[INFO] updating cached repository studoot/duplicate-finder
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/studoot/duplicate-finder
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/studoot/duplicate-finder" "work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/studoot/duplicate-finder"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/studoot/duplicate-finder'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/studoot/duplicate-finder" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/studoot/duplicate-finder"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/studoot/duplicate-finder'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f1871cb936f41bd21be38188189a825341f7f239
[INFO] sha for GitHub repo studoot/duplicate-finder: f1871cb936f41bd21be38188189a825341f7f239
[INFO] validating manifest of studoot/duplicate-finder on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of studoot/duplicate-finder on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing studoot/duplicate-finder
[INFO] finished frobbing studoot/duplicate-finder
[INFO] frobbed toml for studoot/duplicate-finder written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/studoot/duplicate-finder/Cargo.toml
[INFO] started frobbing studoot/duplicate-finder
[INFO] finished frobbing studoot/duplicate-finder
[INFO] frobbed toml for studoot/duplicate-finder written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/studoot/duplicate-finder/Cargo.toml
[INFO] crate studoot/duplicate-finder has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing studoot/duplicate-finder against master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-1/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/studoot/duplicate-finder:/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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "build" "--frozen"`
[INFO] [stdout] 9c1af485604eb027e0b30f7e78ce22b6e16680742c9d8efb3b79ccee08864fbd
[INFO] running `"docker" "start" "-a" "9c1af485604eb027e0b30f7e78ce22b6e16680742c9d8efb3b79ccee08864fbd"`
[INFO] [stderr]    Compiling either v1.2.0
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling term_size v0.3.0
[INFO] [stderr]    Compiling num_cpus v1.6.2
[INFO] [stderr]    Compiling atty v0.2.2
[INFO] [stderr]    Compiling multimap v0.4.0
[INFO] [stderr]    Compiling structopt-derive v0.1.1
[INFO] [stderr]    Compiling textwrap v0.8.0
[INFO] [stderr]    Compiling coco v0.1.1
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling clap v2.26.2
[INFO] [stderr]    Compiling rayon-core v1.2.1
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stderr]    Compiling rayon v0.8.2
[INFO] [stderr]    Compiling globset v0.2.0
[INFO] [stderr]    Compiling ignore v0.2.2
[INFO] [stderr]    Compiling structopt v0.1.1
[INFO] [stderr]    Compiling duplicate-finder v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `outputter`
[INFO] [stderr]   --> src/main.rs:92:13
[INFO] [stderr]    |
[INFO] [stderr] 92 |         let outputter = get_outputter(opts.output_type);
[INFO] [stderr]    |             ^^^^^^^^^ help: consider prefixing with an underscore: `_outputter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stream`
[INFO] [stderr]  --> src/output/csv.rs:9:22
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn output(&self, stream: &mut Write, d : &Duplicates) -> () {
[INFO] [stderr]   |                      ^^^^^^ help: consider prefixing with an underscore: `_stream`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d`
[INFO] [stderr]  --> src/output/csv.rs:9:42
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn output(&self, stream: &mut Write, d : &Duplicates) -> () {
[INFO] [stderr]   |                                          ^ help: consider prefixing with an underscore: `_d`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stream`
[INFO] [stderr]  --> src/output/json.rs:9:22
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn output(&self, stream: &mut Write, d : &Duplicates) -> () {
[INFO] [stderr]   |                      ^^^^^^ help: consider prefixing with an underscore: `_stream`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d`
[INFO] [stderr]  --> src/output/json.rs:9:42
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn output(&self, stream: &mut Write, d : &Duplicates) -> () {
[INFO] [stderr]   |                                          ^ help: consider prefixing with an underscore: `_d`
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `attr_literals` has been stable since 1.30.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(attr_literals, rustc_private)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(stable_features)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 48.14s
[INFO] running `"docker" "inspect" "9c1af485604eb027e0b30f7e78ce22b6e16680742c9d8efb3b79ccee08864fbd"`
[INFO] running `"docker" "rm" "-f" "9c1af485604eb027e0b30f7e78ce22b6e16680742c9d8efb3b79ccee08864fbd"`
[INFO] [stdout] 9c1af485604eb027e0b30f7e78ce22b6e16680742c9d8efb3b79ccee08864fbd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-1/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/studoot/duplicate-finder:/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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 414b251b252578b854704f23d7ddbdb78a2292924d55ea4aae9d8686f4f1f18b
[INFO] running `"docker" "start" "-a" "414b251b252578b854704f23d7ddbdb78a2292924d55ea4aae9d8686f4f1f18b"`
[INFO] [stderr]    Compiling duplicate-finder v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `outputter`
[INFO] [stderr]   --> src/main.rs:92:13
[INFO] [stderr]    |
[INFO] [stderr] 92 |         let outputter = get_outputter(opts.output_type);
[INFO] [stderr]    |             ^^^^^^^^^ help: consider prefixing with an underscore: `_outputter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stream`
[INFO] [stderr]  --> src/output/csv.rs:9:22
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn output(&self, stream: &mut Write, d : &Duplicates) -> () {
[INFO] [stderr]   |                      ^^^^^^ help: consider prefixing with an underscore: `_stream`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d`
[INFO] [stderr]  --> src/output/csv.rs:9:42
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn output(&self, stream: &mut Write, d : &Duplicates) -> () {
[INFO] [stderr]   |                                          ^ help: consider prefixing with an underscore: `_d`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stream`
[INFO] [stderr]  --> src/output/json.rs:9:22
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn output(&self, stream: &mut Write, d : &Duplicates) -> () {
[INFO] [stderr]   |                      ^^^^^^ help: consider prefixing with an underscore: `_stream`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d`
[INFO] [stderr]  --> src/output/json.rs:9:42
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn output(&self, stream: &mut Write, d : &Duplicates) -> () {
[INFO] [stderr]   |                                          ^ help: consider prefixing with an underscore: `_d`
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `attr_literals` has been stable since 1.30.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(attr_literals, rustc_private)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(stable_features)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `"docker" "inspect" "414b251b252578b854704f23d7ddbdb78a2292924d55ea4aae9d8686f4f1f18b"`
[INFO] running `"docker" "rm" "-f" "414b251b252578b854704f23d7ddbdb78a2292924d55ea4aae9d8686f4f1f18b"`
[INFO] [stdout] 414b251b252578b854704f23d7ddbdb78a2292924d55ea4aae9d8686f4f1f18b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-1/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/studoot/duplicate-finder:/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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen"`
[INFO] [stdout] 7c7340b627e4e3b53df0665c94f211d73633f70884330cd6caebfa09272aadbc
[INFO] running `"docker" "start" "-a" "7c7340b627e4e3b53df0665c94f211d73633f70884330cd6caebfa09272aadbc"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/duplicate_finder-d78e5ec81f775854
[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" "7c7340b627e4e3b53df0665c94f211d73633f70884330cd6caebfa09272aadbc"`
[INFO] running `"docker" "rm" "-f" "7c7340b627e4e3b53df0665c94f211d73633f70884330cd6caebfa09272aadbc"`
[INFO] [stdout] 7c7340b627e4e3b53df0665c94f211d73633f70884330cd6caebfa09272aadbc