[INFO] fetching crate ropey 1.0.1...
[INFO] extracting crate ropey 1.0.1 into work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/ropey/1.0.1
[INFO] extracting crate ropey 1.0.1 into work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/ropey/1.0.1
[INFO] validating manifest of ropey-1.0.1 on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ropey-1.0.1 on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ropey-1.0.1
[INFO] finished frobbing ropey-1.0.1
[INFO] frobbed toml for ropey-1.0.1 written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/ropey/1.0.1/Cargo.toml
[INFO] started frobbing ropey-1.0.1
[INFO] finished frobbing ropey-1.0.1
[INFO] frobbed toml for ropey-1.0.1 written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/ropey/1.0.1/Cargo.toml
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking ropey-1.0.1 against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-4/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/ropey/1.0.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 9761101b156b8af1f49f18d2c9fd4d0464f904bf5e6420a30b217f0b34bc014c
[INFO] running `"docker" "start" "-a" "9761101b156b8af1f49f18d2c9fd4d0464f904bf5e6420a30b217f0b34bc014c"`
[INFO] [stderr]     Checking bencher v0.1.5
[INFO] [stderr]     Checking ropey v1.0.1 (/opt/crater/workdir)
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking rusty-fork v0.2.2
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/rope.rs:1217:29
[INFO] [stderr]      |
[INFO] [stderr] 1217 |                         let mut root = Arc::make_mut(&mut rope.root);
[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/rope.rs:1227:29
[INFO] [stderr]      |
[INFO] [stderr] 1227 |                         let mut root = Arc::make_mut(&mut rope.root);
[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/tree/node.rs:96:30
[INFO] [stderr]    |
[INFO] [stderr] 96 |                 let (l_info, mut residual) = Arc::make_mut(&mut children.nodes_mut()[child_i])
[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/tree/node.rs:201:21
[INFO] [stderr]     |
[INFO] [stderr] 201 |                 let mut handle_child = |children: &mut NodeChildren,
[INFO] [stderr]     |                     ----^^^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Checking proptest v0.8.7
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/iter.rs:723:42
[INFO] [stderr]     |
[INFO] [stderr] 723 |             assert_eq!(liner.to_string().trim_right(), linet);
[INFO] [stderr]     |                                          ^^^^^^^^^^ help: replace the use of the deprecated item: `trim_end`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/rope.rs:1217:29
[INFO] [stderr]      |
[INFO] [stderr] 1217 |                         let mut root = Arc::make_mut(&mut rope.root);
[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/rope.rs:1227:29
[INFO] [stderr]      |
[INFO] [stderr] 1227 |                         let mut root = Arc::make_mut(&mut rope.root);
[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/tree/node.rs:96:30
[INFO] [stderr]    |
[INFO] [stderr] 96 |                 let (l_info, mut residual) = Arc::make_mut(&mut children.nodes_mut()[child_i])
[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/tree/node.rs:201:21
[INFO] [stderr]     |
[INFO] [stderr] 201 |                 let mut handle_child = |children: &mut NodeChildren,
[INFO] [stderr]     |                     ----^^^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.99s
[INFO] running `"docker" "inspect" "9761101b156b8af1f49f18d2c9fd4d0464f904bf5e6420a30b217f0b34bc014c"`
[INFO] running `"docker" "rm" "-f" "9761101b156b8af1f49f18d2c9fd4d0464f904bf5e6420a30b217f0b34bc014c"`
[INFO] [stdout] 9761101b156b8af1f49f18d2c9fd4d0464f904bf5e6420a30b217f0b34bc014c