[INFO] cloning repository https://github.com/sivasankar459/rust_check
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sivasankar459/rust_check" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsivasankar459%2Frust_check", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsivasankar459%2Frust_check'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 40c7099b697adcb778353e60b0db72cd55da8e4a
[INFO] checking sivasankar459/rust_check against try#028201683a76a5cd349729c6819c46607119c4e8 for pr-144157
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsivasankar459%2Frust_check" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sivasankar459/rust_check
[INFO] finished tweaking git repo https://github.com/sivasankar459/rust_check
[INFO] tweaked toml for git repo https://github.com/sivasankar459/rust_check written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sivasankar459/rust_check on toolchain 028201683a76a5cd349729c6819c46607119c4e8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+028201683a76a5cd349729c6819c46607119c4e8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sivasankar459/rust_check 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" "+028201683a76a5cd349729c6819c46607119c4e8" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+028201683a76a5cd349729c6819c46607119c4e8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cff5bf17d6b8d77e3ab5f7402146956f0d86b596eb08cb46179bcc3fbfe9c7de
[INFO] running `Command { std: "docker" "start" "-a" "cff5bf17d6b8d77e3ab5f7402146956f0d86b596eb08cb46179bcc3fbfe9c7de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cff5bf17d6b8d77e3ab5f7402146956f0d86b596eb08cb46179bcc3fbfe9c7de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cff5bf17d6b8d77e3ab5f7402146956f0d86b596eb08cb46179bcc3fbfe9c7de", kill_on_drop: false }`
[INFO] [stdout] cff5bf17d6b8d77e3ab5f7402146956f0d86b596eb08cb46179bcc3fbfe9c7de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+028201683a76a5cd349729c6819c46607119c4e8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 237a7a943d5f9b107cd063f56b6c8b6afec18370496bf759f07d2b7b0a5e9f83
[INFO] running `Command { std: "docker" "start" "-a" "237a7a943d5f9b107cd063f56b6c8b6afec18370496bf759f07d2b7b0a5e9f83", kill_on_drop: false }`
[INFO] [stderr]     Checking text_editor v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/lib.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{self, BufRead, BufReader, Read, Write, Result};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/lib.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{self, BufRead, BufReader, Read, Write, Result};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `TextEditor`
[INFO] [stdout]  --> tests/test.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use TextEditor::TextEditor;
[INFO] [stdout]   |     ^^^^^^^^^^ use of undeclared type `TextEditor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::result`
[INFO] [stdout]  --> tests/test.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::result;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `text_editor` (test "test") due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "237a7a943d5f9b107cd063f56b6c8b6afec18370496bf759f07d2b7b0a5e9f83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "237a7a943d5f9b107cd063f56b6c8b6afec18370496bf759f07d2b7b0a5e9f83", kill_on_drop: false }`
[INFO] [stdout] 237a7a943d5f9b107cd063f56b6c8b6afec18370496bf759f07d2b7b0a5e9f83