[INFO] fetching crate async-io-traits 0.1.0-wip...
[INFO] checking async-io-traits-0.1.0-wip against master#e59540968e0c6fc3c37d92a639b83fc8fcee5e81 for pr-114559
[INFO] extracting crate async-io-traits 0.1.0-wip into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate async-io-traits 0.1.0-wip on toolchain e59540968e0c6fc3c37d92a639b83fc8fcee5e81
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e59540968e0c6fc3c37d92a639b83fc8fcee5e81" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async-io-traits 0.1.0-wip
[INFO] finished tweaking crates.io crate async-io-traits 0.1.0-wip
[INFO] tweaked toml for crates.io crate async-io-traits 0.1.0-wip written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e59540968e0c6fc3c37d92a639b83fc8fcee5e81" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e59540968e0c6fc3c37d92a639b83fc8fcee5e81" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded owned-buf v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+e59540968e0c6fc3c37d92a639b83fc8fcee5e81" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9203494cf14b89b24be5cf023fb4691426ca24eab101a7cda789e9050efb601a
[INFO] running `Command { std: "docker" "start" "-a" "9203494cf14b89b24be5cf023fb4691426ca24eab101a7cda789e9050efb601a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9203494cf14b89b24be5cf023fb4691426ca24eab101a7cda789e9050efb601a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9203494cf14b89b24be5cf023fb4691426ca24eab101a7cda789e9050efb601a", kill_on_drop: false }`
[INFO] [stdout] 9203494cf14b89b24be5cf023fb4691426ca24eab101a7cda789e9050efb601a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "-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@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+e59540968e0c6fc3c37d92a639b83fc8fcee5e81" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 26904cf03a6e51320113ea713d6141645cd4f58508074571aca02a24c065ef6c
[INFO] running `Command { std: "docker" "start" "-a" "26904cf03a6e51320113ea713d6141645cd4f58508074571aca02a24c065ef6c", kill_on_drop: false }`
[INFO] [stderr]     Checking owned-buf v0.1.0
[INFO] [stderr]     Checking async-io-traits v0.1.0-wip (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> src/io.rs:268:9
[INFO] [stdout]     |
[INFO] [stdout] 268 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bufs`
[INFO] [stdout]   --> src/io.rs:15:39
[INFO] [stdout]    |
[INFO] [stdout] 15 |     async fn read_vectored(&mut self, bufs: &mut [IoSliceMut<'_>]) -> Result<usize> {
[INFO] [stdout]    |                                       ^^^^ help: if this is intentional, prefix it with an underscore: `_bufs`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bufs`
[INFO] [stdout]   --> src/io.rs:15:39
[INFO] [stdout]    |
[INFO] [stdout] 15 |     async fn read_vectored(&mut self, bufs: &mut [IoSliceMut<'_>]) -> Result<usize> {
[INFO] [stdout]    |                                       ^^^^ help: if this is intentional, prefix it with an underscore: `_bufs`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]   --> src/io.rs:19:34
[INFO] [stdout]    |
[INFO] [stdout] 19 |     async fn read_buf(&mut self, buf: &mut BorrowedCursor<'_>) -> Result<()> {
[INFO] [stdout]    |                                  ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]   --> src/io.rs:19:34
[INFO] [stdout]    |
[INFO] [stdout] 19 |     async fn read_buf(&mut self, buf: &mut BorrowedCursor<'_>) -> Result<()> {
[INFO] [stdout]    |                                  ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]   --> src/io.rs:23:36
[INFO] [stdout]    |
[INFO] [stdout] 23 |     async fn read_exact(&mut self, buf: &mut [u8]) -> Result<()> {
[INFO] [stdout]    |                                    ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]   --> src/io.rs:23:36
[INFO] [stdout]    |
[INFO] [stdout] 23 |     async fn read_exact(&mut self, buf: &mut [u8]) -> Result<()> {
[INFO] [stdout]    |                                    ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]   --> src/io.rs:27:40
[INFO] [stdout]    |
[INFO] [stdout] 27 |     async fn read_buf_exact(&mut self, buf: &mut BorrowedCursor<'_>) -> Result<()> {
[INFO] [stdout]    |                                        ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]   --> src/io.rs:27:40
[INFO] [stdout]    |
[INFO] [stdout] 27 |     async fn read_buf_exact(&mut self, buf: &mut BorrowedCursor<'_>) -> Result<()> {
