[INFO] fetching crate minigrep_study 0.1.0...
[INFO] checking minigrep_study-0.1.0 against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] extracting crate minigrep_study 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate minigrep_study 0.1.0 on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate minigrep_study 0.1.0
[INFO] finished tweaking crates.io crate minigrep_study 0.1.0
[INFO] tweaked toml for crates.io crate minigrep_study 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate minigrep_study 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8feb9d5594162527836720dbb43bc1a47a5ce8991f2a68fe903474496aefaf8c
[INFO] running `Command { std: "docker" "start" "-a" "8feb9d5594162527836720dbb43bc1a47a5ce8991f2a68fe903474496aefaf8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8feb9d5594162527836720dbb43bc1a47a5ce8991f2a68fe903474496aefaf8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8feb9d5594162527836720dbb43bc1a47a5ce8991f2a68fe903474496aefaf8c", kill_on_drop: false }`
[INFO] [stdout] 8feb9d5594162527836720dbb43bc1a47a5ce8991f2a68fe903474496aefaf8c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e75cd2d0f645a3629de28f1bc43125428d239de6f802a12a6833c84eedf92bc6
[INFO] running `Command { std: "docker" "start" "-a" "e75cd2d0f645a3629de28f1bc43125428d239de6f802a12a6833c84eedf92bc6", kill_on_drop: false }`
[INFO] [stderr]     Checking minigrep_study v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `core::fmt`
[INFO] [stdout]  --> src/example/study_iter.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::fmt;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::option`
[INFO] [stdout]  --> src/example/study_iter.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::option;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::fmt`
[INFO] [stdout]  --> src/example/study_iter.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::fmt;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::option`
[INFO] [stdout]  --> src/example/study_iter.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::option;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Shoe`, `generate_workout`, `shoe_in_my_size`
[INFO] [stdout]  --> src/main.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | use minigrep_study::{run, Config,generate_workout,shoe_in_my_size,Counter,Shoe};
[INFO] [stdout]   |                                  ^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Shoe`, `generate_workout`, `shoe_in_my_size`
[INFO] [stdout]  --> src/main.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | use minigrep_study::{run, Config,generate_workout,shoe_in_my_size,Counter,Shoe};
[INFO] [stdout]   |                                  ^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "e75cd2d0f645a3629de28f1bc43125428d239de6f802a12a6833c84eedf92bc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e75cd2d0f645a3629de28f1bc43125428d239de6f802a12a6833c84eedf92bc6", kill_on_drop: false }`
[INFO] [stdout] e75cd2d0f645a3629de28f1bc43125428d239de6f802a12a6833c84eedf92bc6