[INFO] updating cached repository jxcl/rdb
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jxcl/rdb
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jxcl/rdb" "work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/gh/jxcl/rdb"`
[INFO] [stderr] Cloning into 'work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/gh/jxcl/rdb'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jxcl/rdb" "work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/gh/jxcl/rdb"`
[INFO] [stderr] Cloning into 'work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/gh/jxcl/rdb'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 037a04cee00795ba569a2f29493608e02d244836
[INFO] sha for GitHub repo jxcl/rdb: 037a04cee00795ba569a2f29493608e02d244836
[INFO] validating manifest of jxcl/rdb on toolchain master#6ea4036cd20a4b1ab1d56e555108c21735ff6946
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ea4036cd20a4b1ab1d56e555108c21735ff6946-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of jxcl/rdb on toolchain try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+003a7b6b5753e8509fdfe7949d4f0873ba71e4fc-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing jxcl/rdb
[INFO] finished frobbing jxcl/rdb
[INFO] frobbed toml for jxcl/rdb written to work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/gh/jxcl/rdb/Cargo.toml
[INFO] started frobbing jxcl/rdb
[INFO] finished frobbing jxcl/rdb
[INFO] frobbed toml for jxcl/rdb written to work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/gh/jxcl/rdb/Cargo.toml
[INFO] crate jxcl/rdb already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ea4036cd20a4b1ab1d56e555108c21735ff6946-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+003a7b6b5753e8509fdfe7949d4f0873ba71e4fc-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking jxcl/rdb against try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc for pr-62181
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62181/worker-4/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/gh/jxcl/rdb:/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=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" "+003a7b6b5753e8509fdfe7949d4f0873ba71e4fc-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 7b81ce9ec6c76dd102581869376774996388b66f6852973fed6a511816f56e29
[INFO] running `"docker" "start" "-a" "7b81ce9ec6c76dd102581869376774996388b66f6852973fed6a511816f56e29"`
[INFO] [stderr]     Checking rdb v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/connection.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/connection.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]   --> src/connection.rs:66:19
[INFO] [stderr]    |
[INFO] [stderr] 66 |     fn get(&self, key: &str) -> Option<&String> {
[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: unused variable: `i`
[INFO] [stderr]   --> src/btree.rs:97:13
[INFO] [stderr]    |
[INFO] [stderr] 97 |         for i in 0..right_pad_members {
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]    --> src/btree.rs:195:37
[INFO] [stderr]     |
[INFO] [stderr] 195 |     fn search_for_insert(&mut self, key: &str, index: u32) -> Result<TreeNode, io::Error> {
[INFO] [stderr]     |                                     ^^^ help: consider prefixing with an underscore: `_key`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `root_node`
[INFO] [stderr]    --> src/btree.rs:151:5
[INFO] [stderr]     |
[INFO] [stderr] 151 |     root_node: TreeNode,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `open`
[INFO] [stderr]    --> src/btree.rs:156:5
[INFO] [stderr]     |
[INFO] [stderr] 156 |     pub fn open(filename: &str) -> Result<BTree, io::Error> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]   --> src/connection.rs:66:19
[INFO] [stderr]    |
[INFO] [stderr] 66 |     fn get(&self, key: &str) -> Option<&String> {
[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: unused variable: `i`
[INFO] [stderr]   --> src/btree.rs:97:13
[INFO] [stderr]    |
[INFO] [stderr] 97 |         for i in 0..right_pad_members {
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]    --> src/btree.rs:195:37
[INFO] [stderr]     |
[INFO] [stderr] 195 |     fn search_for_insert(&mut self, key: &str, index: u32) -> Result<TreeNode, io::Error> {
[INFO] [stderr]     |                                     ^^^ help: consider prefixing with an underscore: `_key`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `open`
[INFO] [stderr]    --> src/btree.rs:156:5
[INFO] [stderr]     |
[INFO] [stderr] 156 |     pub fn open(filename: &str) -> Result<BTree, io::Error> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.17s
[INFO] running `"docker" "inspect" "7b81ce9ec6c76dd102581869376774996388b66f6852973fed6a511816f56e29"`
[INFO] running `"docker" "rm" "-f" "7b81ce9ec6c76dd102581869376774996388b66f6852973fed6a511816f56e29"`
[INFO] [stdout] 7b81ce9ec6c76dd102581869376774996388b66f6852973fed6a511816f56e29