[INFO] crate rust-rocket 0.3.5 is already in cache
[INFO] extracting crate rust-rocket 0.3.5 into work/ex/pr-60261/sources/master#1891bfa80364eead426517c68de6947b7692e2de/reg/rust-rocket/0.3.5
[INFO] extracting crate rust-rocket 0.3.5 into work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/reg/rust-rocket/0.3.5
[INFO] validating manifest of rust-rocket-0.3.5 on toolchain master#1891bfa80364eead426517c68de6947b7692e2de
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1891bfa80364eead426517c68de6947b7692e2de-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rust-rocket-0.3.5 on toolchain try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bfdcf6db3afcce5fe4013023cfa8ba359c5d527a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rust-rocket-0.3.5
[INFO] finished frobbing rust-rocket-0.3.5
[INFO] frobbed toml for rust-rocket-0.3.5 written to work/ex/pr-60261/sources/master#1891bfa80364eead426517c68de6947b7692e2de/reg/rust-rocket/0.3.5/Cargo.toml
[INFO] started frobbing rust-rocket-0.3.5
[INFO] finished frobbing rust-rocket-0.3.5
[INFO] frobbed toml for rust-rocket-0.3.5 written to work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/reg/rust-rocket/0.3.5/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1891bfa80364eead426517c68de6947b7692e2de-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bfdcf6db3afcce5fe4013023cfa8ba359c5d527a-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1891bfa80364eead426517c68de6947b7692e2de-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bfdcf6db3afcce5fe4013023cfa8ba359c5d527a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking rust-rocket-0.3.5 against try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a for pr-60261
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60261/worker-2/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/reg/rust-rocket/0.3.5:/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" "+bfdcf6db3afcce5fe4013023cfa8ba359c5d527a-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 5dff93f0b869c3dd73281b6d6d84fbad4894b7b8389111357ee9c9ff2da25789
[INFO] running `"docker" "start" "-a" "5dff93f0b869c3dd73281b6d6d84fbad4894b7b8389111357ee9c9ff2da25789"`
[INFO] [stderr]     Checking rust-rocket v0.3.5 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/client.rs:232:33
[INFO] [stderr]     |
[INFO] [stderr] 232 |                             let mut track =
[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/client.rs:242:33
[INFO] [stderr]     |
[INFO] [stderr] 242 |                             let mut track =
[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/client.rs:232:33
[INFO] [stderr]     |
[INFO] [stderr] 232 |                             let mut track =
[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/client.rs:242:33
[INFO] [stderr]     |
[INFO] [stderr] 242 |                             let mut track =
[INFO] [stderr]     |                                 ----^^^^^
[INFO] [stderr]     |                                 |
[INFO] [stderr]     |                                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.31s
[INFO] running `"docker" "inspect" "5dff93f0b869c3dd73281b6d6d84fbad4894b7b8389111357ee9c9ff2da25789"`
[INFO] running `"docker" "rm" "-f" "5dff93f0b869c3dd73281b6d6d84fbad4894b7b8389111357ee9c9ff2da25789"`
[INFO] [stdout] 5dff93f0b869c3dd73281b6d6d84fbad4894b7b8389111357ee9c9ff2da25789