[INFO] cloning repository https://github.com/jayar95/magnum
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jayar95/magnum" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjayar95%2Fmagnum", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjayar95%2Fmagnum'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d29d91c5a0c279ccce227f76ece2139cd6b11d80
[INFO] checking jayar95/magnum against master#779e19d8baa3e3625bd4fc5c85cbb2ad47b43155 for pr-147589-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjayar95%2Fmagnum" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jayar95/magnum
[INFO] finished tweaking git repo https://github.com/jayar95/magnum
[INFO] tweaked toml for git repo https://github.com/jayar95/magnum written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jayar95/magnum on toolchain 779e19d8baa3e3625bd4fc5c85cbb2ad47b43155
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jayar95/magnum 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" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 48f31a5df63c434f2f029b315baa0b7aa244e0b465921677bbe1201c5f211030
[INFO] running `Command { std: "docker" "start" "-a" "48f31a5df63c434f2f029b315baa0b7aa244e0b465921677bbe1201c5f211030", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48f31a5df63c434f2f029b315baa0b7aa244e0b465921677bbe1201c5f211030", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48f31a5df63c434f2f029b315baa0b7aa244e0b465921677bbe1201c5f211030", kill_on_drop: false }`
[INFO] [stdout] 48f31a5df63c434f2f029b315baa0b7aa244e0b465921677bbe1201c5f211030
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fa98d590c60b0911604a8fa0c770602efa27edd02622f5aee7dce27997d472d3
[INFO] running `Command { std: "docker" "start" "-a" "fa98d590c60b0911604a8fa0c770602efa27edd02622f5aee7dce27997d472d3", kill_on_drop: false }`
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[INFO] [stderr]     Checking magnum v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Context`, `FutureExt`, `KeyValue`, `SpanKind`, and `TraceContextExt`
[INFO] [stdout]   --> src/main.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |     trace::{FutureExt, SpanKind, TraceContextExt, Tracer as _, TracerProvider as _},
[INFO] [stdout]    |             ^^^^^^^^^  ^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout] 19 |     Context, KeyValue,
[INFO] [stdout]    |     ^^^^^^^  ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Tracer`
[INFO] [stdout]   --> src/main.rs:23:32
[INFO] [stdout]    |
[INFO] [stdout] 23 |     trace::{SdkTracerProvider, Tracer},
[INFO] [stdout]    |                                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::io::AsyncWriteExt`
[INFO] [stdout]   --> src/main.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | use tokio::io::AsyncWriteExt;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Context`, `FutureExt`, `KeyValue`, `SpanKind`, and `TraceContextExt`
[INFO] [stdout]   --> src/main.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |     trace::{FutureExt, SpanKind, TraceContextExt, Tracer as _, TracerProvider as _},
[INFO] [stdout]    |             ^^^^^^^^^  ^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout] 19 |     Context, KeyValue,
[INFO] [stdout]    |     ^^^^^^^  ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Tracer`
[INFO] [stdout]   --> src/main.rs:23:32
[INFO] [stdout]    |
[INFO] [stdout] 23 |     trace::{SdkTracerProvider, Tracer},
[INFO] [stdout]    |                                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::io::AsyncWriteExt`
[INFO] [stdout]   --> src/main.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | use tokio::io::AsyncWriteExt;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tracing_subscriber::layer::SubscriberExt`
[INFO] [stdout]   --> src/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | use tracing_subscriber::layer::SubscriberExt;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Tracer`
[INFO] [stdout]   --> src/main.rs:18:51
[INFO] [stdout]    |
[INFO] [stdout] 18 |     trace::{FutureExt, SpanKind, TraceContextExt, Tracer as _, TracerProvider as _},
[INFO] [stdout]    |                                                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tracing_subscriber::layer::SubscriberExt`
[INFO] [stdout]   --> src/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | use tracing_subscriber::layer::SubscriberExt;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Tracer`
[INFO] [stdout]   --> src/main.rs:18:51
[INFO] [stdout]    |
[INFO] [stdout] 18 |     trace::{FutureExt, SpanKind, TraceContextExt, Tracer as _, TracerProvider as _},
[INFO] [stdout]    |                                                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 56.23s
[INFO] running `Command { std: "docker" "inspect" "fa98d590c60b0911604a8fa0c770602efa27edd02622f5aee7dce27997d472d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa98d590c60b0911604a8fa0c770602efa27edd02622f5aee7dce27997d472d3", kill_on_drop: false }`
[INFO] [stdout] fa98d590c60b0911604a8fa0c770602efa27edd02622f5aee7dce27997d472d3