[INFO] fetching crate cargo-doc-viewer 0.1.0...
[INFO] checking cargo-doc-viewer-0.1.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate cargo-doc-viewer 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate cargo-doc-viewer 0.1.0
[INFO] finished tweaking crates.io crate cargo-doc-viewer 0.1.0
[INFO] tweaked toml for crates.io crate cargo-doc-viewer 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cargo-doc-viewer 0.1.0 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 cargo-doc-viewer 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 7d9691507c0c66349ed05c9aa93ce4b494df64f51a77fff8dd1dd1f0a444314c
[INFO] running `Command { std: "docker" "start" "-a" "7d9691507c0c66349ed05c9aa93ce4b494df64f51a77fff8dd1dd1f0a444314c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7d9691507c0c66349ed05c9aa93ce4b494df64f51a77fff8dd1dd1f0a444314c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d9691507c0c66349ed05c9aa93ce4b494df64f51a77fff8dd1dd1f0a444314c", kill_on_drop: false }`
[INFO] [stdout] 7d9691507c0c66349ed05c9aa93ce4b494df64f51a77fff8dd1dd1f0a444314c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 23fcb8ebee54e8c87e02b37b77c867567f14c0cec4cf68a19bf8847aa9343506
[INFO] running `Command { std: "docker" "start" "-a" "23fcb8ebee54e8c87e02b37b77c867567f14c0cec4cf68a19bf8847aa9343506", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling unicode-ident v1.0.19
[INFO] [stderr]    Compiling mime_guess v2.0.5
[INFO] [stderr]     Checking unsafe-libyaml v0.2.11
[INFO] [stderr]     Checking serde_json v1.0.145
[INFO] [stderr]     Checking dotenvy v0.15.7
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]     Checking socket2 v0.6.1
[INFO] [stderr]     Checking mio v1.0.4
[INFO] [stderr]     Checking dirs-sys v0.4.1
[INFO] [stderr]     Checking socket2 v0.5.10
[INFO] [stderr]     Checking dirs v5.0.1
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]     Checking tokio v1.47.1
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking serde_yaml v0.9.34+deprecated
[INFO] [stderr]     Checking tokio-util v0.7.16
[INFO] [stderr]     Checking h2 v0.3.27
[INFO] [stderr]     Checking hyper v0.14.32
[INFO] [stderr]     Checking cargo-doc-viewer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<hyper::service::util::ServiceFn<{closure@src/server.rs:124:44: 124:54}, Body>, Infallible>
[INFO] [stdout]    --> src/server.rs:123:20
[INFO] [stdout]     |
[INFO] [stdout] 123 |           async move {
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 124 | |             Ok::<_, Infallible>(service_fn(move |req| {
[INFO] [stdout] 125 | |                 let state = state.clone();
[INFO] [stdout] 126 | |                 async move { handle_request(state, req).await }
[INFO] [stdout] 127 | |             }))
[INFO] [stdout] 128 | |         }
[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<hyper::service::util::ServiceFn<{closure@src/server.rs:124:44: 124:54}, Body>, Infallible>
[INFO] [stdout]    --> src/server.rs:124:13
[INFO] [stdout]     |
[INFO] [stdout] 124 | /             Ok::<_, Infallible>(service_fn(move |req| {
[INFO] [stdout] 125 | |                 let state = state.clone();
[INFO] [stdout] 126 | |                 async move { handle_request(state, req).await }
[INFO] [stdout] 127 | |             }))
[INFO] [stdout]     | |_______________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]    --> src/server.rs:126:28
[INFO] [stdout]     |
[INFO] [stdout] 126 |                 async move { handle_request(state, req).await }
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]    --> src/server.rs:126:30
[INFO] [stdout]     |
[INFO] [stdout] 126 |                 async move { handle_request(state, req).await }
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]    --> src/server.rs:126:57
[INFO] [stdout]     |
[INFO] [stdout] 126 |                 async move { handle_request(state, req).await }
[INFO] [stdout]     |                                                         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]    --> src/server.rs:126:30
[INFO] [stdout]     |
[INFO] [stdout] 126 |                 async move { handle_request(state, req).await }
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]    --> src/server.rs:208:41
[INFO] [stdout]     |
[INFO] [stdout] 208 |   ) -> Result<Response<Body>, Infallible> {
[INFO] [stdout]     |  _________________________________________^
[INFO] [stdout] 209 | |     let method = req.method().clone();
