[INFO] fetching crate rotor-carbon 0.7.0...
[INFO] extracting crate rotor-carbon 0.7.0 into work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/rotor-carbon/0.7.0
[INFO] extracting crate rotor-carbon 0.7.0 into work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/rotor-carbon/0.7.0
[INFO] validating manifest of rotor-carbon-0.7.0 on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rotor-carbon-0.7.0 on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-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-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/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-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/rotor-carbon/0.7.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] building rotor-carbon-0.7.0 against master#c8865d8e195813ade6b84434ac9f8850e7112d1a for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-4/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/rotor-carbon/0.7.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "build" "--frozen"`
[INFO] [stdout] 98323c0dae3b46657f4e1d4f3c2121b8e7de99967bf2d2849a9b6619cece931f
[INFO] running `"docker" "start" "-a" "98323c0dae3b46657f4e1d4f3c2121b8e7de99967bf2d2849a9b6619cece931f"`
[INFO] [stderr]    Compiling quick-error v0.2.2
[INFO] [stderr]    Compiling netbuf v0.3.8
[INFO] [stderr]    Compiling rotor v0.6.3
[INFO] [stderr]    Compiling rotor-tools v0.3.2
[INFO] [stderr]    Compiling rotor-stream v0.6.2
[INFO] [stderr]    Compiling rotor-carbon v0.7.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/proto.rs:66:23
[INFO] [stderr]    |
[INFO] [stderr] 66 |         -> Option<Box<Error>>
[INFO] [stderr]    |                       ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] 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]    = note: #[warn(unused_mut)] on by default
[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 4.84s
[INFO] running `"docker" "inspect" "98323c0dae3b46657f4e1d4f3c2121b8e7de99967bf2d2849a9b6619cece931f"`
[INFO] running `"docker" "rm" "-f" "98323c0dae3b46657f4e1d4f3c2121b8e7de99967bf2d2849a9b6619cece931f"`
[INFO] [stdout] 98323c0dae3b46657f4e1d4f3c2121b8e7de99967bf2d2849a9b6619cece931f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-4/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/rotor-carbon/0.7.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] a3c52350d3b46e9bc5ff5b05f1103933a8f3efe3a56d77374d57ff671c94d783
[INFO] running `"docker" "start" "-a" "a3c52350d3b46e9bc5ff5b05f1103933a8f3efe3a56d77374d57ff671c94d783"`
[INFO] [stderr]    Compiling argparse v0.2.2
[INFO] [stderr]    Compiling rotor-carbon v0.7.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/proto.rs:66:23
[INFO] [stderr]    |
[INFO] [stderr] 66 |         -> Option<Box<Error>>
[INFO] [stderr]    |                       ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] 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]    = note: #[warn(unused_mut)] on by default
[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 4.86s
[INFO] running `"docker" "inspect" "a3c52350d3b46e9bc5ff5b05f1103933a8f3efe3a56d77374d57ff671c94d783"`
[INFO] running `"docker" "rm" "-f" "a3c52350d3b46e9bc5ff5b05f1103933a8f3efe3a56d77374d57ff671c94d783"`
[INFO] [stdout] a3c52350d3b46e9bc5ff5b05f1103933a8f3efe3a56d77374d57ff671c94d783