[INFO] cloning repository https://github.com/TehnoTheDragon/ars
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TehnoTheDragon/ars" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTehnoTheDragon%2Fars", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTehnoTheDragon%2Fars'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1fe4f68df96c5f049867be551b66cce88b038919
[INFO] checking TehnoTheDragon/ars against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTehnoTheDragon%2Fars" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TehnoTheDragon/ars 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/TehnoTheDragon/ars
[INFO] finished tweaking git repo https://github.com/TehnoTheDragon/ars
[INFO] tweaked toml for git repo https://github.com/TehnoTheDragon/ars written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/TehnoTheDragon/ars 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 51a6b2e16f5ae1c1c7a20db3bf1dfde579a84ee31681cab2e71e812b5a677cf1
[INFO] running `Command { std: "docker" "start" "-a" "51a6b2e16f5ae1c1c7a20db3bf1dfde579a84ee31681cab2e71e812b5a677cf1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "51a6b2e16f5ae1c1c7a20db3bf1dfde579a84ee31681cab2e71e812b5a677cf1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51a6b2e16f5ae1c1c7a20db3bf1dfde579a84ee31681cab2e71e812b5a677cf1", kill_on_drop: false }`
[INFO] [stdout] 51a6b2e16f5ae1c1c7a20db3bf1dfde579a84ee31681cab2e71e812b5a677cf1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 2bf945fb3a12c989accdab1942b667bd83087ef04e8aaa62c45a80e1464883a0
[INFO] running `Command { std: "docker" "start" "-a" "2bf945fb3a12c989accdab1942b667bd83087ef04e8aaa62c45a80e1464883a0", kill_on_drop: false }`
[INFO] [stderr]     Checking regex v1.10.5
[INFO] [stderr]     Checking ars v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `BorrowMut`, `Borrow`, `RwLockReadGuard`, `RwLock`, `cell::Cell`, and `ops::Deref`
[INFO] [stdout]  --> src/ast.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::{Borrow, BorrowMut}, cell::Cell, fmt::{Display, Write}, ops::Deref, sync::{Arc, RwLock, RwLockReadGuard}};
[INFO] [stdout]   |                    ^^^^^^  ^^^^^^^^^   ^^^^^^^^^^                         ^^^^^^^^^^              ^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Ref`, `borrow::BorrowMut`, `format`, and `ops::ShrAssign`
[INFO] [stdout]  --> src/visitor.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::BorrowMut, cell::{Ref, RefCell}, collections::HashMap, fmt::{format, Display}, ops::ShrAssign, rc::Rc, sync::{Arc, Mute...
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^         ^^^                                        ^^^^^^            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BorrowMut`, `Borrow`, `RwLockReadGuard`, `RwLock`, `cell::Cell`, and `ops::Deref`
[INFO] [stdout]  --> src/ast.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::{Borrow, BorrowMut}, cell::Cell, fmt::{Display, Write}, ops::Deref, sync::{Arc, RwLock, RwLockReadGuard}};
[INFO] [stdout]   |                    ^^^^^^  ^^^^^^^^^   ^^^^^^^^^^                         ^^^^^^^^^^              ^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Ref`, `borrow::BorrowMut`, `format`, and `ops::ShrAssign`
[INFO] [stdout]  --> src/visitor.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::BorrowMut, cell::{Ref, RefCell}, collections::HashMap, fmt::{format, Display}, ops::ShrAssign, rc::Rc, sync::{Arc, Mute...
