[INFO] fetching crate soprintln 3.2.1...
[INFO] checking soprintln-3.2.1 against master#8a703520e80d87d4423c01f9d4fbc9e5f6533a02 for pr-154205-1
[INFO] extracting crate soprintln 3.2.1 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate soprintln 3.2.1
[INFO] finished tweaking crates.io crate soprintln 3.2.1
[INFO] tweaked toml for crates.io crate soprintln 3.2.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate soprintln 3.2.1 on toolchain 8a703520e80d87d4423c01f9d4fbc9e5f6533a02
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3968e1092d719997c72bc263cbbafb1e00d3c708db8689670aa2189c3f3ef0bd
[INFO] running `Command { std: "docker" "start" "-a" "3968e1092d719997c72bc263cbbafb1e00d3c708db8689670aa2189c3f3ef0bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3968e1092d719997c72bc263cbbafb1e00d3c708db8689670aa2189c3f3ef0bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3968e1092d719997c72bc263cbbafb1e00d3c708db8689670aa2189c3f3ef0bd", kill_on_drop: false }`
[INFO] [stdout] 3968e1092d719997c72bc263cbbafb1e00d3c708db8689670aa2189c3f3ef0bd
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 14e83655e1fbab61801e1440f90f713f1a0a8d78febe051502b399aa20c092a1
[INFO] running `Command { std: "docker" "start" "-a" "14e83655e1fbab61801e1440f90f713f1a0a8d78febe051502b399aa20c092a1", kill_on_drop: false }`
[INFO] [stderr]     Checking soprintln v3.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/lib.rs:220:17
[INFO] [stdout]     |
[INFO] [stdout] 220 |             let b = Beacon::new("test", 0x12345678 + i);
[INFO] [stdout]     |                 ^
[INFO] [stdout] 221 |             soprintln!("{b}");
[INFO] [stdout]     |                        ----- you might have meant to use string interpolation in this string literal
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: string interpolation only works in `format!` invocations
[INFO] [stdout]     |
[INFO] [stdout] 221 |             soprintln!(format!("{b}"));
[INFO] [stdout]     |                        ++++++++     +
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]     |
[INFO] [stdout] 220 |             let _b = Beacon::new("test", 0x12345678 + i);
[INFO] [stdout]     |                 +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "14e83655e1fbab61801e1440f90f713f1a0a8d78febe051502b399aa20c092a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14e83655e1fbab61801e1440f90f713f1a0a8d78febe051502b399aa20c092a1", kill_on_drop: false }`
[INFO] [stdout] 14e83655e1fbab61801e1440f90f713f1a0a8d78febe051502b399aa20c092a1