[INFO] fetching crate fixed-buffer 0.5.0...
[INFO] testing fixed-buffer-0.5.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate fixed-buffer 0.5.0 into /workspace/builds/worker-77/source
[INFO] validating manifest of crates.io crate fixed-buffer 0.5.0 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fixed-buffer 0.5.0
[INFO] finished tweaking crates.io crate fixed-buffer 0.5.0
[INFO] tweaked toml for crates.io crate fixed-buffer 0.5.0 written to /workspace/builds/worker-77/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded safina-executor v0.3.3
[INFO] [stderr]   Downloaded safe-proc-macro2 v1.0.36
[INFO] [stderr]   Downloaded read-write-ext v0.1.1
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[INFO] [stderr]   Downloaded safina-async-test-core v0.1.4
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[INFO] [stderr]   Downloaded safina-sync v0.2.4
[INFO] [stderr]   Downloaded safina-async-test v0.1.13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "inspect" "f8c21aaa8250463a339472e8ba8d9dc86309f2bc1d24cdcd66d9f437118ee2a5", kill_on_drop: false }`
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[INFO] [stdout] 49331619a0ed2aa52d5aaf121db93cd9f25477f2e87c87de7fa8f5221ff165a9
[INFO] running `Command { std: "docker" "start" "-a" "49331619a0ed2aa52d5aaf121db93cd9f25477f2e87c87de7fa8f5221ff165a9", kill_on_drop: false }`
[INFO] [stderr]    Compiling fixed-buffer v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `Command { std: "docker" "inspect" "49331619a0ed2aa52d5aaf121db93cd9f25477f2e87c87de7fa8f5221ff165a9", kill_on_drop: false }`
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[INFO] [stdout] 49331619a0ed2aa52d5aaf121db93cd9f25477f2e87c87de7fa8f5221ff165a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 04d1d4d179bf4766a12417fdfb2e182077725d6336b320b3cc8192ddf50c914a
[INFO] running `Command { std: "docker" "start" "-a" "04d1d4d179bf4766a12417fdfb2e182077725d6336b320b3cc8192ddf50c914a", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling pin-project-lite v0.2.8
[INFO] [stderr]    Compiling cache-padded v1.2.0
[INFO] [stderr]    Compiling once_cell v1.10.0
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling event-listener v2.5.2
[INFO] [stderr]    Compiling parking v2.0.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling fastrand v1.7.0
[INFO] [stderr]    Compiling waker-fn v1.1.0
[INFO] [stderr]    Compiling futures-io v0.3.21
[INFO] [stderr]    Compiling slab v0.4.6
[INFO] [stderr]    Compiling async-task v4.2.0
[INFO] [stderr]    Compiling atomic-waker v1.0.0
[INFO] [stderr]    Compiling safe-proc-macro2 v1.0.36
[INFO] [stderr]    Compiling signal-hook v0.3.13
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling build_const v0.2.2
[INFO] [stderr]    Compiling safina-threadpool v0.2.4
[INFO] [stderr]    Compiling safina-sync v0.2.4
[INFO] [stderr]    Compiling bytes v1.1.0
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling read-write-ext v0.1.1
[INFO] [stderr]    Compiling socket2 v0.4.4
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling safina-timer v0.1.11
[INFO] [stderr]    Compiling concurrent-queue v1.2.2
[INFO] [stderr]    Compiling async-lock v2.5.0
[INFO] [stderr]    Compiling async-mutex v1.4.0
[INFO] [stderr]    Compiling safina-executor v0.3.3
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.8
[INFO] [stderr]    Compiling async-channel v1.6.1
[INFO] [stderr]    Compiling futures-lite v1.12.0
[INFO] [stderr]    Compiling safe-quote v1.0.15
[INFO] [stderr]    Compiling safina-async-test-core v0.1.4
[INFO] [stderr]    Compiling safina-async-test v0.1.13
[INFO] [stderr]    Compiling blocking v1.2.0
[INFO] [stderr]    Compiling async-executor v1.4.1
[INFO] [stderr]    Compiling async-fs v1.5.0
[INFO] [stderr]    Compiling ctor v0.1.22
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling tokio v1.17.0
[INFO] [stderr]    Compiling polling v2.2.0
[INFO] [stderr]    Compiling kv-log-macro v1.0.7
[INFO] [stderr]    Compiling async-io v1.6.0
[INFO] [stderr]    Compiling async-net v1.6.1
[INFO] [stderr]    Compiling async-global-executor v2.0.4
[INFO] [stderr]    Compiling async-process v1.3.0
[INFO] [stderr]    Compiling async-std v1.11.0
[INFO] [stderr]    Compiling smol v1.2.5
[INFO] [stderr]    Compiling fixed-buffer v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> tests/server.rs:43:43
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let mut payload = read_writer.take_rw(len);
[INFO] [stdout]    |                                           ^^^ expected `u64`, found `usize`
[INFO] [stdout]    |
[INFO] [stdout] help: you can convert a `usize` to a `u64` and panic if the converted value doesn't fit
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let mut payload = read_writer.take_rw(len.try_into().unwrap());
[INFO] [stdout]    |                                              ++++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<0_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/async_std.rs:7:40
[INFO] [stdout]     |
[INFO] [stdout] 7   |     assert_eq!(0, FixedBuf::from(*b"").read(&mut [b'x'; 0]).await.unwrap());
