[INFO] cloning repository nokaa/patricia-trie
[INFO] running `"git" "clone" "--bare" "git://github.com/nokaa/patricia-trie.git" "work/cache/sources/gh/nokaa/patricia-trie"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/nokaa/patricia-trie'...
[INFO] running `"git" "clone" "work/cache/sources/gh/nokaa/patricia-trie" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/nokaa/patricia-trie"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/nokaa/patricia-trie'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/nokaa/patricia-trie" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/nokaa/patricia-trie"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/nokaa/patricia-trie'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3123be647a8c692b3b93d5779a6f6c431f7212f0
[INFO] sha for GitHub repo nokaa/patricia-trie: 3123be647a8c692b3b93d5779a6f6c431f7212f0
[INFO] validating manifest of nokaa/patricia-trie 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 nokaa/patricia-trie 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 nokaa/patricia-trie
[INFO] finished frobbing nokaa/patricia-trie
[INFO] frobbed toml for nokaa/patricia-trie written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/nokaa/patricia-trie/Cargo.toml
[INFO] started frobbing nokaa/patricia-trie
[INFO] finished frobbing nokaa/patricia-trie
[INFO] frobbed toml for nokaa/patricia-trie written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/nokaa/patricia-trie/Cargo.toml
[INFO] crate nokaa/patricia-trie 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking nokaa/patricia-trie against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-2/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/nokaa/patricia-trie:/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] 85fdda4e241c4cb9f98ca6d06ea524ec44f8a68da561d00b6a8ab20a3d94e9bb
[INFO] running `"docker" "start" "-a" "85fdda4e241c4cb9f98ca6d06ea524ec44f8a68da561d00b6a8ab20a3d94e9bb"`
[INFO] [stderr]     Checking patricia-trie v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]    --> src/node.rs:160:30
[INFO] [stderr]     |
[INFO] [stderr] 160 |     pub fn delete(&mut self, key: &[u8]) {}
[INFO] [stderr]     |                              ^^^ help: consider prefixing with an underscore: `_key`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:45:17
[INFO] [stderr]    |
[INFO] [stderr] 45 |             for mut node in &mut self.children {
[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/lib.rs:63:13
[INFO] [stderr]    |
[INFO] [stderr] 63 |         for mut node in &mut self.children {
[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/node.rs:146:13
[INFO] [stderr]     |
[INFO] [stderr] 146 |         for mut child in &mut self.children {
[INFO] [stderr]     |             ----^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]    --> src/node.rs:160:30
[INFO] [stderr]     |
[INFO] [stderr] 160 |     pub fn delete(&mut self, key: &[u8]) {}
[INFO] [stderr]     |                              ^^^ help: consider prefixing with an underscore: `_key`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:45:17
[INFO] [stderr]    |
[INFO] [stderr] 45 |             for mut node in &mut self.children {
[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/lib.rs:63:13
[INFO] [stderr]    |
[INFO] [stderr] 63 |         for mut node in &mut self.children {
[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/node.rs:146:13
[INFO] [stderr]     |
[INFO] [stderr] 146 |         for mut child in &mut self.children {
[INFO] [stderr]     |             ----^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `"docker" "inspect" "85fdda4e241c4cb9f98ca6d06ea524ec44f8a68da561d00b6a8ab20a3d94e9bb"`
[INFO] running `"docker" "rm" "-f" "85fdda4e241c4cb9f98ca6d06ea524ec44f8a68da561d00b6a8ab20a3d94e9bb"`
[INFO] [stdout] 85fdda4e241c4cb9f98ca6d06ea524ec44f8a68da561d00b6a8ab20a3d94e9bb