41e8865e2081db98a9e38226c65db79148bfd5aaddb2c9cdfe501bfd9395ef1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c41e8865e2081db98a9e38226c65db79148bfd5aaddb2c9cdfe501bfd9395ef1", kill_on_drop: false }`
[INFO] [stdout] c41e8865e2081db98a9e38226c65db79148bfd5aaddb2c9cdfe501bfd9395ef1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bbaf2315af47987d5c0e59eb1844271161291860a1132b39f01bbab34ba2b7bf
[INFO] running `Command { std: "docker" "start" "-a" "bbaf2315af47987d5c0e59eb1844271161291860a1132b39f01bbab34ba2b7bf", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.85
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]     Checking getrandom v0.2.4
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]    Compiling futures-util v0.3.19
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]     Checking sha-1 v0.9.8
[INFO] [stderr]    Compiling futures-channel v0.3.19
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking tracing v0.1.29
[INFO] [stderr]    Compiling mime_guess v2.0.3
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking fastrand v1.6.0
[INFO] [stderr]    Compiling serde_json v1.0.74
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]     Checking buf_redux v0.8.4
[INFO] [stderr]     Checking headers-core v0.2.0
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking twoway v0.1.8
[INFO] [stderr]     Checking headers v0.3.5
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]     Checking listenfd v1.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking multipart v0.18.0
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling pin-project-internal v1.0.10
[INFO] [stderr]     Checking tokio v1.15.0
[INFO] [stderr]     Checking pin-project v1.0.10
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking tungstenite v0.14.0
[INFO] [stderr]     Checking tokio-util v0.6.9
[INFO] [stderr]     Checking tokio-stream v0.1.8
[INFO] [stderr]     Checking tokio-tungstenite v0.15.0
[INFO] [stderr]     Checking h2 v0.3.10
[INFO] [stderr]     Checking hyper v0.14.16
[INFO] [stderr]     Checking warp v0.3.2
[INFO] [stdout] error: this type will no longer be must used: Result<warp::filter::service::FilteredService<warp::filter::map::Map<impl warp::Filter + warp::filter::FilterBase<Extract = (), Error = Infallible> + Copy, {closure@examples/demo.rs:18:34: 18:36}>>, Infallible>
[INFO] [stdout]   --> examples/demo.rs:25:70
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let make_svc = hyper::service::make_service_fn(|_: _| async move { Ok::<_, Infallible>(svc) });
[INFO] [stdout]    |                                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<warp::filter::service::FilteredService<warp::filter::map::Map<impl warp::Filter + warp::filter::FilterBase<Extract = (), Error = Infallible> + Copy, {closure@examples/demo.rs:18:34: 18:36}>>, Infallible>
[INFO] [stdout]   --> examples/demo.rs:25:72
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let make_svc = hyper::service::make_service_fn(|_: _| async move { Ok::<_, Infallible>(svc) });
[INFO] [stdout]    |                                                                        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `listenfd` (example "demo") due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "bbaf2315af47987d5c0e59eb1844271161291860a1132b39f01bbab34ba2b7bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbaf2315af47987d5c0e59eb1844271161291860a1132b39f01bbab34ba2b7bf", kill_on_drop: false }`
[INFO] [stdout] bbaf2315af47987d5c0e59eb1844271161291860a1132b39f01bbab34ba2b7bf