[INFO] cloning repository https://github.com/chyuhoin/mylex
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chyuhoin/mylex" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchyuhoin%2Fmylex", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchyuhoin%2Fmylex'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 789e9e5d88128290be3a8ec462bfd514bd2023c3
[INFO] checking chyuhoin/mylex against try#04ea1e1f1a12cfa912c228ca278237d92d0bb6df for pr-148477-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchyuhoin%2Fmylex" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/chyuhoin/mylex
[INFO] finished tweaking git repo https://github.com/chyuhoin/mylex
[INFO] tweaked toml for git repo https://github.com/chyuhoin/mylex written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/chyuhoin/mylex on toolchain 04ea1e1f1a12cfa912c228ca278237d92d0bb6df
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+04ea1e1f1a12cfa912c228ca278237d92d0bb6df" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/chyuhoin/mylex 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" "+04ea1e1f1a12cfa912c228ca278237d92d0bb6df" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+04ea1e1f1a12cfa912c228ca278237d92d0bb6df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6522980df107735ad9a04d55f2d66edc7dc996a21b5f9989a88f351ccb3eadd9
[INFO] running `Command { std: "docker" "start" "-a" "6522980df107735ad9a04d55f2d66edc7dc996a21b5f9989a88f351ccb3eadd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6522980df107735ad9a04d55f2d66edc7dc996a21b5f9989a88f351ccb3eadd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6522980df107735ad9a04d55f2d66edc7dc996a21b5f9989a88f351ccb3eadd9", kill_on_drop: false }`
[INFO] [stdout] 6522980df107735ad9a04d55f2d66edc7dc996a21b5f9989a88f351ccb3eadd9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+04ea1e1f1a12cfa912c228ca278237d92d0bb6df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9ad0c93c0c3de6c18ee98765e1bc0358a1774bfe467ff170c23bed4274b1e39e
[INFO] running `Command { std: "docker" "start" "-a" "9ad0c93c0c3de6c18ee98765e1bc0358a1774bfe467ff170c23bed4274b1e39e", kill_on_drop: false }`
[INFO] [stderr]     Checking mylex v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `print_standard_dfa`
[INFO] [stdout]   --> src/main.rs:13:35
[INFO] [stdout]    |
[INFO] [stdout] 13 | use crate::combine_dfa::{combine, print_standard_dfa};
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `print_dfa`
[INFO] [stdout]   --> src/main.rs:19:30
[INFO] [stdout]    |
[INFO] [stdout] 19 | use crate::to_dfa::{convert, print_dfa};
[INFO] [stdout]    |                              ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `print_standard_dfa`
[INFO] [stdout]   --> src/main.rs:13:35
[INFO] [stdout]    |
[INFO] [stdout] 13 | use crate::combine_dfa::{combine, print_standard_dfa};
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `print_dfa`
[INFO] [stdout]   --> src/main.rs:19:30
[INFO] [stdout]    |
[INFO] [stdout] 19 | use crate::to_dfa::{convert, print_dfa};
[INFO] [stdout]    |                              ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_nfa` is never used
[INFO] [stdout]    --> src/to_dfa.rs:188:4
[INFO] [stdout]     |
[INFO] [stdout] 188 | fn print_nfa(nfa :&Graph<i32, char>) {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_dfa` is never used
[INFO] [stdout]    --> src/to_dfa.rs:372:8
[INFO] [stdout]     |
[INFO] [stdout] 372 | pub fn print_dfa(dfa :&Graph<i32, char>) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_standard_dfa` is never used
[INFO] [stdout]   --> src/combine_dfa.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn print_standard_dfa(dfa :&Dfa<Vertex, char>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/input.rs:116:30
[INFO] [stdout]     |
[INFO] [stdout] 116 |         let mut new_reg = reg.clone().to_string();
[INFO] [stdout]     |                              ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_nfa` is never used
[INFO] [stdout]    --> src/to_dfa.rs:188:4
[INFO] [stdout]     |
[INFO] [stdout] 188 | fn print_nfa(nfa :&Graph<i32, char>) {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_dfa` is never used
[INFO] [stdout]    --> src/to_dfa.rs:372:8
[INFO] [stdout]     |
[INFO] [stdout] 372 | pub fn print_dfa(dfa :&Graph<i32, char>) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_standard_dfa` is never used
[INFO] [stdout]   --> src/combine_dfa.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn print_standard_dfa(dfa :&Dfa<Vertex, char>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/input.rs:116:30
[INFO] [stdout]     |
[INFO] [stdout] 116 |         let mut new_reg = reg.clone().to_string();
[INFO] [stdout]     |                              ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "9ad0c93c0c3de6c18ee98765e1bc0358a1774bfe467ff170c23bed4274b1e39e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ad0c93c0c3de6c18ee98765e1bc0358a1774bfe467ff170c23bed4274b1e39e", kill_on_drop: false }`
[INFO] [stdout] 9ad0c93c0c3de6c18ee98765e1bc0358a1774bfe467ff170c23bed4274b1e39e