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^         ^^^                                        ^^^^^^            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/ast.rs:1:67
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::{Borrow, BorrowMut}, cell::Cell, fmt::{Display, Write}, ops::Deref, sync::{Arc, RwLock, RwLockReadGuard}};
[INFO] [stdout]   |                                                                   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/ast.rs:1:67
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::{Borrow, BorrowMut}, cell::Cell, fmt::{Display, Write}, ops::Deref, sync::{Arc, RwLock, RwLockReadGuard}};
[INFO] [stdout]   |                                                                   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `Command { std: "docker" "inspect" "2bf945fb3a12c989accdab1942b667bd83087ef04e8aaa62c45a80e1464883a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bf945fb3a12c989accdab1942b667bd83087ef04e8aaa62c45a80e1464883a0", kill_on_drop: false }`
[INFO] [stdout] 2bf945fb3a12c989accdab1942b667bd83087ef04e8aaa62c45a80e1464883a0
[INFO] checking TehnoTheDragon/ars against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTehnoTheDragon%2Fars" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TehnoTheDragon/ars 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/TehnoTheDragon/ars
[INFO] finished tweaking git repo https://github.com/TehnoTheDragon/ars
[INFO] tweaked toml for git repo https://github.com/TehnoTheDragon/ars written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/TehnoTheDragon/ars 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 13fe766653ab8320349d28ecfb9edd3998396d3230d45eb2bf71a226f3e0c15a
[INFO] running `Command { std: "docker" "start" "-a" "13fe766653ab8320349d28ecfb9edd3998396d3230d45eb2bf71a226f3e0c15a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "13fe766653ab8320349d28ecfb9edd3998396d3230d45eb2bf71a226f3e0c15a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13fe766653ab8320349d28ecfb9edd3998396d3230d45eb2bf71a226f3e0c15a", kill_on_drop: false }`
[INFO] [stdout] 13fe766653ab8320349d28ecfb9edd3998396d3230d45eb2bf71a226f3e0c15a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] ca53cff39d323598bcb16eb24682160877bea476050ea4189f16ce5b88193171
[INFO] running `Command { std: "docker" "start" "-a" "ca53cff39d323598bcb16eb24682160877bea476050ea4189f16ce5b88193171", kill_on_drop: false }`
[INFO] [stderr]     Checking regex v1.10.5
[INFO] [stderr]     Checking ars v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `BorrowMut`, `Borrow`, `RwLockReadGuard`, `RwLock`, `cell::Cell`, and `ops::Deref`
[INFO] [stdout]  --> src/ast.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::{Borrow, BorrowMut}, cell::Cell, fmt::{Display, Write}, ops::Deref, sync::{Arc, RwLock, RwLockReadGuard}};
[INFO] [stdout]   |                    ^^^^^^  ^^^^^^^^^   ^^^^^^^^^^                         ^^^^^^^^^^              ^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Ref`, `borrow::BorrowMut`, `format`, and `ops::ShrAssign`
[INFO] [stdout]  --> src/visitor.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::BorrowMut, cell::{Ref, RefCell}, collections::HashMap, fmt::{format, Display}, ops::ShrAssign, rc::Rc, sync::{Arc, Mute...
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^         ^^^                                        ^^^^^^            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BorrowMut`, `Borrow`, `RwLockReadGuard`, `RwLock`, `cell::Cell`, and `ops::Deref`
[INFO] [stdout]  --> src/ast.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::{Borrow, BorrowMut}, cell::Cell, fmt::{Display, Write}, ops::Deref, sync::{Arc, RwLock, RwLockReadGuard}};
[INFO] [stdout]   |                    ^^^^^^  ^^^^^^^^^   ^^^^^^^^^^                         ^^^^^^^^^^              ^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Ref`, `borrow::BorrowMut`, `format`, and `ops::ShrAssign`
[INFO] [stdout]  --> src/visitor.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::BorrowMut, cell::{Ref, RefCell}, collections::HashMap, fmt::{format, Display}, ops::ShrAssign, rc::Rc, sync::{Arc, Mute...
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^         ^^^                                        ^^^^^^            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/ast.rs:1:67
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::{Borrow, BorrowMut}, cell::Cell, fmt::{Display, Write}, ops::Deref, sync::{Arc, RwLock, RwLockReadGuard}};
[INFO] [stdout]   |                                                                   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/ast.rs:1:67
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::{Borrow, BorrowMut}, cell::Cell, fmt::{Display, Write}, ops::Deref, sync::{Arc, RwLock, RwLockReadGuard}};
[INFO] [stdout]   |                                                                   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `Command { std: "docker" "inspect" "ca53cff39d323598bcb16eb24682160877bea476050ea4189f16ce5b88193171", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca53cff39d323598bcb16eb24682160877bea476050ea4189f16ce5b88193171", kill_on_drop: false }`
[INFO] [stdout] ca53cff39d323598bcb16eb24682160877bea476050ea4189f16ce5b88193171