[INFO] cloning repository LFalch/key-layout
[INFO] running `"git" "clone" "--bare" "git://github.com/LFalch/key-layout.git" "work/cache/sources/gh/LFalch/key-layout"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/LFalch/key-layout'...
[INFO] running `"git" "clone" "work/cache/sources/gh/LFalch/key-layout" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/LFalch/key-layout"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/LFalch/key-layout'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/LFalch/key-layout" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/LFalch/key-layout"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/LFalch/key-layout'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b6330cf89682228073b882fbe1aa9affa7f8033c
[INFO] sha for GitHub repo LFalch/key-layout: b6330cf89682228073b882fbe1aa9affa7f8033c
[INFO] validating manifest of LFalch/key-layout 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 LFalch/key-layout 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 LFalch/key-layout
[INFO] finished frobbing LFalch/key-layout
[INFO] frobbed toml for LFalch/key-layout written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/LFalch/key-layout/Cargo.toml
[INFO] started frobbing LFalch/key-layout
[INFO] finished frobbing LFalch/key-layout
[INFO] frobbed toml for LFalch/key-layout written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/LFalch/key-layout/Cargo.toml
[INFO] crate LFalch/key-layout already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded utf16-ext v0.1.0
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking LFalch/key-layout 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/gh/LFalch/key-layout:/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] 8b808b52a8b57ab7e5a1e439d50f0b9c431306ecb0ba92ec3268e19e4d1f1451
[INFO] running `"docker" "start" "-a" "8b808b52a8b57ab7e5a1e439d50f0b9c431306ecb0ba92ec3268e19e4d1f1451"`
[INFO] [stderr]     Checking utf16-ext v0.1.0
[INFO] [stderr]     Checking serde-xml-rs v0.2.1
[INFO] [stderr]     Checking key-layout v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> src/klc.rs:166:74
[INFO] [stderr]     |
[INFO] [stderr] 166 |                     ret.deadkeys.get_mut(k)?.insert(read_char(args[0])?, (read_char(args[1])?));
[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 method argument
[INFO] [stderr]    --> src/klc.rs:166:74
[INFO] [stderr]     |
[INFO] [stderr] 166 |                     ret.deadkeys.get_mut(k)?.insert(read_char(args[0])?, (read_char(args[1])?));
[INFO] [stderr]     |                                                                          ^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `layout`
[INFO] [stderr]  --> src/convert.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |         layout,
[INFO] [stderr]   |         ^^^^^^ help: try ignoring the field: `layout: _`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `deadkeys`
[INFO] [stderr]  --> src/convert.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |         deadkeys,
[INFO] [stderr]   |         ^^^^^^^^ help: try ignoring the field: `deadkeys: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `keynames_dead`
[INFO] [stderr]  --> src/convert.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |         keynames_dead,
[INFO] [stderr]   |         ^^^^^^^^^^^^^ help: try ignoring the field: `keynames_dead: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `layout`
[INFO] [stderr]  --> src/convert.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |         layout,
[INFO] [stderr]   |         ^^^^^^ help: try ignoring the field: `layout: _`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `deadkeys`
[INFO] [stderr]  --> src/convert.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |         deadkeys,
[INFO] [stderr]   |         ^^^^^^^^ help: try ignoring the field: `deadkeys: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `keynames_dead`
[INFO] [stderr]  --> src/convert.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |         keynames_dead,
[INFO] [stderr]   |         ^^^^^^^^^^^^^ help: try ignoring the field: `keynames_dead: _`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/convert.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let mut key_maps: Vec<_> = (0..9).map(|i| KeyMap {
[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/convert.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let mut actions = vec![];
[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/convert.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let mut terminators = vec![];
[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/convert.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let mut key_maps: Vec<_> = (0..9).map(|i| KeyMap {
[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/convert.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let mut actions = vec![];
[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/convert.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let mut terminators = vec![];
[INFO] [stderr]    |         ----^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.42s
[INFO] running `"docker" "inspect" "8b808b52a8b57ab7e5a1e439d50f0b9c431306ecb0ba92ec3268e19e4d1f1451"`
[INFO] running `"docker" "rm" "-f" "8b808b52a8b57ab7e5a1e439d50f0b9c431306ecb0ba92ec3268e19e4d1f1451"`
[INFO] [stdout] 8b808b52a8b57ab7e5a1e439d50f0b9c431306ecb0ba92ec3268e19e4d1f1451