[INFO] fetching crate soprintln 3.2.1...
[INFO] testing soprintln-3.2.1 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1
[INFO] extracting crate soprintln 3.2.1 into /workspace/builds/worker-0-tc2/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-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate soprintln 3.2.1 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 13c8e9d4baccfcf7b773f35259370c3078562b66a6d4486e9a377ee61b9ec1eb
[INFO] running `Command { std: "docker" "start" "-a" "13c8e9d4baccfcf7b773f35259370c3078562b66a6d4486e9a377ee61b9ec1eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "13c8e9d4baccfcf7b773f35259370c3078562b66a6d4486e9a377ee61b9ec1eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13c8e9d4baccfcf7b773f35259370c3078562b66a6d4486e9a377ee61b9ec1eb", kill_on_drop: false }`
[INFO] [stdout] 13c8e9d4baccfcf7b773f35259370c3078562b66a6d4486e9a377ee61b9ec1eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b0a9da7b27f1a638adecc042b4b6f37e4dce6fb478a3371796136d71512cac1
[INFO] running `Command { std: "docker" "start" "-a" "6b0a9da7b27f1a638adecc042b4b6f37e4dce6fb478a3371796136d71512cac1", kill_on_drop: false }`
[INFO] [stderr]    Compiling soprintln v3.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "6b0a9da7b27f1a638adecc042b4b6f37e4dce6fb478a3371796136d71512cac1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b0a9da7b27f1a638adecc042b4b6f37e4dce6fb478a3371796136d71512cac1", kill_on_drop: false }`
[INFO] [stdout] 6b0a9da7b27f1a638adecc042b4b6f37e4dce6fb478a3371796136d71512cac1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ad685a5a0625602e33fe12251bb15a2e1a1b76f64ad163fb1559578032a4349
[INFO] running `Command { std: "docker" "start" "-a" "1ad685a5a0625602e33fe12251bb15a2e1a1b76f64ad163fb1559578032a4349", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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 `test` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "1ad685a5a0625602e33fe12251bb15a2e1a1b76f64ad163fb1559578032a4349", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ad685a5a0625602e33fe12251bb15a2e1a1b76f64ad163fb1559578032a4349", kill_on_drop: false }`
[INFO] [stdout] 1ad685a5a0625602e33fe12251bb15a2e1a1b76f64ad163fb1559578032a4349
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 347979ef65f920f482c2eee38a791ebc8b10721b3bb5406645261134dfbe824c
[INFO] running `Command { std: "docker" "start" "-a" "347979ef65f920f482c2eee38a791ebc8b10721b3bb5406645261134dfbe824c", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/lib.rs:220:17
[INFO] [stderr]     |
[INFO] [stderr] 220 |             let b = Beacon::new("test", 0x12345678 + i);
[INFO] [stderr]     |                 ^
[INFO] [stderr] 221 |             soprintln!("{b}");
[INFO] [stderr]     |                        ----- you might have meant to use string interpolation in this string literal
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: string interpolation only works in `format!` invocations
[INFO] [stderr]     |
[INFO] [stderr] 221 |             soprintln!(format!("{b}"));
[INFO] [stderr]     |                        ++++++++     +
[INFO] [stderr] help: if this is intentional, prefix it with an underscore
[INFO] [stderr]     |
[INFO] [stderr] 220 |             let _b = Beacon::new("test", 0x12345678 + i);
[INFO] [stderr]     |                 +
[INFO] [stderr] 
[INFO] [stderr] warning: `soprintln` (lib test) generated 1 warning (run `cargo fix --lib -p soprintln --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/soprintln-53aee693862370b7)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::test_soprintln ... ok
[INFO] [stdout] test tests::test_beacon ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.25s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests soprintln
[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" "347979ef65f920f482c2eee38a791ebc8b10721b3bb5406645261134dfbe824c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "347979ef65f920f482c2eee38a791ebc8b10721b3bb5406645261134dfbe824c", kill_on_drop: false }`
[INFO] [stdout] 347979ef65f920f482c2eee38a791ebc8b10721b3bb5406645261134dfbe824c