[INFO] cloning repository https://github.com/JorgeQuinteros02/compiler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JorgeQuinteros02/compiler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJorgeQuinteros02%2Fcompiler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJorgeQuinteros02%2Fcompiler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a5578bee56c054b8bd3b626c7ff46f13f5bc2cd9
[INFO] building JorgeQuinteros02/compiler against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJorgeQuinteros02%2Fcompiler" "/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/JorgeQuinteros02/compiler on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JorgeQuinteros02/compiler
[INFO] finished tweaking git repo https://github.com/JorgeQuinteros02/compiler
[INFO] tweaked toml for git repo https://github.com/JorgeQuinteros02/compiler written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/JorgeQuinteros02/compiler 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b627f72d38c2507138f457c44374399e01bc6de6c84fa8bb308433b58d1f32db
[INFO] running `Command { std: "docker" "start" "-a" "b627f72d38c2507138f457c44374399e01bc6de6c84fa8bb308433b58d1f32db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b627f72d38c2507138f457c44374399e01bc6de6c84fa8bb308433b58d1f32db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b627f72d38c2507138f457c44374399e01bc6de6c84fa8bb308433b58d1f32db", kill_on_drop: false }`
[INFO] [stdout] b627f72d38c2507138f457c44374399e01bc6de6c84fa8bb308433b58d1f32db
[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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e754908c4685b2f7e57fd2aa80ca3fb6b9d525506bb3d491b97c19fb9f63d7b8
[INFO] running `Command { std: "docker" "start" "-a" "e754908c4685b2f7e57fd2aa80ca3fb6b9d525506bb3d491b97c19fb9f63d7b8", kill_on_drop: false }`
[INFO] [stderr]    Compiling either v1.10.0
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]    Compiling compiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `rc::Rc`
[INFO] [stdout]  --> src/lib.rs:1:57
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::{HashMap, VecDeque}, fmt::Error, rc::Rc};
[INFO] [stdout]   |                                                         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `hash::Hash`, `path::Display`, and `thread::current`
[INFO] [stdout]  --> src/dfa.rs:1:45
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::{HashMap, VecDeque}, hash::Hash, path::Display, thread::current};
[INFO] [stdout]   |                                             ^^^^^^^^^^  ^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `GroupingMapBy` and `enumerate`
[INFO] [stdout]  --> src/dfa.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use itertools::{enumerate, GroupingMapBy, Itertools};
[INFO] [stdout]   |                 ^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `class`
[INFO] [stdout]   --> src/lib.rs:57:68
[INFO] [stdout]    |
[INFO] [stdout] 57 |     let machines: Vec<Nfa> = regexes.iter().enumerate().map(|(i, &(class,regex,alphabet))| {
[INFO] [stdout]    |                                                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_class`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `clone`
[INFO] [stdout]  --> src/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{clone, collections::VecDeque, env::args, fs::File, io::Read};
[INFO] [stdout]   |           ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/main.rs:42:40
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let mut file = match File::open(arg.clone()) {
[INFO] [stdout]    |                                        ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.83s
[INFO] running `Command { std: "docker" "inspect" "e754908c4685b2f7e57fd2aa80ca3fb6b9d525506bb3d491b97c19fb9f63d7b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e754908c4685b2f7e57fd2aa80ca3fb6b9d525506bb3d491b97c19fb9f63d7b8", kill_on_drop: false }`
[INFO] [stdout] e754908c4685b2f7e57fd2aa80ca3fb6b9d525506bb3d491b97c19fb9f63d7b8
[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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 686c9d9fcbf5081a3ccc5a251c37368ea534ca7c91bfd9d22e34284e2861dc2a
[INFO] running `Command { std: "docker" "start" "-a" "686c9d9fcbf5081a3ccc5a251c37368ea534ca7c91bfd9d22e34284e2861dc2a", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `rc::Rc`
[INFO] [stdout]  --> src/lib.rs:1:57
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::{HashMap, VecDeque}, fmt::Error, rc::Rc};
[INFO] [stdout]   |                                                         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling compiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `hash::Hash`, `path::Display`, and `thread::current`
[INFO] [stdout]  --> src/dfa.rs:1:45
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::{HashMap, VecDeque}, hash::Hash, path::Display, thread::current};
[INFO] [stdout]   |                                             ^^^^^^^^^^  ^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `GroupingMapBy` and `enumerate`
[INFO] [stdout]  --> src/dfa.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use itertools::{enumerate, GroupingMapBy, Itertools};
[INFO] [stdout]   |                 ^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `class`
[INFO] [stdout]   --> src/lib.rs:57:68
[INFO] [stdout]    |
[INFO] [stdout] 57 |     let machines: Vec<Nfa> = regexes.iter().enumerate().map(|(i, &(class,regex,alphabet))| {
[INFO] [stdout]    |                                                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_class`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `clone`
[INFO] [stdout]  --> src/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{clone, collections::VecDeque, env::args, fs::File, io::Read};
[INFO] [stdout]   |           ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rc::Rc`
[INFO] [stdout]  --> src/lib.rs:1:57
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::{HashMap, VecDeque}, fmt::Error, rc::Rc};
[INFO] [stdout]   |                                                         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `hash::Hash`, `path::Display`, and `thread::current`
[INFO] [stdout]  --> src/dfa.rs:1:45
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::{HashMap, VecDeque}, hash::Hash, path::Display, thread::current};
[INFO] [stdout]   |                                             ^^^^^^^^^^  ^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `GroupingMapBy` and `enumerate`
[INFO] [stdout]  --> src/dfa.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use itertools::{enumerate, GroupingMapBy, Itertools};
[INFO] [stdout]   |                 ^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/main.rs:42:40
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let mut file = match File::open(arg.clone()) {
[INFO] [stdout]    |                                        ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `class`
[INFO] [stdout]   --> src/lib.rs:57:68
[INFO] [stdout]    |
[INFO] [stdout] 57 |     let machines: Vec<Nfa> = regexes.iter().enumerate().map(|(i, &(class,regex,alphabet))| {
[INFO] [stdout]    |                                                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_class`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "686c9d9fcbf5081a3ccc5a251c37368ea534ca7c91bfd9d22e34284e2861dc2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "686c9d9fcbf5081a3ccc5a251c37368ea534ca7c91bfd9d22e34284e2861dc2a", kill_on_drop: false }`
[INFO] [stdout] 686c9d9fcbf5081a3ccc5a251c37368ea534ca7c91bfd9d22e34284e2861dc2a