[INFO] [stdout]     |                                        ^^^^ method cannot be called on `FixedBuf<0_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<0_usize>: ReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<0_usize>: async_std::io::Read`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<0_usize>: async_std::io::Read`
[INFO] [stdout]             which is required by `FixedBuf<0_usize>: ReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fixed-buffer` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<1_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/async_std.rs:10:27
[INFO] [stdout]     |
[INFO] [stdout] 10  |         assert_eq!(0, buf.read(&mut [b'x'; 0]).await.unwrap());
[INFO] [stdout]     |                           ^^^^ method cannot be called on `FixedBuf<1_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<1_usize>: ReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<1_usize>: async_std::io::Read`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<1_usize>: async_std::io::Read`
[INFO] [stdout]             which is required by `FixedBuf<1_usize>: ReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<0_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/async_std.rs:16:27
[INFO] [stdout]     |
[INFO] [stdout] 16  |         assert_eq!(0, buf.read(&mut data).await.unwrap());
[INFO] [stdout]     |                           ^^^^ method cannot be called on `FixedBuf<0_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<0_usize>: ReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<0_usize>: async_std::io::Read`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<0_usize>: async_std::io::Read`
[INFO] [stdout]             which is required by `FixedBuf<0_usize>: ReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<0_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/tokio.rs:6:40
[INFO] [stdout]     |
[INFO] [stdout] 6   |     assert_eq!(0, FixedBuf::from(*b"").read(&mut [b'x'; 0]).await.unwrap());
[INFO] [stdout]     |                                        ^^^^ method cannot be called on `FixedBuf<0_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<0_usize>: AsyncReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<0_usize>: AsyncRead`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<0_usize>: AsyncRead`
[INFO] [stdout]             which is required by `FixedBuf<0_usize>: AsyncReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<0_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/futures_io.rs:7:40
[INFO] [stdout]     |
[INFO] [stdout] 7   |     assert_eq!(0, FixedBuf::from(*b"").read(&mut [b'x'; 0]).await.unwrap());
[INFO] [stdout]     |                                        ^^^^ method cannot be called on `FixedBuf<0_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<0_usize>: AsyncReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<0_usize>: AsyncRead`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<0_usize>: AsyncRead`
[INFO] [stdout]             which is required by `FixedBuf<0_usize>: AsyncReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<0_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/smol.rs:7:40
[INFO] [stdout]     |
[INFO] [stdout] 7   |     assert_eq!(0, FixedBuf::from(*b"").read(&mut [b'x'; 0]).await.unwrap());
[INFO] [stdout]     |                                        ^^^^ method cannot be called on `FixedBuf<0_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<0_usize>: AsyncReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<0_usize>: AsyncRead`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<0_usize>: AsyncRead`
[INFO] [stdout]             which is required by `FixedBuf<0_usize>: AsyncReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<1_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/async_std.rs:23:27
[INFO] [stdout]     |
[INFO] [stdout] 23  |         assert_eq!(1, buf.read(&mut data).await.unwrap());
[INFO] [stdout]     |                           ^^^^ method cannot be called on `FixedBuf<1_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<1_usize>: ReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<1_usize>: async_std::io::Read`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<1_usize>: async_std::io::Read`
[INFO] [stdout]             which is required by `FixedBuf<1_usize>: ReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<2_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/async_std.rs:30:27
[INFO] [stdout]     |
[INFO] [stdout] 30  |         assert_eq!(1, buf.read(&mut data).await.unwrap());
[INFO] [stdout]     |                           ^^^^ method cannot be called on `FixedBuf<2_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<2_usize>: ReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<2_usize>: async_std::io::Read`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<2_usize>: async_std::io::Read`
[INFO] [stdout]             which is required by `FixedBuf<2_usize>: ReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<1_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/tokio.rs:9:27
[INFO] [stdout]     |
[INFO] [stdout] 9   |         assert_eq!(0, buf.read(&mut [b'x'; 0]).await.unwrap());
