[INFO] fetching crate rustc-semver 1.1.0...
[INFO] testing rustc-semver-1.1.0 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-2
[INFO] extracting crate rustc-semver 1.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] removed /workspace/builds/worker-4-tc1/source/rust-toolchain
[INFO] started tweaking crates.io crate rustc-semver 1.1.0
[INFO] finished tweaking crates.io crate rustc-semver 1.1.0
[INFO] tweaked toml for crates.io crate rustc-semver 1.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rustc-semver 1.1.0 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "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" "+562dee4820c458d823175268e41601d4c060588a" "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" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5fef2da8efabf63a873c199de491cf3c3997e144a2fcb24df179b73408ca53d3
[INFO] running `Command { std: "docker" "start" "-a" "5fef2da8efabf63a873c199de491cf3c3997e144a2fcb24df179b73408ca53d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5fef2da8efabf63a873c199de491cf3c3997e144a2fcb24df179b73408ca53d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fef2da8efabf63a873c199de491cf3c3997e144a2fcb24df179b73408ca53d3", kill_on_drop: false }`
[INFO] [stdout] 5fef2da8efabf63a873c199de491cf3c3997e144a2fcb24df179b73408ca53d3
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5e7a75bdcab2cd65d6b340c9b44d8e4c8c0cdb9101c99ca5f98cc43bbb9d08b4
[INFO] running `Command { std: "docker" "start" "-a" "5e7a75bdcab2cd65d6b340c9b44d8e4c8c0cdb9101c99ca5f98cc43bbb9d08b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustc-semver v1.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "5e7a75bdcab2cd65d6b340c9b44d8e4c8c0cdb9101c99ca5f98cc43bbb9d08b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e7a75bdcab2cd65d6b340c9b44d8e4c8c0cdb9101c99ca5f98cc43bbb9d08b4", kill_on_drop: false }`
[INFO] [stdout] 5e7a75bdcab2cd65d6b340c9b44d8e4c8c0cdb9101c99ca5f98cc43bbb9d08b4
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dbb620ab8cb46cd90a6cf1f0d21710ae0a8c3ba970ef2932550a9cbb28a321cb
[INFO] running `Command { std: "docker" "start" "-a" "dbb620ab8cb46cd90a6cf1f0d21710ae0a8c3ba970ef2932550a9cbb28a321cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustc-semver v1.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]    --> src/lib.rs:655:9
[INFO] [stdout]     |
[INFO] [stdout] 655 |         OmittedParts::from(0);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 655 |         let _ = OmittedParts::from(0);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]    --> src/lib.rs:663:9
[INFO] [stdout]     |
[INFO] [stdout] 663 |         OmittedParts::from(4);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 663 |         let _ = OmittedParts::from(4);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "dbb620ab8cb46cd90a6cf1f0d21710ae0a8c3ba970ef2932550a9cbb28a321cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbb620ab8cb46cd90a6cf1f0d21710ae0a8c3ba970ef2932550a9cbb28a321cb", kill_on_drop: false }`
[INFO] [stdout] dbb620ab8cb46cd90a6cf1f0d21710ae0a8c3ba970ef2932550a9cbb28a321cb
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6535dded000686c354258fba83ed3b2e7c54e7fc18b1cf5051deb4de8e96d19b
[INFO] running `Command { std: "docker" "start" "-a" "6535dded000686c354258fba83ed3b2e7c54e7fc18b1cf5051deb4de8e96d19b", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `from` that must be used
[INFO] [stderr]    --> src/lib.rs:655:9
[INFO] [stderr]     |
[INFO] [stderr] 655 |         OmittedParts::from(0);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 655 |         let _ = OmittedParts::from(0);
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `from` that must be used
[INFO] [stderr]    --> src/lib.rs:663:9
[INFO] [stderr]     |
[INFO] [stderr] 663 |         OmittedParts::from(4);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 663 |         let _ = OmittedParts::from(4);
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `rustc-semver` (lib test) generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rustc_semver-d42af72018e90937)
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test test::alpha_numeric_version ... ok
[INFO] [stdout] test test::edge_cases ... ok
[INFO] [stdout] test test::equal ... ok
[INFO] [stdout] test test::greater_than ... ok
[INFO] [stdout] test test::less_than ... ok
[INFO] [stdout] test test::formatting ... ok
[INFO] [stdout] test test::meets_full ... ok
[INFO] [stdout] test test::meets_special ... ok
[INFO] [stdout] test test::omitted_parts ... ok
[INFO] [stdout] test test::meets_no_minor ... ok
[INFO] [stdout] test test::special_versions ... ok
[INFO] [stdout] test test::meets_no_patch ... ok
[INFO] [stdout] test test::too_many_elements ... ok
[INFO] [stdout] test test::omitted_parts_with_four - should panic ... ok
[INFO] [stdout] test test::omitted_parts_with_zero - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rustc_semver
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/lib.rs - RustcVersion::meets (line 334) ... ok
[INFO] [stdout] test src/lib.rs - RustcVersion::new (line 239) ... ok
[INFO] [stdout] test src/lib.rs - RustcVersion (line 43) ... ok
[INFO] [stdout] test src/lib.rs - RustcVersion::parse (line 269) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.26s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6535dded000686c354258fba83ed3b2e7c54e7fc18b1cf5051deb4de8e96d19b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6535dded000686c354258fba83ed3b2e7c54e7fc18b1cf5051deb4de8e96d19b", kill_on_drop: false }`
[INFO] [stdout] 6535dded000686c354258fba83ed3b2e7c54e7fc18b1cf5051deb4de8e96d19b