[INFO] fetching crate rotor-carbon 0.7.0...
[INFO] checking rotor-carbon-0.7.0 against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] extracting crate rotor-carbon 0.7.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate rotor-carbon 0.7.0 on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate rotor-carbon 0.7.0
[INFO] finished tweaking crates.io crate rotor-carbon 0.7.0
[INFO] tweaked toml for crates.io crate rotor-carbon 0.7.0 written to /workspace/builds/worker-6/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 59050ed8ccfc12e6357b09a422fe23298e3cd063b6511691025d3bbfb96b6b94
[INFO] running `"docker" "start" "-a" "59050ed8ccfc12e6357b09a422fe23298e3cd063b6511691025d3bbfb96b6b94"`
[INFO] [stderr]     Checking quick-error v0.2.2
[INFO] [stderr]     Checking netbuf v0.3.8
[INFO] [stderr]     Checking argparse v0.2.2
[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/rustwide/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] 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 3.52s
[INFO] running `"docker" "inspect" "59050ed8ccfc12e6357b09a422fe23298e3cd063b6511691025d3bbfb96b6b94"`
[INFO] running `"docker" "rm" "-f" "59050ed8ccfc12e6357b09a422fe23298e3cd063b6511691025d3bbfb96b6b94"`
[INFO] [stdout] 59050ed8ccfc12e6357b09a422fe23298e3cd063b6511691025d3bbfb96b6b94