[INFO] cloning repository https://github.com/windelbouwman/zowski
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/windelbouwman/zowski" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwindelbouwman%2Fzowski", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwindelbouwman%2Fzowski'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 35b528ec918449091ceda6c14e48546aabf93c9c
[INFO] checking windelbouwman/zowski against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwindelbouwman%2Fzowski" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/windelbouwman/zowski on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/windelbouwman/zowski
[INFO] finished tweaking git repo https://github.com/windelbouwman/zowski
[INFO] tweaked toml for git repo https://github.com/windelbouwman/zowski written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/windelbouwman/zowski already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b58fcd9fddcc3d84680dba7b0098a9beb70f2604867cbae56749877e42566577
[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" "b58fcd9fddcc3d84680dba7b0098a9beb70f2604867cbae56749877e42566577", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b58fcd9fddcc3d84680dba7b0098a9beb70f2604867cbae56749877e42566577", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b58fcd9fddcc3d84680dba7b0098a9beb70f2604867cbae56749877e42566577", kill_on_drop: false }`
[INFO] [stdout] b58fcd9fddcc3d84680dba7b0098a9beb70f2604867cbae56749877e42566577
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f58dd877f9f42cb0e70ebc35d8d885e1b890b908b2a86a6ab3934ab2da319e49
[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" "f58dd877f9f42cb0e70ebc35d8d885e1b890b908b2a86a6ab3934ab2da319e49", kill_on_drop: false }`
[INFO] [stderr]     Checking zowski v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `x`
[INFO] [stdout]  --> src/dfa.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     x: Vec<usize>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `write_dot`
[INFO] [stdout]  --> src/dot.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn write_dot(dfa: Dfa) -> std::io::Result<()> {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `symbol_range`
[INFO] [stdout]   --> src/expression.rs:84:12
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub fn symbol_range(begin: char, end: char) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `first_usages`
[INFO] [stdout]   --> src/main.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn first_usages() {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `first_prog`
[INFO] [stdout]   --> src/main.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn first_prog() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `simple_example`
[INFO] [stdout]   --> src/main.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn simple_example() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `x`
[INFO] [stdout]  --> src/dfa.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     x: Vec<usize>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `write_dot`
[INFO] [stdout]  --> src/dot.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn write_dot(dfa: Dfa) -> std::io::Result<()> {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `symbol_range`
[INFO] [stdout]   --> src/expression.rs:84:12
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub fn symbol_range(begin: char, end: char) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `first_usages`
[INFO] [stdout]   --> src/main.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn first_usages() {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `first_prog`
[INFO] [stdout]   --> src/main.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn first_prog() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `simple_example`
[INFO] [stdout]   --> src/main.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn simple_example() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `Command { std: "docker" "inspect" "f58dd877f9f42cb0e70ebc35d8d885e1b890b908b2a86a6ab3934ab2da319e49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f58dd877f9f42cb0e70ebc35d8d885e1b890b908b2a86a6ab3934ab2da319e49", kill_on_drop: false }`
[INFO] [stdout] f58dd877f9f42cb0e70ebc35d8d885e1b890b908b2a86a6ab3934ab2da319e49