[INFO] cloning repository https://github.com/tnecio/five_letter_words
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tnecio/five_letter_words" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftnecio%2Ffive_letter_words", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftnecio%2Ffive_letter_words'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cbd28f68e4b69704ebae26325383a17f9a940361
[INFO] checking tnecio/five_letter_words against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftnecio%2Ffive_letter_words" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tnecio/five_letter_words on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tnecio/five_letter_words
[INFO] finished tweaking git repo https://github.com/tnecio/five_letter_words
[INFO] tweaked toml for git repo https://github.com/tnecio/five_letter_words written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/tnecio/five_letter_words already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: target.x86_64-unknown-linux-gnu.linker
[INFO] [stderr] warning: unused manifest key: target.x86_64-unknown-linux-gnu.rustflags
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded prettytable-rs v0.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dc36b2b59ad710b5fff751339cd9d1d6348be7da6232fed325dce3439eb075b7
[INFO] running `Command { std: "docker" "start" "-a" "dc36b2b59ad710b5fff751339cd9d1d6348be7da6232fed325dce3439eb075b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc36b2b59ad710b5fff751339cd9d1d6348be7da6232fed325dce3439eb075b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc36b2b59ad710b5fff751339cd9d1d6348be7da6232fed325dce3439eb075b7", kill_on_drop: false }`
[INFO] [stdout] dc36b2b59ad710b5fff751339cd9d1d6348be7da6232fed325dce3439eb075b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 855c2410bb27430f5d211f1010ab004cbd6f682f3215f92fba5f84f354055a9f
[INFO] running `Command { std: "docker" "start" "-a" "855c2410bb27430f5d211f1010ab004cbd6f682f3215f92fba5f84f354055a9f", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: target.x86_64-unknown-linux-gnu.linker
[INFO] [stderr] warning: unused manifest key: target.x86_64-unknown-linux-gnu.rustflags
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling crossbeam-utils v0.8.12
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.11
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking encode_unicode v1.0.0
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking term v0.7.0
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking prettytable-rs v0.9.0
[INFO] [stderr]     Checking five_letter_words v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated items `from_bool_columns` and `print` are never used
[INFO] [stdout]    --> src/dancing_links_soa.rs:147:8
[INFO] [stdout]     |
[INFO] [stdout] 31  | impl DLMatrix {
[INFO] [stdout]     | ------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 147 |     fn from_bool_columns(columns: &Vec<Vec<bool>>) -> Self {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 412 |     fn print(&self) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `transpose` is never used
[INFO] [stdout]    --> src/dancing_links_soa.rs:617:4
[INFO] [stdout]     |
[INFO] [stdout] 617 | fn transpose<T>(v: Vec<Vec<T>>) -> Vec<Vec<T>> {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `transpose` is never used
[INFO] [stdout]    --> src/dancing_links_soa.rs:617:4
[INFO] [stdout]     |
[INFO] [stdout] 617 | fn transpose<T>(v: Vec<Vec<T>>) -> Vec<Vec<T>> {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.89s
[INFO] running `Command { std: "docker" "inspect" "855c2410bb27430f5d211f1010ab004cbd6f682f3215f92fba5f84f354055a9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "855c2410bb27430f5d211f1010ab004cbd6f682f3215f92fba5f84f354055a9f", kill_on_drop: false }`
[INFO] [stdout] 855c2410bb27430f5d211f1010ab004cbd6f682f3215f92fba5f84f354055a9f
[INFO] checking tnecio/five_letter_words against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftnecio%2Ffive_letter_words" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tnecio/five_letter_words on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tnecio/five_letter_words
[INFO] finished tweaking git repo https://github.com/tnecio/five_letter_words
[INFO] tweaked toml for git repo https://github.com/tnecio/five_letter_words written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/tnecio/five_letter_words already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: target.x86_64-unknown-linux-gnu.linker
[INFO] [stderr] warning: unused manifest key: target.x86_64-unknown-linux-gnu.rustflags
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ee07f1c47e1d958ff209468280b23d8acbfb32837717323fb551ddea5240ebff
[INFO] running `Command { std: "docker" "start" "-a" "ee07f1c47e1d958ff209468280b23d8acbfb32837717323fb551ddea5240ebff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ee07f1c47e1d958ff209468280b23d8acbfb32837717323fb551ddea5240ebff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee07f1c47e1d958ff209468280b23d8acbfb32837717323fb551ddea5240ebff", kill_on_drop: false }`
[INFO] [stdout] ee07f1c47e1d958ff209468280b23d8acbfb32837717323fb551ddea5240ebff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eda39fc67e6c3bdcd4d87d5625c9463cc234ddd13205d6ff9e50778bf78857e2
[INFO] running `Command { std: "docker" "start" "-a" "eda39fc67e6c3bdcd4d87d5625c9463cc234ddd13205d6ff9e50778bf78857e2", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: target.x86_64-unknown-linux-gnu.linker
[INFO] [stderr] warning: unused manifest key: target.x86_64-unknown-linux-gnu.rustflags
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling crossbeam-utils v0.8.12
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.11
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking encode_unicode v1.0.0
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking term v0.7.0
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking prettytable-rs v0.9.0
[INFO] [stderr]     Checking five_letter_words v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated items `from_bool_columns` and `print` are never used
[INFO] [stdout]    --> src/dancing_links_soa.rs:147:8
[INFO] [stdout]     |
[INFO] [stdout] 31  | impl DLMatrix {
[INFO] [stdout]     | ------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 147 |     fn from_bool_columns(columns: &Vec<Vec<bool>>) -> Self {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 412 |     fn print(&self) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `transpose` is never used
[INFO] [stdout]    --> src/dancing_links_soa.rs:617:4
[INFO] [stdout]     |
[INFO] [stdout] 617 | fn transpose<T>(v: Vec<Vec<T>>) -> Vec<Vec<T>> {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `transpose` is never used
[INFO] [stdout]    --> src/dancing_links_soa.rs:617:4
[INFO] [stdout]     |
[INFO] [stdout] 617 | fn transpose<T>(v: Vec<Vec<T>>) -> Vec<Vec<T>> {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.28s
[INFO] running `Command { std: "docker" "inspect" "eda39fc67e6c3bdcd4d87d5625c9463cc234ddd13205d6ff9e50778bf78857e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eda39fc67e6c3bdcd4d87d5625c9463cc234ddd13205d6ff9e50778bf78857e2", kill_on_drop: false }`
[INFO] [stdout] eda39fc67e6c3bdcd4d87d5625c9463cc234ddd13205d6ff9e50778bf78857e2