[INFO] cloning repository PhilipDaniels/word_chains [INFO] running `"git" "clone" "--bare" "git://github.com/PhilipDaniels/word_chains.git" "work/cache/sources/gh/PhilipDaniels/word_chains"` [INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/PhilipDaniels/word_chains'... [INFO] running `"git" "clone" "work/cache/sources/gh/PhilipDaniels/word_chains" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/PhilipDaniels/word_chains"` [INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/PhilipDaniels/word_chains'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/PhilipDaniels/word_chains" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/PhilipDaniels/word_chains"` [INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/PhilipDaniels/word_chains'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] bf9430e6e6619f1988c7fe4bd4d6af853559eb35 [INFO] sha for GitHub repo PhilipDaniels/word_chains: bf9430e6e6619f1988c7fe4bd4d6af853559eb35 [INFO] validating manifest of PhilipDaniels/word_chains on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of PhilipDaniels/word_chains on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing PhilipDaniels/word_chains [INFO] finished frobbing PhilipDaniels/word_chains [INFO] frobbed toml for PhilipDaniels/word_chains written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/PhilipDaniels/word_chains/Cargo.toml [INFO] started frobbing PhilipDaniels/word_chains [INFO] finished frobbing PhilipDaniels/word_chains [INFO] frobbed toml for PhilipDaniels/word_chains written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/PhilipDaniels/word_chains/Cargo.toml [INFO] crate PhilipDaniels/word_chains already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing PhilipDaniels/word_chains against master#c8865d8e195813ade6b84434ac9f8850e7112d1a for pr-61629 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-1/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/PhilipDaniels/word_chains:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "build" "--frozen"` [INFO] [stdout] 0981ca96ecef44a38ebe582fa33c18882f430172a601888aae8d39ce9d7d5a07 [INFO] running `"docker" "start" "-a" "0981ca96ecef44a38ebe582fa33c18882f430172a601888aae8d39ce9d7d5a07"` [INFO] [stderr] Compiling syn v0.12.14 [INFO] [stderr] Compiling structopt-derive v0.2.5 [INFO] [stderr] Compiling structopt v0.2.5 [INFO] [stderr] Compiling word_chains v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused `#[macro_use]` import [INFO] [stderr] --> src/main.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #[macro_use] extern crate structopt; [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `g` [INFO] [stderr] --> src/letter_differences.rs:36:13 [INFO] [stderr] | [INFO] [stderr] 36 | let g = make_graph(&rwords_for_table); [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_g` [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/dictionary.rs:23:13 [INFO] [stderr] | [INFO] [stderr] 23 | let mut rdr = io::BufReader::new(file); [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: field is never used: `word` [INFO] [stderr] --> src/graph.rs:4:5 [INFO] [stderr] | [INFO] [stderr] 4 | word: &'word String, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `word` [INFO] [stderr] --> src/graph.rs:18:5 [INFO] [stderr] | [INFO] [stderr] 18 | fn word(&self) -> &String { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 15.20s [INFO] running `"docker" "inspect" "0981ca96ecef44a38ebe582fa33c18882f430172a601888aae8d39ce9d7d5a07"` [INFO] running `"docker" "rm" "-f" "0981ca96ecef44a38ebe582fa33c18882f430172a601888aae8d39ce9d7d5a07"` [INFO] [stdout] 0981ca96ecef44a38ebe582fa33c18882f430172a601888aae8d39ce9d7d5a07 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-1/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/PhilipDaniels/word_chains:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen" "--no-run"` [INFO] [stdout] 063256a3488c8cabec294d3ea69fcebac936d06e0b86fb5cae8bd471158d9690 [INFO] running `"docker" "start" "-a" "063256a3488c8cabec294d3ea69fcebac936d06e0b86fb5cae8bd471158d9690"` [INFO] [stderr] Compiling word_chains v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused `#[macro_use]` import [INFO] [stderr] --> src/main.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #[macro_use] extern crate structopt; [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `g` [INFO] [stderr] --> src/letter_differences.rs:36:13 [INFO] [stderr] | [INFO] [stderr] 36 | let g = make_graph(&rwords_for_table); [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_g` [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/dictionary.rs:23:13 [INFO] [stderr] | [INFO] [stderr] 23 | let mut rdr = io::BufReader::new(file); [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: field is never used: `word` [INFO] [stderr] --> src/graph.rs:4:5 [INFO] [stderr] | [INFO] [stderr] 4 | word: &'word String, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `word` [INFO] [stderr] --> src/graph.rs:18:5 [INFO] [stderr] | [INFO] [stderr] 18 | fn word(&self) -> &String { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.28s [INFO] running `"docker" "inspect" "063256a3488c8cabec294d3ea69fcebac936d06e0b86fb5cae8bd471158d9690"` [INFO] running `"docker" "rm" "-f" "063256a3488c8cabec294d3ea69fcebac936d06e0b86fb5cae8bd471158d9690"` [INFO] [stdout] 063256a3488c8cabec294d3ea69fcebac936d06e0b86fb5cae8bd471158d9690 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-1/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/PhilipDaniels/word_chains:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen"` [INFO] [stdout] e0153d2390cf5419c2d2abde85adf324f8c2a1f16aa11602c6939ea9b3be3f72 [INFO] running `"docker" "start" "-a" "e0153d2390cf5419c2d2abde85adf324f8c2a1f16aa11602c6939ea9b3be3f72"` [INFO] [stderr] Blocking waiting for file lock on package cache lock [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.87s [INFO] [stderr] Running /opt/crater/target/debug/deps/word_chains-0a4b013ae52880c2 [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" "e0153d2390cf5419c2d2abde85adf324f8c2a1f16aa11602c6939ea9b3be3f72"` [INFO] running `"docker" "rm" "-f" "e0153d2390cf5419c2d2abde85adf324f8c2a1f16aa11602c6939ea9b3be3f72"` [INFO] [stdout] e0153d2390cf5419c2d2abde85adf324f8c2a1f16aa11602c6939ea9b3be3f72