[INFO] fetching crate hexponent 0.3.1...
[INFO] testing hexponent-0.3.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate hexponent 0.3.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate hexponent 0.3.1 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hexponent 0.3.1
[INFO] finished tweaking crates.io crate hexponent 0.3.1
[INFO] tweaked toml for crates.io crate hexponent 0.3.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b00d25caf4371a127713ca4bb98e3bb9f63ef5d13d8186da8721c8f97ac746df
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b00d25caf4371a127713ca4bb98e3bb9f63ef5d13d8186da8721c8f97ac746df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b00d25caf4371a127713ca4bb98e3bb9f63ef5d13d8186da8721c8f97ac746df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b00d25caf4371a127713ca4bb98e3bb9f63ef5d13d8186da8721c8f97ac746df", kill_on_drop: false }`
[INFO] [stdout] b00d25caf4371a127713ca4bb98e3bb9f63ef5d13d8186da8721c8f97ac746df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f82640ff189b581334956f10ad55da2254949ee19911aefba9ca5714c9325b81
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f82640ff189b581334956f10ad55da2254949ee19911aefba9ca5714c9325b81", kill_on_drop: false }`
[INFO] [stderr]    Compiling hexponent v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `Command { std: "docker" "inspect" "f82640ff189b581334956f10ad55da2254949ee19911aefba9ca5714c9325b81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f82640ff189b581334956f10ad55da2254949ee19911aefba9ca5714c9325b81", kill_on_drop: false }`
[INFO] [stdout] f82640ff189b581334956f10ad55da2254949ee19911aefba9ca5714c9325b81
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c8c2a99ff43b30a862f53d31d10146ca60b30fbb1a2b27d083414cc844f42cb
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9c8c2a99ff43b30a862f53d31d10146ca60b30fbb1a2b27d083414cc844f42cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling hexponent v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `f64_to_string`
[INFO] [stdout]    --> src/tests.rs:242:12
[INFO] [stdout]     |
[INFO] [stdout] 242 |     pub fn f64_to_string(f: f64) -> Result<Vec<u8>, ()> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.45s
[INFO] running `Command { std: "docker" "inspect" "9c8c2a99ff43b30a862f53d31d10146ca60b30fbb1a2b27d083414cc844f42cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c8c2a99ff43b30a862f53d31d10146ca60b30fbb1a2b27d083414cc844f42cb", kill_on_drop: false }`
[INFO] [stdout] 9c8c2a99ff43b30a862f53d31d10146ca60b30fbb1a2b27d083414cc844f42cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 070de26bc20ed8d58177d11ece0c52dfc43807640e67f9b58cee94d194c7a626
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "070de26bc20ed8d58177d11ece0c52dfc43807640e67f9b58cee94d194c7a626", kill_on_drop: false }`
[INFO] [stderr] warning: function is never used: `f64_to_string`
[INFO] [stderr]    --> src/tests.rs:242:12
[INFO] [stderr]     |
[INFO] [stderr] 242 |     pub fn f64_to_string(f: f64) -> Result<Vec<u8>, ()> {
[INFO] [stderr]     |            ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/hexponent-a0f0ff785aadeb0b
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test tests::test_subnormal ... ignored
[INFO] [stdout] test tests::test_double_precision ... ok
[INFO] [stdout] test tests::test_zero ... ok
[INFO] [stdout] test tests::test_zero_trimming ... ok
[INFO] [stdout] test tests::test_overflow_underflow ... ok
[INFO] [stdout] test tests::rcc_tests ... ok
[INFO] [stdout] test tests::test_integers ... ok
[INFO] [stdout] test tests::test_fractions ... ok
[INFO] [stdout] test tests::test_imprecise_conversions ... ok
[INFO] [stdout] test tests::test_incomplete ... ok
[INFO] [stdout] test tests::test_exponents ... ok
[INFO] [stdout] test tests::test_error_indecies ... ok
[INFO] [stdout] test tests::test_fuzzer_finds ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests hexponent
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 11) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "070de26bc20ed8d58177d11ece0c52dfc43807640e67f9b58cee94d194c7a626", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "070de26bc20ed8d58177d11ece0c52dfc43807640e67f9b58cee94d194c7a626", kill_on_drop: false }`
[INFO] [stdout] 070de26bc20ed8d58177d11ece0c52dfc43807640e67f9b58cee94d194c7a626