[INFO] [stdout]     |                           ^^^^ method cannot be called on `FixedBuf<1_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<1_usize>: AsyncReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<1_usize>: AsyncRead`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<1_usize>: AsyncRead`
[INFO] [stdout]             which is required by `FixedBuf<1_usize>: AsyncReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<1_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/async_std.rs:37:27
[INFO] [stdout]     |
[INFO] [stdout] 37  |         assert_eq!(1, buf.read(&mut data).await.unwrap());
[INFO] [stdout]     |                           ^^^^ method cannot be called on `FixedBuf<1_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<1_usize>: ReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<1_usize>: async_std::io::Read`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<1_usize>: async_std::io::Read`
[INFO] [stdout]             which is required by `FixedBuf<1_usize>: ReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<0_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/tokio.rs:15:27
[INFO] [stdout]     |
[INFO] [stdout] 15  |         assert_eq!(0, buf.read(&mut data).await.unwrap());
[INFO] [stdout]     |                           ^^^^ method cannot be called on `FixedBuf<0_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<0_usize>: AsyncReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<0_usize>: AsyncRead`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<0_usize>: AsyncRead`
[INFO] [stdout]             which is required by `FixedBuf<0_usize>: AsyncReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<1_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/futures_io.rs:10:27
[INFO] [stdout]     |
[INFO] [stdout] 10  |         assert_eq!(0, buf.read(&mut [b'x'; 0]).await.unwrap());
[INFO] [stdout]     |                           ^^^^ method cannot be called on `FixedBuf<1_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<1_usize>: AsyncReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<1_usize>: AsyncRead`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<1_usize>: AsyncRead`
[INFO] [stdout]             which is required by `FixedBuf<1_usize>: AsyncReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<2_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/async_std.rs:44:27
[INFO] [stdout]     |
[INFO] [stdout] 44  |         assert_eq!(2, buf.read(&mut data).await.unwrap());
[INFO] [stdout]     |                           ^^^^ method cannot be called on `FixedBuf<2_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<2_usize>: ReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<2_usize>: async_std::io::Read`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<2_usize>: async_std::io::Read`
[INFO] [stdout]             which is required by `FixedBuf<2_usize>: ReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<1_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/tokio.rs:22:27
[INFO] [stdout]     |
[INFO] [stdout] 22  |         assert_eq!(1, buf.read(&mut data).await.unwrap());
[INFO] [stdout]     |                           ^^^^ method cannot be called on `FixedBuf<1_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<1_usize>: AsyncReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<1_usize>: AsyncRead`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<1_usize>: AsyncRead`
[INFO] [stdout]             which is required by `FixedBuf<1_usize>: AsyncReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<3_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/async_std.rs:51:27
[INFO] [stdout]     |
[INFO] [stdout] 51  |         assert_eq!(2, buf.read(&mut data).await.unwrap());
[INFO] [stdout]     |                           ^^^^ method cannot be called on `FixedBuf<3_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: ReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: async_std::io::Read`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<3_usize>: async_std::io::Read`
[INFO] [stdout]             which is required by `FixedBuf<3_usize>: ReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<2_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/tokio.rs:29:27
[INFO] [stdout]     |
[INFO] [stdout] 29  |         assert_eq!(1, buf.read(&mut data).await.unwrap());
[INFO] [stdout]     |                           ^^^^ method cannot be called on `FixedBuf<2_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<2_usize>: AsyncReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<2_usize>: AsyncRead`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<2_usize>: AsyncRead`
[INFO] [stdout]             which is required by `FixedBuf<2_usize>: AsyncReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `write` exists for struct `FixedBuf<3_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/async_std.rs:60:23
[INFO] [stdout]     |
[INFO] [stdout] 60  |     assert_eq!(2, buf.write(b"ab").await.unwrap());
[INFO] [stdout]     |                       ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: WriteExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: async_std::io::Write`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<3_usize>: async_std::io::Write`
