[INFO] crate concache 0.2.1 is already in cache
[INFO] extracting crate concache 0.2.1 into work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/concache/0.2.1
[INFO] extracting crate concache 0.2.1 into work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/reg/concache/0.2.1
[INFO] validating manifest of concache-0.2.1 on toolchain master#39401465da4ce27aeeb2c2a26133ac35c63aa515
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of concache-0.2.1 on toolchain try#f45cc3094ee337acd688771b9234318046b0572d
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing concache-0.2.1
[INFO] finished frobbing concache-0.2.1
[INFO] frobbed toml for concache-0.2.1 written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/concache/0.2.1/Cargo.toml
[INFO] started frobbing concache-0.2.1
[INFO] finished frobbing concache-0.2.1
[INFO] frobbed toml for concache-0.2.1 written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/reg/concache/0.2.1/Cargo.toml
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking concache-0.2.1 against try#f45cc3094ee337acd688771b9234318046b0572d for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-0/try#f45cc3094ee337acd688771b9234318046b0572d:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/reg/concache/0.2.1:/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" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 3bb2b2e367c7bddde0ce80342935ba0d69a03f030e5b0356ca565bd950ec7793
[INFO] running `"docker" "start" "-a" "3bb2b2e367c7bddde0ce80342935ba0d69a03f030e5b0356ca565bd950ec7793"`
[INFO] [stderr]     Checking concache v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/crossbeam/linked_list.rs:49:25
[INFO] [stderr]    |
[INFO] [stderr] 49 |                     let mut raw = k.as_raw();
[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/crossbeam/linked_list.rs:50:25
[INFO] [stderr]    |
[INFO] [stderr] 50 |                     let mut cur = unsafe { &*raw };
[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/crossbeam/linked_list.rs:55:29
[INFO] [stderr]    |
[INFO] [stderr] 55 |                         let mut ins = Owned::new(kv.1);
[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/crossbeam/linked_list.rs:63:29
[INFO] [stderr]    |
[INFO] [stderr] 63 |                         let mut ins = Owned::new(Node::new(kv.0, kv.1));
[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/crossbeam/linked_list.rs:71:25
[INFO] [stderr]    |
[INFO] [stderr] 71 |                     let mut ins = Owned::new(Node::new(kv.0, kv.1));
[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/crossbeam/linked_list.rs:86:25
[INFO] [stderr]    |
[INFO] [stderr] 86 |                     let mut raw = k.as_raw();
[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/crossbeam/linked_list.rs:87:25
[INFO] [stderr]    |
[INFO] [stderr] 87 |                     let mut cur = unsafe { &*raw };
[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/crossbeam/linked_list.rs:108:25
[INFO] [stderr]     |
[INFO] [stderr] 108 |                     let mut raw = k.as_raw();
[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/crossbeam/linked_list.rs:109:25
[INFO] [stderr]     |
[INFO] [stderr] 109 |                     let mut cur = unsafe { &*raw };
[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/crossbeam/linked_list.rs:118:29
[INFO] [stderr]     |
[INFO] [stderr] 118 |                         let mut new_node = match node.load(Ordering::SeqCst, &guard) {
[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/crossbeam/linked_list.rs:124:29
[INFO] [stderr]     |
[INFO] [stderr] 124 |                         let mut new_node_raw_cur = unsafe { &*new_node.as_raw() };
[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/crossbeam/linked_list.rs:157:17
[INFO] [stderr]     |
[INFO] [stderr] 157 |             let mut raw = k.as_raw();
[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/crossbeam/linked_list.rs:158:17
[INFO] [stderr]     |
[INFO] [stderr] 158 |             let mut cur = unsafe { &*raw };
[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/crossbeam/linked_list.rs:49:25
[INFO] [stderr]    |
[INFO] [stderr] 49 |                     let mut raw = k.as_raw();
[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/crossbeam/linked_list.rs:50:25
[INFO] [stderr]    |
[INFO] [stderr] 50 |                     let mut cur = unsafe { &*raw };
[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/crossbeam/linked_list.rs:55:29
[INFO] [stderr]    |
[INFO] [stderr] 55 |                         let mut ins = Owned::new(kv.1);
[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/crossbeam/linked_list.rs:63:29
[INFO] [stderr]    |
[INFO] [stderr] 63 |                         let mut ins = Owned::new(Node::new(kv.0, kv.1));
[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/crossbeam/linked_list.rs:71:25
[INFO] [stderr]    |
[INFO] [stderr] 71 |                     let mut ins = Owned::new(Node::new(kv.0, kv.1));
[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/crossbeam/linked_list.rs:86:25
[INFO] [stderr]    |
[INFO] [stderr] 86 |                     let mut raw = k.as_raw();
[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/crossbeam/linked_list.rs:87:25
[INFO] [stderr]    |
[INFO] [stderr] 87 |                     let mut cur = unsafe { &*raw };
[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/crossbeam/linked_list.rs:108:25
[INFO] [stderr]     |
[INFO] [stderr] 108 |                     let mut raw = k.as_raw();
[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/crossbeam/linked_list.rs:109:25
[INFO] [stderr]     |
[INFO] [stderr] 109 |                     let mut cur = unsafe { &*raw };
[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/crossbeam/linked_list.rs:118:29
[INFO] [stderr]     |
[INFO] [stderr] 118 |                         let mut new_node = match node.load(Ordering::SeqCst, &guard) {
[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/crossbeam/linked_list.rs:124:29
[INFO] [stderr]     |
[INFO] [stderr] 124 |                         let mut new_node_raw_cur = unsafe { &*new_node.as_raw() };
[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/crossbeam/linked_list.rs:157:17
[INFO] [stderr]     |
[INFO] [stderr] 157 |             let mut raw = k.as_raw();
[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/crossbeam/linked_list.rs:158:17
[INFO] [stderr]     |
[INFO] [stderr] 158 |             let mut cur = unsafe { &*raw };
[INFO] [stderr]     |                 ----^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.24s
[INFO] running `"docker" "inspect" "3bb2b2e367c7bddde0ce80342935ba0d69a03f030e5b0356ca565bd950ec7793"`
[INFO] running `"docker" "rm" "-f" "3bb2b2e367c7bddde0ce80342935ba0d69a03f030e5b0356ca565bd950ec7793"`
[INFO] [stdout] 3bb2b2e367c7bddde0ce80342935ba0d69a03f030e5b0356ca565bd950ec7793