[INFO] [stdout]    |                                        ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]   --> src/io.rs:35:37
[INFO] [stdout]    |
[INFO] [stdout] 35 |     async fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize> {
[INFO] [stdout]    |                                     ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]   --> src/io.rs:35:37
[INFO] [stdout]    |
[INFO] [stdout] 35 |     async fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize> {
[INFO] [stdout]    |                                     ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]   --> src/io.rs:39:40
[INFO] [stdout]    |
[INFO] [stdout] 39 |     async fn read_to_string(&mut self, buf: &mut String) -> Result<usize> {
[INFO] [stdout]    |                                        ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]   --> src/io.rs:39:40
[INFO] [stdout]    |
[INFO] [stdout] 39 |     async fn read_to_string(&mut self, buf: &mut String) -> Result<usize> {
[INFO] [stdout]    |                                        ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]   --> src/io.rs:86:36
[INFO] [stdout]    |
[INFO] [stdout] 86 |     async fn read_exact(&mut self, buf: OwnedBuf) -> (OwnedBuf, Result<()>) {
[INFO] [stdout]    |                                    ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]   --> src/io.rs:86:36
[INFO] [stdout]    |
[INFO] [stdout] 86 |     async fn read_exact(&mut self, buf: OwnedBuf) -> (OwnedBuf, Result<()>) {
[INFO] [stdout]    |                                    ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]   --> src/io.rs:90:37
[INFO] [stdout]    |
[INFO] [stdout] 90 |     async fn read_to_end(&mut self, buf: Vec<u8>) -> (Vec<u8>, Result<usize>) {
[INFO] [stdout]    |                                     ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]   --> src/io.rs:90:37
[INFO] [stdout]    |
[INFO] [stdout] 90 |     async fn read_to_end(&mut self, buf: Vec<u8>) -> (Vec<u8>, Result<usize>) {
[INFO] [stdout]    |                                     ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `byte`
[INFO] [stdout]    --> src/io.rs:179:36
[INFO] [stdout]     |
[INFO] [stdout] 179 |     async fn read_until(&mut self, byte: u8, buf: &mut Vec<u8>) -> Result<usize> {
[INFO] [stdout]     |                                    ^^^^ help: if this is intentional, prefix it with an underscore: `_byte`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/io.rs:179:46
[INFO] [stdout]     |
[INFO] [stdout] 179 |     async fn read_until(&mut self, byte: u8, buf: &mut Vec<u8>) -> Result<usize> {
[INFO] [stdout]     |                                              ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `byte`
[INFO] [stdout]    --> src/io.rs:179:36
[INFO] [stdout]     |
[INFO] [stdout] 179 |     async fn read_until(&mut self, byte: u8, buf: &mut Vec<u8>) -> Result<usize> {
[INFO] [stdout]     |                                    ^^^^ help: if this is intentional, prefix it with an underscore: `_byte`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/io.rs:179:46
[INFO] [stdout]     |
[INFO] [stdout] 179 |     async fn read_until(&mut self, byte: u8, buf: &mut Vec<u8>) -> Result<usize> {
[INFO] [stdout]     |                                              ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/io.rs:183:35
[INFO] [stdout]     |
[INFO] [stdout] 183 |     async fn read_line(&mut self, buf: &mut String) -> Result<usize> {
[INFO] [stdout]     |                                   ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/io.rs:183:35
[INFO] [stdout]     |
[INFO] [stdout] 183 |     async fn read_line(&mut self, buf: &mut String) -> Result<usize> {
[INFO] [stdout]     |                                   ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bufs`
[INFO] [stdout]    --> src/io.rs:198:40
[INFO] [stdout]     |
[INFO] [stdout] 198 |     async fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> Result<usize> {
[INFO] [stdout]     |                                        ^^^^ help: if this is intentional, prefix it with an underscore: `_bufs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bufs`
[INFO] [stdout]    --> src/io.rs:198:40
[INFO] [stdout]     |
[INFO] [stdout] 198 |     async fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> Result<usize> {