[INFO] [stdout]             which is required by `FixedBuf<3_usize>: WriteExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Write;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<1_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/tokio.rs:36:27
[INFO] [stdout]     |
[INFO] [stdout] 36  |         assert_eq!(1, buf.read(&mut data).await.unwrap());
[INFO] [stdout]     |                           ^^^^ method cannot be called on `FixedBuf<1_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<1_usize>: AsyncReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<1_usize>: AsyncRead`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<1_usize>: AsyncRead`
[INFO] [stdout]             which is required by `FixedBuf<1_usize>: AsyncReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `write` exists for struct `FixedBuf<3_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/async_std.rs:61:23
[INFO] [stdout]     |
[INFO] [stdout] 61  |     assert_eq!(1, buf.write(b"cd").await.unwrap()); // Fills buffer, "d" not written.
[INFO] [stdout]     |                       ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: WriteExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: async_std::io::Write`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<3_usize>: async_std::io::Write`
[INFO] [stdout]             which is required by `FixedBuf<3_usize>: WriteExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Write;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `write` exists for struct `FixedBuf<3_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/async_std.rs:63:9
[INFO] [stdout]     |
[INFO] [stdout] 63  |     buf.write(b"d").await.unwrap_err(); // Error, buffer is full.
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: WriteExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: async_std::io::Write`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<3_usize>: async_std::io::Write`
[INFO] [stdout]             which is required by `FixedBuf<3_usize>: WriteExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Write;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ReadExt`
[INFO] [stdout]  --> tests/async_std.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use async_std::io::{ReadExt, WriteExt};
[INFO] [stdout]   |                     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `WriteExt`
[INFO] [stdout]  --> tests/async_std.rs:1:30
[INFO] [stdout]   |
[INFO] [stdout] 1 | use async_std::io::{ReadExt, WriteExt};
[INFO] [stdout]   |                              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<1_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/smol.rs:10:27
[INFO] [stdout]     |
[INFO] [stdout] 10  |         assert_eq!(0, buf.read(&mut [b'x'; 0]).await.unwrap());
[INFO] [stdout]     |                           ^^^^ method cannot be called on `FixedBuf<1_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<1_usize>: AsyncReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<1_usize>: AsyncRead`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<1_usize>: AsyncRead`
[INFO] [stdout]             which is required by `FixedBuf<1_usize>: AsyncReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<2_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/tokio.rs:43:27
[INFO] [stdout]     |
[INFO] [stdout] 43  |         assert_eq!(2, buf.read(&mut data).await.unwrap());
[INFO] [stdout]     |                           ^^^^ method cannot be called on `FixedBuf<2_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<2_usize>: AsyncReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<2_usize>: AsyncRead`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<2_usize>: AsyncRead`
[INFO] [stdout]             which is required by `FixedBuf<2_usize>: AsyncReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 11 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<3_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/tokio.rs:50:27
[INFO] [stdout]     |
[INFO] [stdout] 50  |         assert_eq!(2, buf.read(&mut data).await.unwrap());
[INFO] [stdout]     |                           ^^^^ method cannot be called on `FixedBuf<3_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: AsyncReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: AsyncRead`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<3_usize>: AsyncRead`
[INFO] [stdout]             which is required by `FixedBuf<3_usize>: AsyncReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<0_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/futures_io.rs:16:27
[INFO] [stdout]     |
[INFO] [stdout] 16  |         assert_eq!(0, buf.read(&mut data).await.unwrap());
[INFO] [stdout]     |                           ^^^^ method cannot be called on `FixedBuf<0_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<0_usize>: AsyncReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<0_usize>: AsyncRead`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<0_usize>: AsyncRead`
[INFO] [stdout]             which is required by `FixedBuf<0_usize>: AsyncReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<0_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/smol.rs:16:27
