[INFO] fetching crate buffered-io 0.6.0...
[INFO] checking buffered-io-0.6.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate buffered-io 0.6.0 into /workspace/builds/worker-6-tc2/source
[INFO] removed /workspace/builds/worker-6-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate buffered-io 0.6.0
[INFO] finished tweaking crates.io crate buffered-io 0.6.0
[INFO] tweaked toml for crates.io crate buffered-io 0.6.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate buffered-io 0.6.0 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 buffered-io 0.6.0 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] [stderr]     Blocking waiting for file lock on package cache
[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] 87da2c7b9515643d0102a7c81611ddd8c6bf4e54d89cd4a5ed364192dde84f07
[INFO] running `Command { std: "docker" "start" "-a" "87da2c7b9515643d0102a7c81611ddd8c6bf4e54d89cd4a5ed364192dde84f07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "87da2c7b9515643d0102a7c81611ddd8c6bf4e54d89cd4a5ed364192dde84f07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87da2c7b9515643d0102a7c81611ddd8c6bf4e54d89cd4a5ed364192dde84f07", kill_on_drop: false }`
[INFO] [stdout] 87da2c7b9515643d0102a7c81611ddd8c6bf4e54d89cd4a5ed364192dde84f07
[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] f08aa6eba81e05b77a25752d3f738363342fe55bec98e5305974206f1161c472
[INFO] running `Command { std: "docker" "start" "-a" "f08aa6eba81e05b77a25752d3f738363342fe55bec98e5305974206f1161c472", kill_on_drop: false }`
[INFO] [stderr]     Checking embedded-io v0.7.1
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]     Checking embedded-io-async v0.7.0
[INFO] [stderr]     Checking embedded-io-adapters v0.7.0
[INFO] [stderr]     Checking buffered-io v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling async-stream-impl v0.3.6
[INFO] [stderr]     Checking async-stream v0.3.6
[INFO] [stderr]     Checking tokio v1.47.1
[INFO] [stderr]     Checking tokio-stream v0.1.17
[INFO] [stderr]     Checking tokio-test v0.4.4
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/read.rs:136:23
[INFO] [stdout]     |
[INFO] [stdout] 136 |         assert_eq!(2, buffered.read(&mut read_buf).await.unwrap());
[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<usize, Infallible>
[INFO] [stdout]    --> src/asynch/read.rs:136:52
[INFO] [stdout]     |
[INFO] [stdout] 136 |         assert_eq!(2, buffered.read(&mut read_buf).await.unwrap());
[INFO] [stdout]     |                                                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/read.rs:136:23
[INFO] [stdout]     |
[INFO] [stdout] 136 |         assert_eq!(2, buffered.read(&mut read_buf).await.unwrap());
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/read.rs:142:23
[INFO] [stdout]     |
[INFO] [stdout] 142 |         assert_eq!(2, buffered.read(&mut read_buf).await.unwrap());
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/read.rs:142:52
[INFO] [stdout]     |
[INFO] [stdout] 142 |         assert_eq!(2, buffered.read(&mut read_buf).await.unwrap());
[INFO] [stdout]     |                                                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/read.rs:142:23
[INFO] [stdout]     |
[INFO] [stdout] 142 |         assert_eq!(2, buffered.read(&mut read_buf).await.unwrap());
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/read.rs:148:23
[INFO] [stdout]     |
[INFO] [stdout] 148 |         assert_eq!(4, buffered.read(&mut read_buf).await.unwrap());
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/read.rs:148:52
[INFO] [stdout]     |
[INFO] [stdout] 148 |         assert_eq!(4, buffered.read(&mut read_buf).await.unwrap());
[INFO] [stdout]     |                                                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/read.rs:148:23
[INFO] [stdout]     |
[INFO] [stdout] 148 |         assert_eq!(4, buffered.read(&mut read_buf).await.unwrap());
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/read.rs:161:24
[INFO] [stdout]     |
[INFO] [stdout] 161 |         assert_eq!(10, buffered.read(&mut read_buf).await.unwrap());
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/read.rs:161:53
[INFO] [stdout]     |
[INFO] [stdout] 161 |         assert_eq!(10, buffered.read(&mut read_buf).await.unwrap());
[INFO] [stdout]     |                                                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/read.rs:161:24
[INFO] [stdout]     |
[INFO] [stdout] 161 |         assert_eq!(10, buffered.read(&mut read_buf).await.unwrap());
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]    --> src/asynch/read.rs:177:13
[INFO] [stdout]     |
[INFO] [stdout] 177 |             buffered.fill_buf().await.unwrap()
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]    --> src/asynch/read.rs:177:33
[INFO] [stdout]     |
[INFO] [stdout] 177 |             buffered.fill_buf().await.unwrap()
[INFO] [stdout]     |                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]    --> src/asynch/read.rs:177:13
[INFO] [stdout]     |
[INFO] [stdout] 177 |             buffered.fill_buf().await.unwrap()
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]    --> src/asynch/read.rs:185:41
[INFO] [stdout]     |
[INFO] [stdout] 185 |         assert_eq!(&[3, 4, 5, 6, 7, 8], buffered.fill_buf().await.unwrap());
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]    --> src/asynch/read.rs:185:61
[INFO] [stdout]     |
[INFO] [stdout] 185 |         assert_eq!(&[3, 4, 5, 6, 7, 8], buffered.fill_buf().await.unwrap());
[INFO] [stdout]     |                                                             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]    --> src/asynch/read.rs:185:41
