[INFO] crate rotor-carbon 0.7.0 is already in cache
[INFO] extracting crate rotor-carbon 0.7.0 into work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/reg/rotor-carbon/0.7.0
[INFO] extracting crate rotor-carbon 0.7.0 into work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/reg/rotor-carbon/0.7.0
[INFO] validating manifest of rotor-carbon-0.7.0 on toolchain master#a850a426491e14186af2250549bf41256b5938d2
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rotor-carbon-0.7.0 on toolchain try#06a150c7d11500b41499224f165e9de1de096768
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rotor-carbon-0.7.0
[INFO] finished frobbing rotor-carbon-0.7.0
[INFO] frobbed toml for rotor-carbon-0.7.0 written to work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/reg/rotor-carbon/0.7.0/Cargo.toml
[INFO] started frobbing rotor-carbon-0.7.0
[INFO] finished frobbing rotor-carbon-0.7.0
[INFO] frobbed toml for rotor-carbon-0.7.0 written to work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/reg/rotor-carbon/0.7.0/Cargo.toml
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking rotor-carbon-0.7.0 against try#06a150c7d11500b41499224f165e9de1de096768 for pr-60162
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60162/worker-4/try#06a150c7d11500b41499224f165e9de1de096768:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/reg/rotor-carbon/0.7.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] aefd4549c9a84c8fd15c9ba85aa2f89131e93ab9bc2224f6f86a8a3fed9248cf
[INFO] running `"docker" "start" "-a" "aefd4549c9a84c8fd15c9ba85aa2f89131e93ab9bc2224f6f86a8a3fed9248cf"`
[INFO] [stderr]     Checking rotor v0.6.3
[INFO] [stderr]     Checking rotor-tools v0.3.2
[INFO] [stderr]     Checking rotor-stream v0.6.2
[INFO] [stderr]     Checking rotor-carbon v0.7.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/sender.rs:19:17
[INFO] [stderr]    |
[INFO] [stderr] 19 |             let mut buf = trans.output();
[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/sender.rs:19:17
[INFO] [stderr]    |
[INFO] [stderr] 19 |             let mut buf = trans.output();
[INFO] [stderr]    |                 ----^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/sender.rs:32:17
[INFO] [stderr]    |
[INFO] [stderr] 32 |             let mut buf = trans.output();
[INFO] [stderr]    |                 ----^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/sender.rs:19:17
[INFO] [stderr]    |
[INFO] [stderr] 19 |             let mut buf = trans.output();
[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/sender.rs:19:17
[INFO] [stderr]    |
[INFO] [stderr] 19 |             let mut buf = trans.output();
[INFO] [stderr]    |                 ----^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/sender.rs:32:17
[INFO] [stderr]    |
[INFO] [stderr] 32 |             let mut buf = trans.output();
[INFO] [stderr]    |                 ----^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.57s
[INFO] running `"docker" "inspect" "aefd4549c9a84c8fd15c9ba85aa2f89131e93ab9bc2224f6f86a8a3fed9248cf"`
[INFO] running `"docker" "rm" "-f" "aefd4549c9a84c8fd15c9ba85aa2f89131e93ab9bc2224f6f86a8a3fed9248cf"`
[INFO] [stdout] aefd4549c9a84c8fd15c9ba85aa2f89131e93ab9bc2224f6f86a8a3fed9248cf