[INFO] [stdout] 210 | |
[INFO] [stdout] 211 | |     let mut response = match method {
[INFO] [stdout] ...   |
[INFO] [stdout] 223 | |     Ok(response)
[INFO] [stdout] 224 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]    --> src/server.rs:208:41
[INFO] [stdout]     |
[INFO] [stdout] 208 |   ) -> Result<Response<Body>, Infallible> {
[INFO] [stdout]     |  _________________________________________^
[INFO] [stdout] 209 | |     let method = req.method().clone();
[INFO] [stdout] 210 | |
[INFO] [stdout] 211 | |     let mut response = match method {
[INFO] [stdout] ...   |
[INFO] [stdout] 223 | |     Ok(response)
[INFO] [stdout] 224 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]    --> src/server.rs:223:5
[INFO] [stdout]     |
[INFO] [stdout] 223 |     Ok(response)
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cargo-doc-viewer` (bin "cargo-doc-viewer" test) due to 9 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<hyper::service::util::ServiceFn<{closure@src/server.rs:124:44: 124:54}, Body>, Infallible>
[INFO] [stdout]    --> src/server.rs:123:20
[INFO] [stdout]     |
[INFO] [stdout] 123 |           async move {
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 124 | |             Ok::<_, Infallible>(service_fn(move |req| {
[INFO] [stdout] 125 | |                 let state = state.clone();
[INFO] [stdout] 126 | |                 async move { handle_request(state, req).await }
[INFO] [stdout] 127 | |             }))
[INFO] [stdout] 128 | |         }
[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<hyper::service::util::ServiceFn<{closure@src/server.rs:124:44: 124:54}, Body>, Infallible>
[INFO] [stdout]    --> src/server.rs:124:13
[INFO] [stdout]     |
[INFO] [stdout] 124 | /             Ok::<_, Infallible>(service_fn(move |req| {
[INFO] [stdout] 125 | |                 let state = state.clone();
[INFO] [stdout] 126 | |                 async move { handle_request(state, req).await }
[INFO] [stdout] 127 | |             }))
[INFO] [stdout]     | |_______________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]    --> src/server.rs:126:28
[INFO] [stdout]     |
[INFO] [stdout] 126 |                 async move { handle_request(state, req).await }
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]    --> src/server.rs:126:30
[INFO] [stdout]     |
[INFO] [stdout] 126 |                 async move { handle_request(state, req).await }
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]    --> src/server.rs:126:57
[INFO] [stdout]     |
[INFO] [stdout] 126 |                 async move { handle_request(state, req).await }
[INFO] [stdout]     |                                                         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]    --> src/server.rs:126:30
[INFO] [stdout]     |
[INFO] [stdout] 126 |                 async move { handle_request(state, req).await }
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]    --> src/server.rs:208:41
[INFO] [stdout]     |
[INFO] [stdout] 208 |   ) -> Result<Response<Body>, Infallible> {
[INFO] [stdout]     |  _________________________________________^
[INFO] [stdout] 209 | |     let method = req.method().clone();
[INFO] [stdout] 210 | |
[INFO] [stdout] 211 | |     let mut response = match method {
[INFO] [stdout] ...   |
[INFO] [stdout] 223 | |     Ok(response)
[INFO] [stdout] 224 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]    --> src/server.rs:208:41
[INFO] [stdout]     |
[INFO] [stdout] 208 |   ) -> Result<Response<Body>, Infallible> {
[INFO] [stdout]     |  _________________________________________^
[INFO] [stdout] 209 | |     let method = req.method().clone();
[INFO] [stdout] 210 | |
[INFO] [stdout] 211 | |     let mut response = match method {
[INFO] [stdout] ...   |
[INFO] [stdout] 223 | |     Ok(response)
[INFO] [stdout] 224 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]    --> src/server.rs:223:5
[INFO] [stdout]     |
[INFO] [stdout] 223 |     Ok(response)
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cargo-doc-viewer` (bin "cargo-doc-viewer") due to 9 previous errors
[INFO] running `Command { std: "docker" "inspect" "23fcb8ebee54e8c87e02b37b77c867567f14c0cec4cf68a19bf8847aa9343506", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23fcb8ebee54e8c87e02b37b77c867567f14c0cec4cf68a19bf8847aa9343506", kill_on_drop: false }`
[INFO] [stdout] 23fcb8ebee54e8c87e02b37b77c867567f14c0cec4cf68a19bf8847aa9343506