[INFO] [stdout]     |                                        ^^^^ help: if this is intentional, prefix it with an underscore: `_bufs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/io.rs:206:35
[INFO] [stdout]     |
[INFO] [stdout] 206 |     async fn write_all(&mut self, buf: &[u8]) -> Result<()> {
[INFO] [stdout]     |                                   ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/io.rs:206:35
[INFO] [stdout]     |
[INFO] [stdout] 206 |     async fn write_all(&mut self, buf: &[u8]) -> Result<()> {
[INFO] [stdout]     |                                   ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bufs`
[INFO] [stdout]    --> src/io.rs:210:44
[INFO] [stdout]     |
[INFO] [stdout] 210 |     async fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<()> {
[INFO] [stdout]     |                                            ^^^^ help: if this is intentional, prefix it with an underscore: `_bufs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bufs`
[INFO] [stdout]    --> src/io.rs:210:44
[INFO] [stdout]     |
[INFO] [stdout] 210 |     async fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<()> {
[INFO] [stdout]     |                                            ^^^^ help: if this is intentional, prefix it with an underscore: `_bufs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fmt`
[INFO] [stdout]    --> src/io.rs:214:35
[INFO] [stdout]     |
[INFO] [stdout] 214 |     async fn write_fmt(&mut self, fmt: Arguments<'_>) -> Result<()> {
[INFO] [stdout]     |                                   ^^^ help: if this is intentional, prefix it with an underscore: `_fmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fmt`
[INFO] [stdout]    --> src/io.rs:214:35
[INFO] [stdout]     |
[INFO] [stdout] 214 |     async fn write_fmt(&mut self, fmt: Arguments<'_>) -> Result<()> {
[INFO] [stdout]     |                                   ^^^ help: if this is intentional, prefix it with an underscore: `_fmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/io.rs:243:35
[INFO] [stdout]     |
[INFO] [stdout] 243 |     async fn write_all(&mut self, buf: OwnedBuf) -> (OwnedBuf, Result<()>) {
[INFO] [stdout]     |                                   ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/io.rs:243:35
[INFO] [stdout]     |
[INFO] [stdout] 243 |     async fn write_all(&mut self, buf: OwnedBuf) -> (OwnedBuf, Result<()>) {
[INFO] [stdout]     |                                   ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/io.rs:135:19
[INFO] [stdout]     |
[INFO] [stdout] 135 |     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
[INFO] [stdout]     |                   ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/io.rs:135:19
[INFO] [stdout]     |
[INFO] [stdout] 135 |     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
[INFO] [stdout]     |                   ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/io.rs:169:19
[INFO] [stdout]     |
[INFO] [stdout] 169 |     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
[INFO] [stdout]     |                   ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/io.rs:169:19
[INFO] [stdout]     |
[INFO] [stdout] 169 |     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
[INFO] [stdout]     |                   ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bufs`
[INFO] [stdout]    --> src/io.rs:231:47
[INFO] [stdout]     |
[INFO] [stdout] 231 |     fn non_blocking_write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> Result<NonBlocking<usize>> {
[INFO] [stdout]     |                                               ^^^^ help: if this is intentional, prefix it with an underscore: `_bufs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bufs`
[INFO] [stdout]    --> src/io.rs:231:47
[INFO] [stdout]     |
[INFO] [stdout] 231 |     fn non_blocking_write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> Result<NonBlocking<usize>> {
[INFO] [stdout]     |                                               ^^^^ help: if this is intentional, prefix it with an underscore: `_bufs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "26904cf03a6e51320113ea713d6141645cd4f58508074571aca02a24c065ef6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26904cf03a6e51320113ea713d6141645cd4f58508074571aca02a24c065ef6c", kill_on_drop: false }`
[INFO] [stdout] 26904cf03a6e51320113ea713d6141645cd4f58508074571aca02a24c065ef6c
