[INFO] cloning repository https://github.com/Artem-Zhdanov/axum-async-stream
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Artem-Zhdanov/axum-async-stream" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArtem-Zhdanov%2Faxum-async-stream", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArtem-Zhdanov%2Faxum-async-stream'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 71733098133a260215644280ae4083e9506a4824
[INFO] checking Artem-Zhdanov/axum-async-stream against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArtem-Zhdanov%2Faxum-async-stream" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Artem-Zhdanov/axum-async-stream
[INFO] finished tweaking git repo https://github.com/Artem-Zhdanov/axum-async-stream
[INFO] tweaked toml for git repo https://github.com/Artem-Zhdanov/axum-async-stream written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Artem-Zhdanov/axum-async-stream 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 git repo https://github.com/Artem-Zhdanov/axum-async-stream 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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 6c96d6c1051bce8277780d676c273a65f570369068f633f019bd135d798d8295
[INFO] running `Command { std: "docker" "start" "-a" "6c96d6c1051bce8277780d676c273a65f570369068f633f019bd135d798d8295", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6c96d6c1051bce8277780d676c273a65f570369068f633f019bd135d798d8295", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c96d6c1051bce8277780d676c273a65f570369068f633f019bd135d798d8295", kill_on_drop: false }`
[INFO] [stdout] 6c96d6c1051bce8277780d676c273a65f570369068f633f019bd135d798d8295
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 70a11f7c45d78258781c5abcb23749a71967776caf06f9b413cccbf1d4b28636
[INFO] running `Command { std: "docker" "start" "-a" "70a11f7c45d78258781c5abcb23749a71967776caf06f9b413cccbf1d4b28636", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.70
[INFO] [stderr]    Compiling futures-task v0.3.29
[INFO] [stderr]    Compiling futures-util v0.3.29
[INFO] [stderr]     Checking smallvec v1.11.2
[INFO] [stderr]    Compiling serde v1.0.193
[INFO] [stderr]     Checking http v0.2.11
[INFO] [stderr]     Checking mio v0.8.10
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]    Compiling axum-core v0.3.4
[INFO] [stderr]     Checking tower-layer v0.3.2
[INFO] [stderr]    Compiling serde_json v1.0.108
[INFO] [stderr]    Compiling either v1.9.0
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking sha1 v0.10.6
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling axum v0.6.20
[INFO] [stderr]     Checking csv-core v0.1.11
[INFO] [stderr]    Compiling itertools v0.11.0
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]     Checking http-body v0.4.5
[INFO] [stderr]     Checking headers-core v0.2.0
[INFO] [stderr]     Checking headers v0.3.9
[INFO] [stderr]    Compiling futures-macro v0.3.29
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.193
[INFO] [stderr]    Compiling pin-project-internal v1.1.3
[INFO] [stderr]    Compiling async-trait v0.1.74
[INFO] [stderr]    Compiling prost-derive v0.12.3
[INFO] [stderr]    Compiling async-stream-impl v0.3.5
[INFO] [stderr]     Checking async-stream v0.3.5
[INFO] [stderr]     Checking tokio v1.34.0
[INFO] [stderr]     Checking pin-project v1.1.3
[INFO] [stderr]     Checking prost v0.12.3
[INFO] [stderr]     Checking futures-executor v0.3.29
[INFO] [stderr]     Checking futures v0.3.29
[INFO] [stderr]     Checking tower v0.4.13
[INFO] [stderr]     Checking hyper v0.14.27
[INFO] [stderr]     Checking tokio-util v0.7.10
[INFO] [stderr]     Checking tokio-stream v0.1.14
[INFO] [stderr]     Checking serde_path_to_error v0.1.14
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking csv v1.3.0
[INFO] [stderr]     Checking axum-streams v0.10.0
[INFO] [stderr]     Checking hello_world2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<AsyncStream<u32, {async block@/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/async-stream-0.3.5/src/lib.rs:193:9: 193:59}>, MyError>
[INFO] [stdout]   --> src/main.rs:23:77
[INFO] [stdout]    |
[INFO] [stdout] 23 |   async fn create_stream_of_int() -> Result<impl Stream<Item = u32>, MyError> {
[INFO] [stdout]    |  _____________________________________________________________________________^
[INFO] [stdout] 24 | |     let strm = stream! {
[INFO] [stdout] 25 | |         for i in 1..5 {
[INFO] [stdout] 26 | |             let my_int =  async {
[INFO] [stdout] ...  |
[INFO] [stdout] 34 | |     Ok(strm)
[INFO] [stdout] 35 | | }
[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<AsyncStream<u32, {async block@/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/async-stream-0.3.5/src/lib.rs:193:9: 193:59}>, MyError>
[INFO] [stdout]   --> src/main.rs:23:77
[INFO] [stdout]    |
[INFO] [stdout] 23 |   async fn create_stream_of_int() -> Result<impl Stream<Item = u32>, MyError> {
