[INFO] updating cached repository https://github.com/PhilipDaniels/word_chains [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] bf9430e6e6619f1988c7fe4bd4d6af853559eb35 [INFO] testing PhilipDaniels/word_chains against beta-2020-06-03 for beta-1.45-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPhilipDaniels%2Fword_chains" "/workspace/builds/worker-4/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/PhilipDaniels/word_chains on toolchain beta-2020-06-03 [INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/PhilipDaniels/word_chains [INFO] finished tweaking git repo https://github.com/PhilipDaniels/word_chains [INFO] tweaked toml for git repo https://github.com/PhilipDaniels/word_chains written to /workspace/builds/worker-4/source/Cargo.toml [INFO] crate git repo https://github.com/PhilipDaniels/word_chains already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] b5dc9031e80374fd1a15cc393f0e70f36319979bc3e6aab5e95314f9f623dee8 [INFO] running `"docker" "start" "-a" "b5dc9031e80374fd1a15cc393f0e70f36319979bc3e6aab5e95314f9f623dee8"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling atty v0.2.8 [INFO] [stderr] Compiling syn v0.12.14 [INFO] [stderr] Compiling clap v2.31.1 [INFO] [stderr] Compiling structopt-derive v0.2.5 [INFO] [stderr] Compiling structopt v0.2.5 [INFO] [stderr] Compiling word_chains v0.1.0 (/opt/rustwide/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: if this is intentional, prefix it 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 read: `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: associated function is never used: `word` [INFO] [stderr] --> src/graph.rs:18:8 [INFO] [stderr] | [INFO] [stderr] 18 | fn word(&self) -> &String { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: 5 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 18.89s [INFO] running `"docker" "inspect" "b5dc9031e80374fd1a15cc393f0e70f36319979bc3e6aab5e95314f9f623dee8"` [INFO] running `"docker" "rm" "-f" "b5dc9031e80374fd1a15cc393f0e70f36319979bc3e6aab5e95314f9f623dee8"` [INFO] [stdout] b5dc9031e80374fd1a15cc393f0e70f36319979bc3e6aab5e95314f9f623dee8 [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] cf2050f7fcb242a9114704a50e7173c3b6c349c931b35e7d6c911550330acb40 [INFO] running `"docker" "start" "-a" "cf2050f7fcb242a9114704a50e7173c3b6c349c931b35e7d6c911550330acb40"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling word_chains v0.1.0 (/opt/rustwide/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: if this is intentional, prefix it 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 read: `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: associated function is never used: `word` [INFO] [stderr] --> src/graph.rs:18:8 [INFO] [stderr] | [INFO] [stderr] 18 | fn word(&self) -> &String { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: 5 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.08s [INFO] running `"docker" "inspect" "cf2050f7fcb242a9114704a50e7173c3b6c349c931b35e7d6c911550330acb40"` [INFO] running `"docker" "rm" "-f" "cf2050f7fcb242a9114704a50e7173c3b6c349c931b35e7d6c911550330acb40"` [INFO] [stdout] cf2050f7fcb242a9114704a50e7173c3b6c349c931b35e7d6c911550330acb40 [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 06a83bd6e50e550de0537b1ff1063c72176e2c14a5878a185179b9e745414e6f [INFO] running `"docker" "start" "-a" "06a83bd6e50e550de0537b1ff1063c72176e2c14a5878a185179b9e745414e6f"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [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: if this is intentional, prefix it 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 read: `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: associated function is never used: `word` [INFO] [stderr] --> src/graph.rs:18:8 [INFO] [stderr] | [INFO] [stderr] 18 | fn word(&self) -> &String { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: 5 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.15s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/word_chains-abbb308b0584f20f [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" "06a83bd6e50e550de0537b1ff1063c72176e2c14a5878a185179b9e745414e6f"` [INFO] running `"docker" "rm" "-f" "06a83bd6e50e550de0537b1ff1063c72176e2c14a5878a185179b9e745414e6f"` [INFO] [stdout] 06a83bd6e50e550de0537b1ff1063c72176e2c14a5878a185179b9e745414e6f