[INFO] crate dahl-bellnumber 0.1.0 is already in cache
[INFO] testing dahl-bellnumber-0.1.0 against beta-2020-07-24 for beta-1.46-1
[INFO] extracting crate dahl-bellnumber 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate dahl-bellnumber 0.1.0 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dahl-bellnumber 0.1.0
[INFO] finished tweaking crates.io crate dahl-bellnumber 0.1.0
[INFO] tweaked toml for crates.io crate dahl-bellnumber 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e9c0554aae814395e0fc6ef34e6ea2f1f1db3137397d3b1434de6aff9de9e346
[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" "e9c0554aae814395e0fc6ef34e6ea2f1f1db3137397d3b1434de6aff9de9e346", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e9c0554aae814395e0fc6ef34e6ea2f1f1db3137397d3b1434de6aff9de9e346", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9c0554aae814395e0fc6ef34e6ea2f1f1db3137397d3b1434de6aff9de9e346", kill_on_drop: false }`
[INFO] [stdout] e9c0554aae814395e0fc6ef34e6ea2f1f1db3137397d3b1434de6aff9de9e346
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d472e97527d3e13c05050dc15231b6468d8c9bed30c7901850d1a47690027b70
[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" "d472e97527d3e13c05050dc15231b6468d8c9bed30c7901850d1a47690027b70", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling dahl-bellnumber v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.74s
[INFO] running `Command { std: "docker" "inspect" "d472e97527d3e13c05050dc15231b6468d8c9bed30c7901850d1a47690027b70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d472e97527d3e13c05050dc15231b6468d8c9bed30c7901850d1a47690027b70", kill_on_drop: false }`
[INFO] [stdout] d472e97527d3e13c05050dc15231b6468d8c9bed30c7901850d1a47690027b70
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a55f8ce9b9a4f338d61a9617c1989ba2d6b80c531f6bd6b8df40b3e43035af2
[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" "9a55f8ce9b9a4f338d61a9617c1989ba2d6b80c531f6bd6b8df40b3e43035af2", kill_on_drop: false }`
[INFO] [stderr]    Compiling dahl-bellnumber v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "9a55f8ce9b9a4f338d61a9617c1989ba2d6b80c531f6bd6b8df40b3e43035af2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a55f8ce9b9a4f338d61a9617c1989ba2d6b80c531f6bd6b8df40b3e43035af2", kill_on_drop: false }`
[INFO] [stdout] 9a55f8ce9b9a4f338d61a9617c1989ba2d6b80c531f6bd6b8df40b3e43035af2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6a297d872e903ca12912df888bebacbd0947e84c46f7f1e21ac5afdcffadbb4d
[INFO] running `Command { std: "docker" "start" "-a" "6a297d872e903ca12912df888bebacbd0947e84c46f7f1e21ac5afdcffadbb4d", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/dahl_bellnumber-47d7a0ec2254a1ed
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_lbell ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests dahl-bellnumber
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - lbell (line 54) ... FAILED
[INFO] [stdout] test src/lib.rs - bell (line 25) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - lbell (line 54) stdout ----
[INFO] [stdout] error[E0689]: can't call method `log` on ambiguous numeric type `{float}`
[INFO] [stdout]  --> src/lib.rs:57:25
[INFO] [stdout]   |
[INFO] [stdout] 6 | assert_eq!(answer, 52.0.log());
[INFO] [stdout]   |                         ^^^
[INFO] [stdout]   |
[INFO] [stdout] help: you must specify a concrete type for this numeric value, like `f32`
[INFO] [stdout]   |
[INFO] [stdout] 6 | assert_eq!(answer, 52.0_f32.log());
[INFO] [stdout]   |                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0689`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - lbell (line 54)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "6a297d872e903ca12912df888bebacbd0947e84c46f7f1e21ac5afdcffadbb4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a297d872e903ca12912df888bebacbd0947e84c46f7f1e21ac5afdcffadbb4d", kill_on_drop: false }`
[INFO] [stdout] 6a297d872e903ca12912df888bebacbd0947e84c46f7f1e21ac5afdcffadbb4d