[INFO] [stdout]     |
[INFO] [stdout] 185 |         assert_eq!(&[3, 4, 5, 6, 7, 8], buffered.fill_buf().await.unwrap());
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]    --> src/asynch/read.rs:191:30
[INFO] [stdout]     |
[INFO] [stdout] 191 |         assert_eq!(&[9, 10], buffered.fill_buf().await.unwrap());
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]    --> src/asynch/read.rs:191:50
[INFO] [stdout]     |
[INFO] [stdout] 191 |         assert_eq!(&[9, 10], buffered.fill_buf().await.unwrap());
[INFO] [stdout]     |                                                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]    --> src/asynch/read.rs:191:30
[INFO] [stdout]     |
[INFO] [stdout] 191 |         assert_eq!(&[9, 10], buffered.fill_buf().await.unwrap());
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/write.rs:147:23
[INFO] [stdout]     |
[INFO] [stdout] 147 |         assert_eq!(2, buffered.write(&[1, 2]).await.unwrap());
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/write.rs:147:47
[INFO] [stdout]     |
[INFO] [stdout] 147 |         assert_eq!(2, buffered.write(&[1, 2]).await.unwrap());
[INFO] [stdout]     |                                               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/write.rs:147:23
[INFO] [stdout]     |
[INFO] [stdout] 147 |         assert_eq!(2, buffered.write(&[1, 2]).await.unwrap());
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/write.rs:151:23
[INFO] [stdout]     |
[INFO] [stdout] 151 |         assert_eq!(2, buffered.write(&[3, 4]).await.unwrap());
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/write.rs:151:47
[INFO] [stdout]     |
[INFO] [stdout] 151 |         assert_eq!(2, buffered.write(&[3, 4]).await.unwrap());
[INFO] [stdout]     |                                               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/write.rs:151:23
[INFO] [stdout]     |
[INFO] [stdout] 151 |         assert_eq!(2, buffered.write(&[3, 4]).await.unwrap());
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/write.rs:155:23
[INFO] [stdout]     |
[INFO] [stdout] 155 |         assert_eq!(4, buffered.write(&[5, 6, 7, 8]).await.unwrap());
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/write.rs:155:53
[INFO] [stdout]     |
[INFO] [stdout] 155 |         assert_eq!(4, buffered.write(&[5, 6, 7, 8]).await.unwrap());
[INFO] [stdout]     |                                                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/write.rs:155:23
[INFO] [stdout]     |
[INFO] [stdout] 155 |         assert_eq!(4, buffered.write(&[5, 6, 7, 8]).await.unwrap());
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/write.rs:167:23
[INFO] [stdout]     |
[INFO] [stdout] 167 |         assert_eq!(8, buffered.write(&[1, 2, 3, 4, 5, 6, 7, 8]).await.unwrap());
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/write.rs:167:65
[INFO] [stdout]     |
[INFO] [stdout] 167 |         assert_eq!(8, buffered.write(&[1, 2, 3, 4, 5, 6, 7, 8]).await.unwrap());
[INFO] [stdout]     |                                                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/write.rs:167:23
[INFO] [stdout]     |
[INFO] [stdout] 167 |         assert_eq!(8, buffered.write(&[1, 2, 3, 4, 5, 6, 7, 8]).await.unwrap());
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/write.rs:178:23
[INFO] [stdout]     |
[INFO] [stdout] 178 |         assert_eq!(1, buffered.write(&[1]).await.unwrap());
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/write.rs:178:44
[INFO] [stdout]     |
[INFO] [stdout] 178 |         assert_eq!(1, buffered.write(&[1]).await.unwrap());
[INFO] [stdout]     |                                            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/write.rs:178:23
[INFO] [stdout]     |
[INFO] [stdout] 178 |         assert_eq!(1, buffered.write(&[1]).await.unwrap());
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/write.rs:182:23
[INFO] [stdout]     |
[INFO] [stdout] 182 |         assert_eq!(7, buffered.write(&[2, 3, 4, 5, 6, 7, 8, 9]).await.unwrap());
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/write.rs:182:65
[INFO] [stdout]     |
[INFO] [stdout] 182 |         assert_eq!(7, buffered.write(&[2, 3, 4, 5, 6, 7, 8, 9]).await.unwrap());
[INFO] [stdout]     |                                                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/write.rs:182:23
[INFO] [stdout]     |
[INFO] [stdout] 182 |         assert_eq!(7, buffered.write(&[2, 3, 4, 5, 6, 7, 8, 9]).await.unwrap());
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/write.rs:257:23
[INFO] [stdout]     |
[INFO] [stdout] 257 |         assert_eq!(2, buffered.write(&[1, 2]).await.unwrap());
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/write.rs:257:47
[INFO] [stdout]     |
[INFO] [stdout] 257 |         assert_eq!(2, buffered.write(&[1, 2]).await.unwrap());
[INFO] [stdout]     |                                               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/asynch/write.rs:257:23
[INFO] [stdout]     |
[INFO] [stdout] 257 |         assert_eq!(2, buffered.write(&[1, 2]).await.unwrap());
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `buffered-io` (lib test) due to 42 previous errors
[INFO] running `Command { std: "docker" "inspect" "f08aa6eba81e05b77a25752d3f738363342fe55bec98e5305974206f1161c472", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f08aa6eba81e05b77a25752d3f738363342fe55bec98e5305974206f1161c472", kill_on_drop: false }`
[INFO] [stdout] f08aa6eba81e05b77a25752d3f738363342fe55bec98e5305974206f1161c472