[INFO] crate factorial 0.1.1 is already in cache
[INFO] extracting crate factorial 0.1.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/factorial/0.1.1
[INFO] extracting crate factorial 0.1.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/factorial/0.1.1
[INFO] validating manifest of factorial-0.1.1 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of factorial-0.1.1 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing factorial-0.1.1
[INFO] finished frobbing factorial-0.1.1
[INFO] frobbed toml for factorial-0.1.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/factorial/0.1.1/Cargo.toml
[INFO] started frobbing factorial-0.1.1
[INFO] finished frobbing factorial-0.1.1
[INFO] frobbed toml for factorial-0.1.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/factorial/0.1.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing factorial-0.1.1 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/factorial/0.1.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 75ed72b78b019cbdedf937e635cba9c5ef866d9a509bf6b11b5582e22b493257
[INFO] running `"docker" "start" "-a" "75ed72b78b019cbdedf937e635cba9c5ef866d9a509bf6b11b5582e22b493257"`
[INFO] [stderr]    Compiling factorial v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Signed`
[INFO] [stderr]   --> src/lib.rs:12:30
[INFO] [stderr]    |
[INFO] [stderr] 12 | use num_traits::{CheckedMul, Signed, Unsigned};
[INFO] [stderr]    |                              ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::RangeInclusive`
[INFO] [stderr]   --> src/lib.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::ops::RangeInclusive;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `"docker" "inspect" "75ed72b78b019cbdedf937e635cba9c5ef866d9a509bf6b11b5582e22b493257"`
[INFO] running `"docker" "rm" "-f" "75ed72b78b019cbdedf937e635cba9c5ef866d9a509bf6b11b5582e22b493257"`
[INFO] [stdout] 75ed72b78b019cbdedf937e635cba9c5ef866d9a509bf6b11b5582e22b493257
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/factorial/0.1.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] b4c6f585c0464bdea9e605e54c1702fc2fd3a35961df5708cccd732b79e1d88b
[INFO] running `"docker" "start" "-a" "b4c6f585c0464bdea9e605e54c1702fc2fd3a35961df5708cccd732b79e1d88b"`
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling factorial v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Signed`
[INFO] [stderr]   --> src/lib.rs:12:30
[INFO] [stderr]    |
[INFO] [stderr] 12 | use num_traits::{CheckedMul, Signed, Unsigned};
[INFO] [stderr]    |                              ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::RangeInclusive`
[INFO] [stderr]   --> src/lib.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::ops::RangeInclusive;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.15s
[INFO] running `"docker" "inspect" "b4c6f585c0464bdea9e605e54c1702fc2fd3a35961df5708cccd732b79e1d88b"`
[INFO] running `"docker" "rm" "-f" "b4c6f585c0464bdea9e605e54c1702fc2fd3a35961df5708cccd732b79e1d88b"`
[INFO] [stdout] b4c6f585c0464bdea9e605e54c1702fc2fd3a35961df5708cccd732b79e1d88b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/factorial/0.1.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] c59cefa26b4e674ce3a760de3eca09784311243a0503a12cf606adfa68819b8e
[INFO] running `"docker" "start" "-a" "c59cefa26b4e674ce3a760de3eca09784311243a0503a12cf606adfa68819b8e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/factorial-13ac10e510834ef0
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test tests::ten_fact ... ok
[INFO] [stdout] test tests::two_fact_is_two ... ok
[INFO] [stdout] test tests::too_large_safe ... ok
[INFO] [stdout] test tests::zero_fact_is_one ... ok
[INFO] [stdout] test tests::one_fact_is_one ... ok
[INFO] [stdout] test tests::biguint_support ... ok
[INFO] [stdout] test tests::too_large ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests factorial
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - Factorial::checked_factorial (line 23) ... ok
[INFO] [stdout] test src/lib.rs - Factorial::factorial (line 32) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "c59cefa26b4e674ce3a760de3eca09784311243a0503a12cf606adfa68819b8e"`
[INFO] running `"docker" "rm" "-f" "c59cefa26b4e674ce3a760de3eca09784311243a0503a12cf606adfa68819b8e"`
[INFO] [stdout] c59cefa26b4e674ce3a760de3eca09784311243a0503a12cf606adfa68819b8e