[INFO] fetching crate nimber 0.1.1...
[INFO] testing nimber-0.1.1 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-2
[INFO] extracting crate nimber 0.1.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate nimber 0.1.1
[INFO] finished tweaking crates.io crate nimber 0.1.1
[INFO] tweaked toml for crates.io crate nimber 0.1.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate nimber 0.1.1 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] crate crates.io crate nimber 0.1.1 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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 80313b7fd2cb23d39467b15a64382d5a542f41bf2ca709a3aacfe5e079acab25
[INFO] running `Command { std: "docker" "start" "-a" "80313b7fd2cb23d39467b15a64382d5a542f41bf2ca709a3aacfe5e079acab25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "80313b7fd2cb23d39467b15a64382d5a542f41bf2ca709a3aacfe5e079acab25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80313b7fd2cb23d39467b15a64382d5a542f41bf2ca709a3aacfe5e079acab25", kill_on_drop: false }`
[INFO] [stdout] 80313b7fd2cb23d39467b15a64382d5a542f41bf2ca709a3aacfe5e079acab25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 8798c97bf96dff67dd28911772c5aa0885daa57c51c6fc07a8177c2c00e321f7
[INFO] running `Command { std: "docker" "start" "-a" "8798c97bf96dff67dd28911772c5aa0885daa57c51c6fc07a8177c2c00e321f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling itertools v0.14.0
[INFO] [stderr]    Compiling nimber v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/finite.rs:494:15
[INFO] [stdout]     |
[INFO] [stdout] 494 |     fn to_ref(&self) -> FiniteNimberRef {
[INFO] [stdout]     |               ^^^^^     ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |               |
[INFO] [stdout]     |               the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 494 |     fn to_ref(&self) -> FiniteNimberRef<'_> {
[INFO] [stdout]     |                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.16s
[INFO] running `Command { std: "docker" "inspect" "8798c97bf96dff67dd28911772c5aa0885daa57c51c6fc07a8177c2c00e321f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8798c97bf96dff67dd28911772c5aa0885daa57c51c6fc07a8177c2c00e321f7", kill_on_drop: false }`
[INFO] [stdout] 8798c97bf96dff67dd28911772c5aa0885daa57c51c6fc07a8177c2c00e321f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 48c9c72c3085902bda3baea7c749b9c69b8ca5389fbaf14922fcbd7598c3b7c6
[INFO] running `Command { std: "docker" "start" "-a" "48c9c72c3085902bda3baea7c749b9c69b8ca5389fbaf14922fcbd7598c3b7c6", kill_on_drop: false }`
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/finite.rs:494:15
[INFO] [stdout]     |
[INFO] [stdout] 494 |     fn to_ref(&self) -> FiniteNimberRef {
[INFO] [stdout]     |               ^^^^^     ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |               |
[INFO] [stdout]     |               the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 494 |     fn to_ref(&self) -> FiniteNimberRef<'_> {
[INFO] [stdout]     |                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling nimber v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/finite.rs:494:15
[INFO] [stdout]     |
[INFO] [stdout] 494 |     fn to_ref(&self) -> FiniteNimberRef {
[INFO] [stdout]     |               ^^^^^     ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |               |
[INFO] [stdout]     |               the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 494 |     fn to_ref(&self) -> FiniteNimberRef<'_> {
[INFO] [stdout]     |                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.16s
[INFO] running `Command { std: "docker" "inspect" "48c9c72c3085902bda3baea7c749b9c69b8ca5389fbaf14922fcbd7598c3b7c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48c9c72c3085902bda3baea7c749b9c69b8ca5389fbaf14922fcbd7598c3b7c6", kill_on_drop: false }`
[INFO] [stdout] 48c9c72c3085902bda3baea7c749b9c69b8ca5389fbaf14922fcbd7598c3b7c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 8c13e4f185446228ac395448eff2d8a16ae766c9747eedb3faa3521b8bec99da
[INFO] running `Command { std: "docker" "start" "-a" "8c13e4f185446228ac395448eff2d8a16ae766c9747eedb3faa3521b8bec99da", kill_on_drop: false }`
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/finite.rs:494:15
[INFO] [stderr]     |
[INFO] [stderr] 494 |     fn to_ref(&self) -> FiniteNimberRef {
[INFO] [stderr]     |               ^^^^^     ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |               |
[INFO] [stderr]     |               the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 494 |     fn to_ref(&self) -> FiniteNimberRef<'_> {
[INFO] [stderr]     |                                        ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `nimber` (lib) generated 1 warning (run `cargo fix --lib -p nimber` to apply 1 suggestion)
[INFO] [stderr] warning: `nimber` (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/nimber-56bbdcffc97ae149)
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test finite::tests::addition ... ok
[INFO] [stdout] test finite::tests::join ... ok
[INFO] [stdout] test finite::tests::levels ... ok
[INFO] [stdout] test finite::tests::split ... ok
[INFO] [stdout] test finite::tests::mul_by_h ... ok
[INFO] [stdout] test finite::tests::sqrt ... ok
[INFO] [stdout] test finite::tests::square ... ok
[INFO] [stdout] test finite::tests::div0 - should panic ... ok
[INFO] [stdout] test finite::tests::mul ... ok
[INFO] [stdout] test finite::tests::div ... ok
[INFO] [stdout] test finite::tests::quadratic ... ok
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests nimber
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.41s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test src/finite.rs - finite::FiniteNimber::quadratic2 (line 1239) ... ok
[INFO] [stdout] test src/finite.rs - finite::FiniteNimber::quadratic1 (line 1204) ... ok
[INFO] [stdout] test src/finite.rs - finite::FiniteNimber::sqrt (line 1183) ... ok
[INFO] [stdout] test src/finite.rs - finite::FiniteNimber::quadratic3 (line 1282) ... ok
[INFO] [stdout] test src/finite.rs - finite::FiniteNimber::square (line 1165) ... ok
[INFO] [stdout] test src/finite.rs - finite::FiniteNimber (line 49) ... ok
[INFO] [stdout] test src/lib.rs - (line 20) ... ok
[INFO] [stdout] test src/finite.rs - finite::FiniteNimber::fmt (line 257) ... ok
[INFO] [stdout] test src/finite.rs - finite::FiniteNimber::as_slice (line 1131) ... ok
[INFO] [stdout] test src/finite.rs - finite::FiniteNimber::fmt (line 198) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.28s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8c13e4f185446228ac395448eff2d8a16ae766c9747eedb3faa3521b8bec99da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c13e4f185446228ac395448eff2d8a16ae766c9747eedb3faa3521b8bec99da", kill_on_drop: false }`
[INFO] [stdout] 8c13e4f185446228ac395448eff2d8a16ae766c9747eedb3faa3521b8bec99da