[INFO] crate mn 0.2.1 is already in cache
[INFO] extracting crate mn 0.2.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/mn/0.2.1
[INFO] extracting crate mn 0.2.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mn/0.2.1
[INFO] validating manifest of mn-0.2.1 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 mn-0.2.1 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 mn-0.2.1
[INFO] finished frobbing mn-0.2.1
[INFO] frobbed toml for mn-0.2.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/mn/0.2.1/Cargo.toml
[INFO] started frobbing mn-0.2.1
[INFO] finished frobbing mn-0.2.1
[INFO] frobbed toml for mn-0.2.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mn/0.2.1/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 mn-0.2.1 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-7/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/mn/0.2.1:/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] ec0be0fb5784218f0bb7fd63f346b7d227dde7da7b5312bb04be0764e8e148f2
[INFO] running `"docker" "start" "-a" "ec0be0fb5784218f0bb7fd63f346b7d227dde7da7b5312bb04be0764e8e148f2"`
[INFO] [stderr]    Compiling bindgen v0.50.0
[INFO] [stderr]    Compiling winapi v0.3.7
[INFO] [stderr]    Compiling roff v0.1.0
[INFO] [stderr]    Compiling shell-words v0.1.0
[INFO] [stderr]    Compiling ansi_colours v1.0.1
[INFO] [stderr]    Compiling content_inspector v0.2.4
[INFO] [stderr]    Compiling git2 v0.7.5
[INFO] [stderr]    Compiling man v0.3.0
[INFO] [stderr]    Compiling winconsole v0.10.0
[INFO] [stderr]    Compiling colored v1.8.0
[INFO] [stderr]    Compiling onig_sys v69.2.0
[INFO] [stderr]    Compiling onig v5.0.0
[INFO] [stderr]    Compiling syntect v3.2.1
[INFO] [stderr]    Compiling prettyprint v0.3.0
[INFO] [stderr]    Compiling mn v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]   --> src/main.rs:57:13
[INFO] [stderr]    |
[INFO] [stderr] 57 |             open::that(&full_path).is_ok();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 48.98s
[INFO] running `"docker" "inspect" "ec0be0fb5784218f0bb7fd63f346b7d227dde7da7b5312bb04be0764e8e148f2"`
[INFO] running `"docker" "rm" "-f" "ec0be0fb5784218f0bb7fd63f346b7d227dde7da7b5312bb04be0764e8e148f2"`
[INFO] [stdout] ec0be0fb5784218f0bb7fd63f346b7d227dde7da7b5312bb04be0764e8e148f2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/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/mn/0.2.1:/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] 4f2ea488c43d40e4207cd659ac46d67c3ac8152d047b6a7302e8fd9c3ebdf2c6
[INFO] running `"docker" "start" "-a" "4f2ea488c43d40e4207cd659ac46d67c3ac8152d047b6a7302e8fd9c3ebdf2c6"`
[INFO] [stderr]    Compiling mn v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]   --> src/main.rs:57:13
[INFO] [stderr]    |
[INFO] [stderr] 57 |             open::that(&full_path).is_ok();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `"docker" "inspect" "4f2ea488c43d40e4207cd659ac46d67c3ac8152d047b6a7302e8fd9c3ebdf2c6"`
[INFO] running `"docker" "rm" "-f" "4f2ea488c43d40e4207cd659ac46d67c3ac8152d047b6a7302e8fd9c3ebdf2c6"`
[INFO] [stdout] 4f2ea488c43d40e4207cd659ac46d67c3ac8152d047b6a7302e8fd9c3ebdf2c6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/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/mn/0.2.1:/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] c46f34bc69ee8b510abf7cca3790b2971a8749fd667ce02c12342391c3c907f5
[INFO] running `"docker" "start" "-a" "c46f34bc69ee8b510abf7cca3790b2971a8749fd667ce02c12342391c3c907f5"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/generate_docs-0916cfdf7cbc6630
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mn-fec71bd1fddd4332
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "c46f34bc69ee8b510abf7cca3790b2971a8749fd667ce02c12342391c3c907f5"`
[INFO] running `"docker" "rm" "-f" "c46f34bc69ee8b510abf7cca3790b2971a8749fd667ce02c12342391c3c907f5"`
[INFO] [stdout] c46f34bc69ee8b510abf7cca3790b2971a8749fd667ce02c12342391c3c907f5