[INFO] crate littlefs 0.2.0 is already in cache
[INFO] extracting crate littlefs 0.2.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/littlefs/0.2.0
[INFO] extracting crate littlefs 0.2.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/littlefs/0.2.0
[INFO] validating manifest of littlefs-0.2.0 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 littlefs-0.2.0 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 littlefs-0.2.0
[INFO] finished frobbing littlefs-0.2.0
[INFO] frobbed toml for littlefs-0.2.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/littlefs/0.2.0/Cargo.toml
[INFO] started frobbing littlefs-0.2.0
[INFO] finished frobbing littlefs-0.2.0
[INFO] frobbed toml for littlefs-0.2.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/littlefs/0.2.0/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 littlefs-0.2.0 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-0/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/littlefs/0.2.0:/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] 74c31ff4b2d15d2f5d13d06b7b5739f79bca7a624622299ef143b54e4ff9dafc
[INFO] running `"docker" "start" "-a" "74c31ff4b2d15d2f5d13d06b7b5739f79bca7a624622299ef143b54e4ff9dafc"`
[INFO] [stderr]    Compiling cty v0.1.5
[INFO] [stderr]    Compiling littlefs-sys v0.2.0
[INFO] [stderr]    Compiling littlefs v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/lib.rs:219:1
[INFO] [stderr]     |
[INFO] [stderr] 219 | / /// Definition of file open flags which can be mixed and matched as appropriate. These definitions
[INFO] [stderr] 220 | | /// are reminiscent of the ones defined by POSIX.
[INFO] [stderr]     | |_________________________________________________^
[INFO] [stderr] 221 | / bitflags! {
[INFO] [stderr] 222 | |     pub struct FileOpenFlags: u32 {
[INFO] [stderr] 223 | |         /// Open file in read only mode.
[INFO] [stderr] 224 | |         const RDONLY = 0x1;
[INFO] [stderr] ...   |
[INFO] [stderr] 237 | |     }
[INFO] [stderr] 238 | | }
[INFO] [stderr]     | |_- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.69s
[INFO] running `"docker" "inspect" "74c31ff4b2d15d2f5d13d06b7b5739f79bca7a624622299ef143b54e4ff9dafc"`
[INFO] running `"docker" "rm" "-f" "74c31ff4b2d15d2f5d13d06b7b5739f79bca7a624622299ef143b54e4ff9dafc"`
[INFO] [stdout] 74c31ff4b2d15d2f5d13d06b7b5739f79bca7a624622299ef143b54e4ff9dafc
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/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/littlefs/0.2.0:/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] a63de298d36a925ebd06be0a979e021cef21ccb78c6431469a9d5f773a462f5a
[INFO] running `"docker" "start" "-a" "a63de298d36a925ebd06be0a979e021cef21ccb78c6431469a9d5f773a462f5a"`
[INFO] [stderr]    Compiling littlefs v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/lib.rs:219:1
[INFO] [stderr]     |
[INFO] [stderr] 219 | / /// Definition of file open flags which can be mixed and matched as appropriate. These definitions
[INFO] [stderr] 220 | | /// are reminiscent of the ones defined by POSIX.
[INFO] [stderr]     | |_________________________________________________^
[INFO] [stderr] 221 | / bitflags! {
[INFO] [stderr] 222 | |     pub struct FileOpenFlags: u32 {
[INFO] [stderr] 223 | |         /// Open file in read only mode.
[INFO] [stderr] 224 | |         const RDONLY = 0x1;
[INFO] [stderr] ...   |
[INFO] [stderr] 237 | |     }
[INFO] [stderr] 238 | | }
[INFO] [stderr]     | |_- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.08s
[INFO] running `"docker" "inspect" "a63de298d36a925ebd06be0a979e021cef21ccb78c6431469a9d5f773a462f5a"`
[INFO] running `"docker" "rm" "-f" "a63de298d36a925ebd06be0a979e021cef21ccb78c6431469a9d5f773a462f5a"`
[INFO] [stdout] a63de298d36a925ebd06be0a979e021cef21ccb78c6431469a9d5f773a462f5a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/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/littlefs/0.2.0:/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] 79c8c12e4dcf68ecf461f80e2a257bc720050ceffe5b6aec76d90076f410c19f
[INFO] running `"docker" "start" "-a" "79c8c12e4dcf68ecf461f80e2a257bc720050ceffe5b6aec76d90076f410c19f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/littlefs-fa16985755b45194
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test tests::test_lfs_truncate ... ok
[INFO] [stdout] test tests::test_lfs_tell ... ok
[INFO] [stdout] test tests::test_lfs_seek ... ok
[INFO] [stdout] test tests::test_lfs_info ... ok
[INFO] [stdout] test tests::test_mkdir ... ok
[INFO] [stdout] test tests::test_read_write_file ... ok
[INFO] [stdout] test tests::test_write_file ... ok
[INFO] [stdout] test tests::test_mount_littlefs ... ok
[INFO] [stdout] test tests::test_create_littlefs ... ok
[INFO] [stdout] test tests::test_create_file ... ok
[INFO] [stdout] test tests::test_write_big_file ... ok
[INFO] [stdout] test tests::test_erase_big_file ... ok
[INFO] [stdout] test tests::test_rename_file ... ok
[INFO] [stderr]    Doc-tests littlefs
[INFO] [stdout] test tests::test_validate_big_file ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 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" "79c8c12e4dcf68ecf461f80e2a257bc720050ceffe5b6aec76d90076f410c19f"`
[INFO] running `"docker" "rm" "-f" "79c8c12e4dcf68ecf461f80e2a257bc720050ceffe5b6aec76d90076f410c19f"`
[INFO] [stdout] 79c8c12e4dcf68ecf461f80e2a257bc720050ceffe5b6aec76d90076f410c19f