[INFO] fetching crate signum-sign 0.1.4-beta.2...
[INFO] testing signum-sign-0.1.4-beta.2 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate signum-sign 0.1.4-beta.2 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate signum-sign 0.1.4-beta.2
[INFO] finished tweaking crates.io crate signum-sign 0.1.4-beta.2
[INFO] tweaked toml for crates.io crate signum-sign 0.1.4-beta.2 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate signum-sign 0.1.4-beta.2 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "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" "+beta-2026-04-21" "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" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9352a5edaea4cb9a05f47a41ddef068317ba39f1b1907e0aec6d054cc85d1882
[INFO] running `Command { std: "docker" "start" "-a" "9352a5edaea4cb9a05f47a41ddef068317ba39f1b1907e0aec6d054cc85d1882", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9352a5edaea4cb9a05f47a41ddef068317ba39f1b1907e0aec6d054cc85d1882", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9352a5edaea4cb9a05f47a41ddef068317ba39f1b1907e0aec6d054cc85d1882", kill_on_drop: false }`
[INFO] [stdout] 9352a5edaea4cb9a05f47a41ddef068317ba39f1b1907e0aec6d054cc85d1882
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8fe2d8d59e546c48e2506d8602145f8e75f7416497b64e412907a2c559a186ff
[INFO] running `Command { std: "docker" "start" "-a" "8fe2d8d59e546c48e2506d8602145f8e75f7416497b64e412907a2c559a186ff", kill_on_drop: false }`
[INFO] [stderr]    Compiling signum-sign v0.1.4-beta.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `e` is never read
[INFO] [stdout]   --> src/lib.rs:15:17
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let mut e = 0_f64;
[INFO] [stdout]    |                 ^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 18 |         e = (s - (r * r)) / (2_f64 * r);
[INFO] [stdout]    |         ------------------------------- `e` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "8fe2d8d59e546c48e2506d8602145f8e75f7416497b64e412907a2c559a186ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fe2d8d59e546c48e2506d8602145f8e75f7416497b64e412907a2c559a186ff", kill_on_drop: false }`
[INFO] [stdout] 8fe2d8d59e546c48e2506d8602145f8e75f7416497b64e412907a2c559a186ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 47df865f5d7c68f855a3f66717ff1313d6d0a59d522b4453cf79a82460e1bb32
[INFO] running `Command { std: "docker" "start" "-a" "47df865f5d7c68f855a3f66717ff1313d6d0a59d522b4453cf79a82460e1bb32", kill_on_drop: false }`
[INFO] [stdout] warning: value assigned to `e` is never read
[INFO] [stdout]   --> src/lib.rs:15:17
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let mut e = 0_f64;
[INFO] [stdout]    |                 ^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 18 |         e = (s - (r * r)) / (2_f64 * r);
[INFO] [stdout]    |         ------------------------------- `e` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling signum-sign v0.1.4-beta.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `e` is never read
[INFO] [stdout]   --> src/lib.rs:15:17
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let mut e = 0_f64;
[INFO] [stdout]    |                 ^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 18 |         e = (s - (r * r)) / (2_f64 * r);
[INFO] [stdout]    |         ------------------------------- `e` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "47df865f5d7c68f855a3f66717ff1313d6d0a59d522b4453cf79a82460e1bb32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47df865f5d7c68f855a3f66717ff1313d6d0a59d522b4453cf79a82460e1bb32", kill_on_drop: false }`
[INFO] [stdout] 47df865f5d7c68f855a3f66717ff1313d6d0a59d522b4453cf79a82460e1bb32
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cf87277f07e436c3bbcb2272cf970eb07a256ec26df3581f34151863f281f6ac
[INFO] running `Command { std: "docker" "start" "-a" "cf87277f07e436c3bbcb2272cf970eb07a256ec26df3581f34151863f281f6ac", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `e` is never read
[INFO] [stderr]   --> src/lib.rs:15:17
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let mut e = 0_f64;
[INFO] [stderr]    |                 ^^^^^ this value is reassigned later and never used
[INFO] [stderr] ...
[INFO] [stderr] 18 |         e = (s - (r * r)) / (2_f64 * r);
[INFO] [stderr]    |         ------------------------------- `e` is overwritten here before the previous value is read
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `signum-sign` (lib) generated 1 warning
[INFO] [stderr] warning: `signum-sign` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/signum_sign-fcb5dd41bf827bd0)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/heron.rs (/opt/rustwide/target/debug/deps/heron-d36244fc0ac1a28d)
[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] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test twothousandheron ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/negative.rs (/opt/rustwide/target/debug/deps/negative-5241112d621fe32a)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test negative ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/positive.rs (/opt/rustwide/target/debug/deps/positive-1e211a54e3f1209f)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test positive ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/zero.rs (/opt/rustwide/target/debug/deps/zero-bb8bd57514c77803)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests signum_sign
[INFO] [stdout] running 1 test
[INFO] [stdout] test zero ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[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" "cf87277f07e436c3bbcb2272cf970eb07a256ec26df3581f34151863f281f6ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf87277f07e436c3bbcb2272cf970eb07a256ec26df3581f34151863f281f6ac", kill_on_drop: false }`
[INFO] [stdout] cf87277f07e436c3bbcb2272cf970eb07a256ec26df3581f34151863f281f6ac