[INFO] [stdout]    |  _____________________________________________________________________________^
[INFO] [stdout] 24 | |     let strm = stream! {
[INFO] [stdout] 25 | |         for i in 1..5 {
[INFO] [stdout] 26 | |             let my_int =  async {
[INFO] [stdout] ...  |
[INFO] [stdout] 34 | |     Ok(strm)
[INFO] [stdout] 35 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AsyncStream<u32, {async block@/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/async-stream-0.3.5/src/lib.rs:193:9: 193:59}>, MyError>
[INFO] [stdout]   --> src/main.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     Ok(strm)
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this type continue be must used: Result<impl futures::Stream<Item = u32>, MyError>
[INFO] [stdout]   --> src/main.rs:38:26
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let stream_of_ints = create_stream_of_int().await.unwrap();
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mustuse_in_always_ok)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this type continue be must used: Result<impl futures::Stream<Item = u32>, MyError>
[INFO] [stdout]   --> src/main.rs:38:49
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let stream_of_ints = create_stream_of_int().await.unwrap();
[INFO] [stdout]    |                                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this type continue be must used: Result<impl futures::Stream<Item = u32>, MyError>
[INFO] [stdout]   --> src/main.rs:38:26
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let stream_of_ints = create_stream_of_int().await.unwrap();
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hello_world2` (bin "hello_world2") due to 3 previous errors; 3 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<AsyncStream<u32, {async block@/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/async-stream-0.3.5/src/lib.rs:193:9: 193:59}>, MyError>
[INFO] [stdout]   --> src/main.rs:23:77
[INFO] [stdout]    |
[INFO] [stdout] 23 |   async fn create_stream_of_int() -> Result<impl Stream<Item = u32>, MyError> {
[INFO] [stdout]    |  _____________________________________________________________________________^
[INFO] [stdout] 24 | |     let strm = stream! {
[INFO] [stdout] 25 | |         for i in 1..5 {
[INFO] [stdout] 26 | |             let my_int =  async {
[INFO] [stdout] ...  |
[INFO] [stdout] 34 | |     Ok(strm)
[INFO] [stdout] 35 | | }
[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<AsyncStream<u32, {async block@/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/async-stream-0.3.5/src/lib.rs:193:9: 193:59}>, MyError>
[INFO] [stdout]   --> src/main.rs:23:77
[INFO] [stdout]    |
[INFO] [stdout] 23 |   async fn create_stream_of_int() -> Result<impl Stream<Item = u32>, MyError> {
[INFO] [stdout]    |  _____________________________________________________________________________^
[INFO] [stdout] 24 | |     let strm = stream! {
[INFO] [stdout] 25 | |         for i in 1..5 {
[INFO] [stdout] 26 | |             let my_int =  async {
[INFO] [stdout] ...  |
[INFO] [stdout] 34 | |     Ok(strm)
[INFO] [stdout] 35 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AsyncStream<u32, {async block@/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/async-stream-0.3.5/src/lib.rs:193:9: 193:59}>, MyError>
[INFO] [stdout]   --> src/main.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     Ok(strm)
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this type continue be must used: Result<impl futures::Stream<Item = u32>, MyError>
[INFO] [stdout]   --> src/main.rs:38:26
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let stream_of_ints = create_stream_of_int().await.unwrap();
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mustuse_in_always_ok)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this type continue be must used: Result<impl futures::Stream<Item = u32>, MyError>
[INFO] [stdout]   --> src/main.rs:38:49
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let stream_of_ints = create_stream_of_int().await.unwrap();
[INFO] [stdout]    |                                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this type continue be must used: Result<impl futures::Stream<Item = u32>, MyError>
[INFO] [stdout]   --> src/main.rs:38:26
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let stream_of_ints = create_stream_of_int().await.unwrap();
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hello_world2` (bin "hello_world2" test) due to 3 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "70a11f7c45d78258781c5abcb23749a71967776caf06f9b413cccbf1d4b28636", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70a11f7c45d78258781c5abcb23749a71967776caf06f9b413cccbf1d4b28636", kill_on_drop: false }`
[INFO] [stdout] 70a11f7c45d78258781c5abcb23749a71967776caf06f9b413cccbf1d4b28636
