[INFO] updating cached repository craftytrickster/Dedupe-Contacts
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/craftytrickster/Dedupe-Contacts
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/craftytrickster/Dedupe-Contacts" "work/ex/beta-1.37-6/sources/1.36.0/gh/craftytrickster/Dedupe-Contacts"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/craftytrickster/Dedupe-Contacts'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/craftytrickster/Dedupe-Contacts" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/craftytrickster/Dedupe-Contacts"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/craftytrickster/Dedupe-Contacts'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d5ec8b0c8ddc3f9d8b40121833b9d0ba19b10f7a
[INFO] sha for GitHub repo craftytrickster/Dedupe-Contacts: d5ec8b0c8ddc3f9d8b40121833b9d0ba19b10f7a
[INFO] validating manifest of craftytrickster/Dedupe-Contacts on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of craftytrickster/Dedupe-Contacts on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing craftytrickster/Dedupe-Contacts
[INFO] finished frobbing craftytrickster/Dedupe-Contacts
[INFO] frobbed toml for craftytrickster/Dedupe-Contacts written to work/ex/beta-1.37-6/sources/1.36.0/gh/craftytrickster/Dedupe-Contacts/Cargo.toml
[INFO] started frobbing craftytrickster/Dedupe-Contacts
[INFO] finished frobbing craftytrickster/Dedupe-Contacts
[INFO] frobbed toml for craftytrickster/Dedupe-Contacts written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/craftytrickster/Dedupe-Contacts/Cargo.toml
[INFO] crate craftytrickster/Dedupe-Contacts already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing craftytrickster/Dedupe-Contacts against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/craftytrickster/Dedupe-Contacts:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] fba15477d5a02a53f0f8d91b30566dbd2f3e4cd39208e69609f0ee6708718ebc
[INFO] running `"docker" "start" "-a" "fba15477d5a02a53f0f8d91b30566dbd2f3e4cd39208e69609f0ee6708718ebc"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]    Compiling fst v0.3.0
[INFO] [stderr]    Compiling csv v0.15.0
[INFO] [stderr]    Compiling fst-levenshtein v0.2.0
[INFO] [stderr]    Compiling dedupe v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/execution.rs:57:25
[INFO] [stderr]    |
[INFO] [stderr] 57 |                     let mut confirmed_list = confirmed_duplicates.entry(entry.id).or_insert(Vec::new());
[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/searchable.rs:60:18
[INFO] [stderr]    |
[INFO] [stderr] 60 |             for (mut map, col_item) in map_per_column_list.iter_mut().zip(entry.row.iter()) {
[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/searchable.rs:63:25
[INFO] [stderr]    |
[INFO] [stderr] 63 |                     let mut list = map.entry(key).or_insert(Vec::new());
[INFO] [stderr]    |                         ----^^^^
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.85s
[INFO] running `"docker" "inspect" "fba15477d5a02a53f0f8d91b30566dbd2f3e4cd39208e69609f0ee6708718ebc"`
[INFO] running `"docker" "rm" "-f" "fba15477d5a02a53f0f8d91b30566dbd2f3e4cd39208e69609f0ee6708718ebc"`
[INFO] [stdout] fba15477d5a02a53f0f8d91b30566dbd2f3e4cd39208e69609f0ee6708718ebc
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/craftytrickster/Dedupe-Contacts:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 7fd2e243b84e346c0934a18578fe7e1c3724f0f4c04b48a3aeabb45e80e5ebbd
[INFO] running `"docker" "start" "-a" "7fd2e243b84e346c0934a18578fe7e1c3724f0f4c04b48a3aeabb45e80e5ebbd"`
[INFO] [stderr]    Compiling dedupe v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/execution.rs:57:25
[INFO] [stderr]    |
[INFO] [stderr] 57 |                     let mut confirmed_list = confirmed_duplicates.entry(entry.id).or_insert(Vec::new());
[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/searchable.rs:60:18
[INFO] [stderr]    |
[INFO] [stderr] 60 |             for (mut map, col_item) in map_per_column_list.iter_mut().zip(entry.row.iter()) {
[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/searchable.rs:63:25
[INFO] [stderr]    |
[INFO] [stderr] 63 |                     let mut list = map.entry(key).or_insert(Vec::new());
[INFO] [stderr]    |                         ----^^^^
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.17s
[INFO] running `"docker" "inspect" "7fd2e243b84e346c0934a18578fe7e1c3724f0f4c04b48a3aeabb45e80e5ebbd"`
[INFO] running `"docker" "rm" "-f" "7fd2e243b84e346c0934a18578fe7e1c3724f0f4c04b48a3aeabb45e80e5ebbd"`
[INFO] [stdout] 7fd2e243b84e346c0934a18578fe7e1c3724f0f4c04b48a3aeabb45e80e5ebbd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/craftytrickster/Dedupe-Contacts:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] e37b03c55830681bb0e214eeb5ace0aa423a1f2226be8002e46a54dcbb37780b
[INFO] running `"docker" "start" "-a" "e37b03c55830681bb0e214eeb5ace0aa423a1f2226be8002e46a54dcbb37780b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/dedupe-d675013584cf94f4
[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" "e37b03c55830681bb0e214eeb5ace0aa423a1f2226be8002e46a54dcbb37780b"`
[INFO] running `"docker" "rm" "-f" "e37b03c55830681bb0e214eeb5ace0aa423a1f2226be8002e46a54dcbb37780b"`
[INFO] [stdout] e37b03c55830681bb0e214eeb5ace0aa423a1f2226be8002e46a54dcbb37780b