[INFO] fetching crate buf-read-ext 0.3.0...
[INFO] checking buf-read-ext-0.3.0 against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] extracting crate buf-read-ext 0.3.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate buf-read-ext 0.3.0 on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate buf-read-ext 0.3.0
[INFO] finished tweaking crates.io crate buf-read-ext 0.3.0
[INFO] tweaked toml for crates.io crate buf-read-ext 0.3.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2a2b174e054684cb7e2ae23d45ad12c072cb2f0e2e55a0b8b08694b2116a8b4f
[INFO] running `"docker" "start" "-a" "2a2b174e054684cb7e2ae23d45ad12c072cb2f0e2e55a0b8b08694b2116a8b4f"`
[INFO] [stderr]     Checking buf-read-ext v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:112:29
[INFO] [stderr]     |
[INFO] [stderr] 112 | ...                   try!(out.write_all(&token[..prefix_len]));
[INFO] [stderr]     |                       ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:116:29
[INFO] [stderr]     |
[INFO] [stderr] 116 | ...                   try!(out.write_all(&token[..prefix_len - next_prefix_len]));
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:131:17
[INFO] [stderr]     |
[INFO] [stderr] 131 |                 try!(out.write_all(&buffer[..index]));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:158:13
[INFO] [stderr]     |
[INFO] [stderr] 158 |             try!(out.write_all(&buffer[..buffer.len()-reserve]));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:112:29
[INFO] [stderr]     |
[INFO] [stderr] 112 | ...                   try!(out.write_all(&token[..prefix_len]));
[INFO] [stderr]     |                       ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:116:29
[INFO] [stderr]     |
[INFO] [stderr] 116 | ...                   try!(out.write_all(&token[..prefix_len - next_prefix_len]));
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:131:17
[INFO] [stderr]     |
[INFO] [stderr] 131 |                 try!(out.write_all(&buffer[..index]));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:158:13
[INFO] [stderr]     |
[INFO] [stderr] 158 |             try!(out.write_all(&buffer[..buffer.len()-reserve]));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:46:84
[INFO] [stderr]    |
[INFO] [stderr] 46 | fn stream_until_token<R: BufRead + ?Sized, W: Write>(stream: &mut R, token: &[u8], mut out: &mut W)
[INFO] [stderr]    |                                                                                    ----^^^
[INFO] [stderr]    |                                                                                    |
[INFO] [stderr]    |                                                                                    help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:46:84
[INFO] [stderr]    |
[INFO] [stderr] 46 | fn stream_until_token<R: BufRead + ?Sized, W: Write>(stream: &mut R, token: &[u8], mut out: &mut W)
[INFO] [stderr]    |                                                                                    ----^^^
[INFO] [stderr]    |                                                                                    |
[INFO] [stderr]    |                                                                                    help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `"docker" "inspect" "2a2b174e054684cb7e2ae23d45ad12c072cb2f0e2e55a0b8b08694b2116a8b4f"`
[INFO] running `"docker" "rm" "-f" "2a2b174e054684cb7e2ae23d45ad12c072cb2f0e2e55a0b8b08694b2116a8b4f"`
[INFO] [stdout] 2a2b174e054684cb7e2ae23d45ad12c072cb2f0e2e55a0b8b08694b2116a8b4f