[INFO] updating cached repository nokaa/patricia-trie
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/nokaa/patricia-trie
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/nokaa/patricia-trie" "work/ex/beta-1.38-1/sources/1.37.0/gh/nokaa/patricia-trie"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/nokaa/patricia-trie'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/nokaa/patricia-trie" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nokaa/patricia-trie"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/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 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of nokaa/patricia-trie on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "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/beta-1.38-1/sources/1.37.0/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/beta-1.38-1/sources/beta-2019-08-13/gh/nokaa/patricia-trie/Cargo.toml
[INFO] crate nokaa/patricia-trie already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing nokaa/patricia-trie against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/nokaa/patricia-trie:/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 99f5bf530f80b59fc4da090ea06501f68939859957e2715682b9414e800e102a
[INFO] running `"docker" "start" "-a" "99f5bf530f80b59fc4da090ea06501f68939859957e2715682b9414e800e102a"`
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `"docker" "inspect" "99f5bf530f80b59fc4da090ea06501f68939859957e2715682b9414e800e102a"`
[INFO] running `"docker" "rm" "-f" "99f5bf530f80b59fc4da090ea06501f68939859957e2715682b9414e800e102a"`
[INFO] [stdout] 99f5bf530f80b59fc4da090ea06501f68939859957e2715682b9414e800e102a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/nokaa/patricia-trie:/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 4f721c482f657eb83323d4361940963a1653ee4aa28677fb2733c87351a53258
[INFO] running `"docker" "start" "-a" "4f721c482f657eb83323d4361940963a1653ee4aa28677fb2733c87351a53258"`
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `"docker" "inspect" "4f721c482f657eb83323d4361940963a1653ee4aa28677fb2733c87351a53258"`
[INFO] running `"docker" "rm" "-f" "4f721c482f657eb83323d4361940963a1653ee4aa28677fb2733c87351a53258"`
[INFO] [stdout] 4f721c482f657eb83323d4361940963a1653ee4aa28677fb2733c87351a53258
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/nokaa/patricia-trie:/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=warn" "-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 43905c59ae7de554daf0c91ecbb4d14bfb9b366c5466ee5f1133ce1bd79d6f73
[INFO] running `"docker" "start" "-a" "43905c59ae7de554daf0c91ecbb4d14bfb9b366c5466ee5f1133ce1bd79d6f73"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/patricia_trie-f25784528975effd
[INFO] [stdout] running 3 tests
[INFO] [stderr]    Doc-tests patricia-trie
[INFO] [stdout] test node::test::split_node ... ok
[INFO] [stdout] test node::test::single_insert ... ok
[INFO] [stdout] test node::test::multiple_insert ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "43905c59ae7de554daf0c91ecbb4d14bfb9b366c5466ee5f1133ce1bd79d6f73"`
[INFO] running `"docker" "rm" "-f" "43905c59ae7de554daf0c91ecbb4d14bfb9b366c5466ee5f1133ce1bd79d6f73"`
[INFO] [stdout] 43905c59ae7de554daf0c91ecbb4d14bfb9b366c5466ee5f1133ce1bd79d6f73