[INFO] [stdout]     |
[INFO] [stdout] 16  |         assert_eq!(0, buf.read(&mut data).await.unwrap());
[INFO] [stdout]     |                           ^^^^ method cannot be called on `FixedBuf<0_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<0_usize>: AsyncReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<0_usize>: AsyncRead`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<0_usize>: AsyncRead`
[INFO] [stdout]             which is required by `FixedBuf<0_usize>: AsyncReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<1_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/futures_io.rs:23:27
[INFO] [stdout]     |
[INFO] [stdout] 23  |         assert_eq!(1, buf.read(&mut data).await.unwrap());
[INFO] [stdout]     |                           ^^^^ method cannot be called on `FixedBuf<1_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<1_usize>: AsyncReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<1_usize>: AsyncRead`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<1_usize>: AsyncRead`
[INFO] [stdout]             which is required by `FixedBuf<1_usize>: AsyncReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<2_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/futures_io.rs:30:27
[INFO] [stdout]     |
[INFO] [stdout] 30  |         assert_eq!(1, buf.read(&mut data).await.unwrap());
[INFO] [stdout]     |                           ^^^^ method cannot be called on `FixedBuf<2_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<2_usize>: AsyncReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<2_usize>: AsyncRead`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<2_usize>: AsyncRead`
[INFO] [stdout]             which is required by `FixedBuf<2_usize>: AsyncReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<1_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/futures_io.rs:37:27
[INFO] [stdout]     |
[INFO] [stdout] 37  |         assert_eq!(1, buf.read(&mut data).await.unwrap());
[INFO] [stdout]     |                           ^^^^ method cannot be called on `FixedBuf<1_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<1_usize>: AsyncReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<1_usize>: AsyncRead`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<1_usize>: AsyncRead`
[INFO] [stdout]             which is required by `FixedBuf<1_usize>: AsyncReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<1_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/smol.rs:23:27
[INFO] [stdout]     |
[INFO] [stdout] 23  |         assert_eq!(1, buf.read(&mut data).await.unwrap());
[INFO] [stdout]     |                           ^^^^ method cannot be called on `FixedBuf<1_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<1_usize>: AsyncReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<1_usize>: AsyncRead`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<1_usize>: AsyncRead`
[INFO] [stdout]             which is required by `FixedBuf<1_usize>: AsyncReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `write` exists for struct `FixedBuf<3_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/tokio.rs:59:23
[INFO] [stdout]     |
[INFO] [stdout] 59  |     assert_eq!(2, buf.write(b"ab").await.unwrap());
[INFO] [stdout]     |                       ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: AsyncWriteExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: AsyncWrite`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<3_usize>: AsyncWrite`
[INFO] [stdout]             which is required by `FixedBuf<3_usize>: AsyncWriteExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Write;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<2_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/smol.rs:30:27
[INFO] [stdout]     |
[INFO] [stdout] 30  |         assert_eq!(1, buf.read(&mut data).await.unwrap());
[INFO] [stdout]     |                           ^^^^ method cannot be called on `FixedBuf<2_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<2_usize>: AsyncReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<2_usize>: AsyncRead`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<2_usize>: AsyncRead`
[INFO] [stdout]             which is required by `FixedBuf<2_usize>: AsyncReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<2_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/futures_io.rs:44:27
[INFO] [stdout]     |
[INFO] [stdout] 44  |         assert_eq!(2, buf.read(&mut data).await.unwrap());
[INFO] [stdout]     |                           ^^^^ method cannot be called on `FixedBuf<2_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<2_usize>: AsyncReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<2_usize>: AsyncRead`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<2_usize>: AsyncRead`
[INFO] [stdout]             which is required by `FixedBuf<2_usize>: AsyncReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `write` exists for struct `FixedBuf<3_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/tokio.rs:60:23
[INFO] [stdout]     |
[INFO] [stdout] 60  |     assert_eq!(1, buf.write(b"cd").await.unwrap()); // Fills buffer, "d" not written.
