[INFO] crate follow 0.1.5 is already in cache
[INFO] extracting crate follow 0.1.5 into work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/reg/follow/0.1.5
[INFO] extracting crate follow 0.1.5 into work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/reg/follow/0.1.5
[INFO] validating manifest of follow-0.1.5 on toolchain master#d99a320cba42f661aebfa1293b7b2ec3603dda75
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of follow-0.1.5 on toolchain try#e70472fc501b855c9080f3772432c10fe20b8866
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing follow-0.1.5
[INFO] finished frobbing follow-0.1.5
[INFO] frobbed toml for follow-0.1.5 written to work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/reg/follow/0.1.5/Cargo.toml
[INFO] started frobbing follow-0.1.5
[INFO] finished frobbing follow-0.1.5
[INFO] frobbed toml for follow-0.1.5 written to work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/reg/follow/0.1.5/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking follow-0.1.5 against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-6/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/reg/follow/0.1.5:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 435bda6604fd09dc25943c281763d55aa23b6752f295cd0de0482e281bf1630a
[INFO] running `"docker" "start" "-a" "435bda6604fd09dc25943c281763d55aa23b6752f295cd0de0482e281bf1630a"`
[INFO] [stderr]     Checking terminal_size v0.1.8
[INFO] [stderr]     Checking fern v0.3.5
[INFO] [stderr]     Checking docopt v0.7.0
[INFO] [stderr]     Checking follow v0.1.5 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/worker.rs:180:27
[INFO] [stderr]     |
[INFO] [stderr] 180 |                 return Ok((cursor..len));
[INFO] [stderr]     |                           ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/worker.rs:189:27
[INFO] [stderr]     |
[INFO] [stderr] 189 |                 return Ok((0..len));
[INFO] [stderr]     |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/worker.rs:180:27
[INFO] [stderr]     |
[INFO] [stderr] 180 |                 return Ok((cursor..len));
[INFO] [stderr]     |                           ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/worker.rs:189:27
[INFO] [stderr]     |
[INFO] [stderr] 189 |                 return Ok((0..len));
[INFO] [stderr]     |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/worker.rs:658:46
[INFO] [stderr]     |
[INFO] [stderr] 658 |             let content = build_sized_string((((BUFFER_SIZE as usize) * 2) - 1));
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_verbose`
[INFO] [stderr]   --> src/args.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     pub fn is_verbose(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_verbose`
[INFO] [stderr]   --> src/args.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     pub fn is_verbose(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.45s
[INFO] running `"docker" "inspect" "435bda6604fd09dc25943c281763d55aa23b6752f295cd0de0482e281bf1630a"`
[INFO] running `"docker" "rm" "-f" "435bda6604fd09dc25943c281763d55aa23b6752f295cd0de0482e281bf1630a"`
[INFO] [stdout] 435bda6604fd09dc25943c281763d55aa23b6752f295cd0de0482e281bf1630a