[INFO] fetching crate shelldraw 0.1.0...
[INFO] testing shelldraw-0.1.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate shelldraw 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate shelldraw 0.1.0
[INFO] finished tweaking crates.io crate shelldraw 0.1.0
[INFO] tweaked toml for crates.io crate shelldraw 0.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate shelldraw 0.1.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate shelldraw 0.1.0 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syn v2.0.50
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a680d975b6c67f83999aedd57c38ae76f7f24cc981b591c8f850efabb4002a10
[INFO] running `Command { std: "docker" "start" "-a" "a680d975b6c67f83999aedd57c38ae76f7f24cc981b591c8f850efabb4002a10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a680d975b6c67f83999aedd57c38ae76f7f24cc981b591c8f850efabb4002a10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a680d975b6c67f83999aedd57c38ae76f7f24cc981b591c8f850efabb4002a10", kill_on_drop: false }`
[INFO] [stdout] a680d975b6c67f83999aedd57c38ae76f7f24cc981b591c8f850efabb4002a10
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 81cf8f4b0fb3ea58d2d2d9dbbb35856f67c1ff2d1b7e1885ceba85ee7c7758aa
[INFO] running `Command { std: "docker" "start" "-a" "81cf8f4b0fb3ea58d2d2d9dbbb35856f67c1ff2d1b7e1885ceba85ee7c7758aa", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling serde_json v1.0.114
[INFO] [stderr]    Compiling itoa v1.0.10
[INFO] [stderr]    Compiling ryu v1.0.17
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.50
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling shelldraw v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `File`
[INFO] [stdout]  --> src/main.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::fs::{self, File};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read` and `Write`
[INFO] [stdout]  --> src/main.rs:5:21
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::{self, Read, Write};
[INFO] [stdout]   |                     ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/main.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |     for y in 0..height {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/main.rs:144:13
[INFO] [stdout]     |
[INFO] [stdout] 144 |         for x in 0..width {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.57s
[INFO] running `Command { std: "docker" "inspect" "81cf8f4b0fb3ea58d2d2d9dbbb35856f67c1ff2d1b7e1885ceba85ee7c7758aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81cf8f4b0fb3ea58d2d2d9dbbb35856f67c1ff2d1b7e1885ceba85ee7c7758aa", kill_on_drop: false }`
[INFO] [stdout] 81cf8f4b0fb3ea58d2d2d9dbbb35856f67c1ff2d1b7e1885ceba85ee7c7758aa
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b4a21d038c785a7e20f6ca6e103ab54b6ecf7b290ea7b93ffb59b8d2f44870d5
[INFO] running `Command { std: "docker" "start" "-a" "b4a21d038c785a7e20f6ca6e103ab54b6ecf7b290ea7b93ffb59b8d2f44870d5", kill_on_drop: false }`
[INFO] [stderr]    Compiling shelldraw v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `File`
[INFO] [stdout]  --> src/main.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::fs::{self, File};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read` and `Write`
[INFO] [stdout]  --> src/main.rs:5:21
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::{self, Read, Write};
[INFO] [stdout]   |                     ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/main.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |     for y in 0..height {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/main.rs:144:13
[INFO] [stdout]     |
[INFO] [stdout] 144 |         for x in 0..width {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "b4a21d038c785a7e20f6ca6e103ab54b6ecf7b290ea7b93ffb59b8d2f44870d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4a21d038c785a7e20f6ca6e103ab54b6ecf7b290ea7b93ffb59b8d2f44870d5", kill_on_drop: false }`
[INFO] [stdout] b4a21d038c785a7e20f6ca6e103ab54b6ecf7b290ea7b93ffb59b8d2f44870d5
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 274cd10f7549ae61d94083d920c7008ecb17171ee5e2cc96f8c30e08bd0319f9
[INFO] running `Command { std: "docker" "start" "-a" "274cd10f7549ae61d94083d920c7008ecb17171ee5e2cc96f8c30e08bd0319f9", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `File`
[INFO] [stderr]  --> src/main.rs:4:21
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::fs::{self, File};
[INFO] [stderr]   |                     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Read` and `Write`
[INFO] [stderr]  --> src/main.rs:5:21
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::io::{self, Read, Write};
[INFO] [stderr]   |                     ^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/main.rs:142:9
[INFO] [stderr]     |
[INFO] [stderr] 142 |     for y in 0..height {
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/main.rs:144:13
[INFO] [stderr]     |
[INFO] [stderr] 144 |         for x in 0..width {
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: `shelldraw` (bin "shelldraw" test) generated 4 warnings (run `cargo fix --bin "shelldraw" --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/shelldraw-000929d38af2ae21)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "274cd10f7549ae61d94083d920c7008ecb17171ee5e2cc96f8c30e08bd0319f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "274cd10f7549ae61d94083d920c7008ecb17171ee5e2cc96f8c30e08bd0319f9", kill_on_drop: false }`
[INFO] [stdout] 274cd10f7549ae61d94083d920c7008ecb17171ee5e2cc96f8c30e08bd0319f9