[INFO] [stdout]     |                       ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: AsyncWriteExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: AsyncWrite`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<3_usize>: AsyncWrite`
[INFO] [stdout]             which is required by `FixedBuf<3_usize>: AsyncWriteExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Write;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<1_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/smol.rs:37:27
[INFO] [stdout]     |
[INFO] [stdout] 37  |         assert_eq!(1, buf.read(&mut data).await.unwrap());
[INFO] [stdout]     |                           ^^^^ method cannot be called on `FixedBuf<1_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<1_usize>: AsyncReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<1_usize>: AsyncRead`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<1_usize>: AsyncRead`
[INFO] [stdout]             which is required by `FixedBuf<1_usize>: AsyncReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `write` exists for struct `FixedBuf<3_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/tokio.rs:62:9
[INFO] [stdout]     |
[INFO] [stdout] 62  |     buf.write(b"d").await.unwrap_err(); // Error, buffer is full.
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: AsyncWriteExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: AsyncWrite`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<3_usize>: AsyncWrite`
[INFO] [stdout]             which is required by `FixedBuf<3_usize>: AsyncWriteExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Write;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<3_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/futures_io.rs:51:27
[INFO] [stdout]     |
[INFO] [stdout] 51  |         assert_eq!(2, buf.read(&mut data).await.unwrap());
[INFO] [stdout]     |                           ^^^^ method cannot be called on `FixedBuf<3_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: AsyncReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: AsyncRead`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<3_usize>: AsyncRead`
[INFO] [stdout]             which is required by `FixedBuf<3_usize>: AsyncReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsyncReadExt`
[INFO] [stdout]  --> tests/tokio.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use tokio::io::{AsyncReadExt, AsyncWriteExt};
[INFO] [stdout]   |                 ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsyncWriteExt`
[INFO] [stdout]  --> tests/tokio.rs:2:31
[INFO] [stdout]   |
[INFO] [stdout] 2 | use tokio::io::{AsyncReadExt, AsyncWriteExt};
[INFO] [stdout]   |                               ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<2_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/smol.rs:44:27
[INFO] [stdout]     |
[INFO] [stdout] 44  |         assert_eq!(2, buf.read(&mut data).await.unwrap());
[INFO] [stdout]     |                           ^^^^ method cannot be called on `FixedBuf<2_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<2_usize>: AsyncReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<2_usize>: AsyncRead`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<2_usize>: AsyncRead`
[INFO] [stdout]             which is required by `FixedBuf<2_usize>: AsyncReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 11 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `read` exists for struct `FixedBuf<3_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/smol.rs:51:27
[INFO] [stdout]     |
[INFO] [stdout] 51  |         assert_eq!(2, buf.read(&mut data).await.unwrap());
[INFO] [stdout]     |                           ^^^^ method cannot be called on `FixedBuf<3_usize>` due to unsatisfied trait bounds
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: AsyncReadExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: AsyncRead`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<3_usize>: AsyncRead`
[INFO] [stdout]             which is required by `FixedBuf<3_usize>: AsyncReadExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `write` exists for struct `FixedBuf<3_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/futures_io.rs:60:23
[INFO] [stdout]     |
[INFO] [stdout] 60  |     assert_eq!(2, buf.write(b"ab").await.unwrap());
[INFO] [stdout]     |                       ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: AsyncWriteExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: AsyncWrite`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<3_usize>: AsyncWrite`
[INFO] [stdout]             which is required by `FixedBuf<3_usize>: AsyncWriteExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Write;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `write` exists for struct `FixedBuf<3_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/futures_io.rs:61:23
[INFO] [stdout]     |
[INFO] [stdout] 61  |     assert_eq!(1, buf.write(b"cd").await.unwrap()); // Fills buffer, "d" not written.
