[INFO] cloning repository https://github.com/emk/word-puzzler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/emk/word-puzzler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femk%2Fword-puzzler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femk%2Fword-puzzler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9a16dd018af950154836c2fb16fd3ba427ca9482
[INFO] testing emk/word-puzzler against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femk%2Fword-puzzler" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/emk/word-puzzler on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/emk/word-puzzler
[INFO] finished tweaking git repo https://github.com/emk/word-puzzler
[INFO] tweaked toml for git repo https://github.com/emk/word-puzzler written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/emk/word-puzzler already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fst v0.4.5
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 99dc579010a1263c28f345c04ee9149b7052b54b46377e199665b7a1d100a155
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "99dc579010a1263c28f345c04ee9149b7052b54b46377e199665b7a1d100a155", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "99dc579010a1263c28f345c04ee9149b7052b54b46377e199665b7a1d100a155", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99dc579010a1263c28f345c04ee9149b7052b54b46377e199665b7a1d100a155", kill_on_drop: false }`
[INFO] [stdout] 99dc579010a1263c28f345c04ee9149b7052b54b46377e199665b7a1d100a155
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee9dfd68a09fe584df074e19035aec2a40eab58316f91eeea12ba3fac6099fdc
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ee9dfd68a09fe584df074e19035aec2a40eab58316f91eeea12ba3fac6099fdc", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling regex-syntax v0.6.22
[INFO] [stderr]    Compiling fst v0.4.5
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling log v0.4.13
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling anyhow v1.0.38
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling thread_local v1.1.0
[INFO] [stderr]    Compiling itertools v0.10.0
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling memmap2 v0.2.0
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling ordered-float v2.0.1
[INFO] [stderr]    Compiling regex v1.4.3
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling env_logger v0.8.2
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling structopt v0.3.21
[INFO] [stderr]    Compiling letter-permutations v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 05s
[INFO] running `Command { std: "docker" "inspect" "ee9dfd68a09fe584df074e19035aec2a40eab58316f91eeea12ba3fac6099fdc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee9dfd68a09fe584df074e19035aec2a40eab58316f91eeea12ba3fac6099fdc", kill_on_drop: false }`
[INFO] [stdout] ee9dfd68a09fe584df074e19035aec2a40eab58316f91eeea12ba3fac6099fdc
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ba255a853262577ee194fd23b3669c0d087668de0b64c48c54cc3163b3279383
[INFO] running `Command { std: "docker" "start" "-a" "ba255a853262577ee194fd23b3669c0d087668de0b64c48c54cc3163b3279383", kill_on_drop: false }`
[INFO] [stderr]    Compiling letter-permutations v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.92s
[INFO] running `Command { std: "docker" "inspect" "ba255a853262577ee194fd23b3669c0d087668de0b64c48c54cc3163b3279383", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba255a853262577ee194fd23b3669c0d087668de0b64c48c54cc3163b3279383", kill_on_drop: false }`
[INFO] [stdout] ba255a853262577ee194fd23b3669c0d087668de0b64c48c54cc3163b3279383
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ada35e8af71948a3ec36ed3b71a4633c5a93aaae91560e6fe776566e58d515ba
[INFO] running `Command { std: "docker" "start" "-a" "ada35e8af71948a3ec36ed3b71a4633c5a93aaae91560e6fe776566e58d515ba", kill_on_drop: false }`
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/letter_permutations-50bc48b9dfd7c3e5)
[INFO] running `Command { std: "docker" "inspect" "ada35e8af71948a3ec36ed3b71a4633c5a93aaae91560e6fe776566e58d515ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ada35e8af71948a3ec36ed3b71a4633c5a93aaae91560e6fe776566e58d515ba", kill_on_drop: false }`
[INFO] [stdout] ada35e8af71948a3ec36ed3b71a4633c5a93aaae91560e6fe776566e58d515ba