[INFO] [stdout]     |                       ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: AsyncWriteExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: AsyncWrite`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<3_usize>: AsyncWrite`
[INFO] [stdout]             which is required by `FixedBuf<3_usize>: AsyncWriteExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Write;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `write` exists for struct `FixedBuf<3_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/futures_io.rs:63:9
[INFO] [stdout]     |
[INFO] [stdout] 63  |     buf.write(b"d").await.unwrap_err(); // Error, buffer is full.
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: AsyncWriteExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: AsyncWrite`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<3_usize>: AsyncWrite`
[INFO] [stdout]             which is required by `FixedBuf<3_usize>: AsyncWriteExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Write;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `write` exists for struct `FixedBuf<3_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/smol.rs:60:23
[INFO] [stdout]     |
[INFO] [stdout] 60  |     assert_eq!(2, buf.write(b"ab").await.unwrap());
[INFO] [stdout]     |                       ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: AsyncWriteExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: AsyncWrite`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<3_usize>: AsyncWrite`
[INFO] [stdout]             which is required by `FixedBuf<3_usize>: AsyncWriteExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Write;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `write` exists for struct `FixedBuf<3_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/smol.rs:61:23
[INFO] [stdout]     |
[INFO] [stdout] 61  |     assert_eq!(1, buf.write(b"cd").await.unwrap()); // Fills buffer, "d" not written.
[INFO] [stdout]     |                       ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: AsyncWriteExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: AsyncWrite`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<3_usize>: AsyncWrite`
[INFO] [stdout]             which is required by `FixedBuf<3_usize>: AsyncWriteExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Write;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `write` exists for struct `FixedBuf<3_usize>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> tests/smol.rs:63:9
[INFO] [stdout]     |
[INFO] [stdout] 63  |     buf.write(b"d").await.unwrap_err(); // Error, buffer is full.
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:298:1
[INFO] [stdout]     |
[INFO] [stdout] 298 | pub struct FixedBuf<const SIZE: usize> {
[INFO] [stdout]     | --------------------------------------
[INFO] [stdout]     | |
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: AsyncWriteExt`
[INFO] [stdout]     | doesn't satisfy `FixedBuf<3_usize>: AsyncWrite`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `FixedBuf<3_usize>: AsyncWrite`
[INFO] [stdout]             which is required by `FixedBuf<3_usize>: AsyncWriteExt`
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Write;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsyncReadExt`
[INFO] [stdout]  --> tests/futures_io.rs:2:20
[INFO] [stdout]   |
[INFO] [stdout] 2 | use futures_lite::{AsyncReadExt, AsyncWriteExt};
[INFO] [stdout]   |                    ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsyncWriteExt`
[INFO] [stdout]  --> tests/futures_io.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | use futures_lite::{AsyncReadExt, AsyncWriteExt};
[INFO] [stdout]   |                                  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 11 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsyncReadExt`
[INFO] [stdout]  --> tests/smol.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | use smol::io::{AsyncReadExt, AsyncWriteExt};
[INFO] [stdout]   |                ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsyncWriteExt`
[INFO] [stdout]  --> tests/smol.rs:3:30
[INFO] [stdout]   |
[INFO] [stdout] 3 | use smol::io::{AsyncReadExt, AsyncWriteExt};
[INFO] [stdout]   |                              ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 11 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "04d1d4d179bf4766a12417fdfb2e182077725d6336b320b3cc8192ddf50c914a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04d1d4d179bf4766a12417fdfb2e182077725d6336b320b3cc8192ddf50c914a", kill_on_drop: false }`
[INFO] [stdout] 04d1d4d179bf4766a12417fdfb2e182077725d6336b320b3cc8192ddf50c914a