[INFO] updating cached repository koshkin-kna/rust-learn
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/koshkin-kna/rust-learn
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/koshkin-kna/rust-learn" "work/ex/beta-1.38-1/sources/1.37.0/gh/koshkin-kna/rust-learn"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/koshkin-kna/rust-learn'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/koshkin-kna/rust-learn" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/koshkin-kna/rust-learn"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/koshkin-kna/rust-learn'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1c7a0e3513e67fcc84f652742de2f10b5d159f72
[INFO] sha for GitHub repo koshkin-kna/rust-learn: 1c7a0e3513e67fcc84f652742de2f10b5d159f72
[INFO] validating manifest of koshkin-kna/rust-learn 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 koshkin-kna/rust-learn 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 koshkin-kna/rust-learn
[INFO] finished frobbing koshkin-kna/rust-learn
[INFO] frobbed toml for koshkin-kna/rust-learn written to work/ex/beta-1.38-1/sources/1.37.0/gh/koshkin-kna/rust-learn/Cargo.toml
[INFO] started frobbing koshkin-kna/rust-learn
[INFO] finished frobbing koshkin-kna/rust-learn
[INFO] frobbed toml for koshkin-kna/rust-learn written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/koshkin-kna/rust-learn/Cargo.toml
[INFO] crate koshkin-kna/rust-learn already has a lockfile, it will not be regenerated
[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 koshkin-kna/rust-learn 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-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/koshkin-kna/rust-learn:/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] 4830e779b4a7bed92e069a1ae88b7ae0091e9e634214cc6a2746bcc456277098
[INFO] running `"docker" "start" "-a" "4830e779b4a7bed92e069a1ae88b7ae0091e9e634214cc6a2746bcc456277098"`
[INFO] [stderr]    Compiling gif v0.10.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling syn v0.14.2
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]    Compiling rayon v1.0.1
[INFO] [stderr]    Compiling num-derive v0.2.2
[INFO] [stderr]    Compiling jpeg-decoder v0.1.15
[INFO] [stderr]    Compiling image v0.19.0
[INFO] [stderr]    Compiling learn v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:23:36
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn visit_dirs(dir: &Path, cb: &Fn(&DirEntry)) -> io::Result<()> {
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&DirEntry)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.81s
[INFO] running `"docker" "inspect" "4830e779b4a7bed92e069a1ae88b7ae0091e9e634214cc6a2746bcc456277098"`
[INFO] running `"docker" "rm" "-f" "4830e779b4a7bed92e069a1ae88b7ae0091e9e634214cc6a2746bcc456277098"`
[INFO] [stdout] 4830e779b4a7bed92e069a1ae88b7ae0091e9e634214cc6a2746bcc456277098
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/koshkin-kna/rust-learn:/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] b46d1af342d06d85e9d37d450d9fade2f95ba8ad0af6f61dcf8718a008fa0278
[INFO] running `"docker" "start" "-a" "b46d1af342d06d85e9d37d450d9fade2f95ba8ad0af6f61dcf8718a008fa0278"`
[INFO] [stderr]    Compiling learn v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:23:36
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn visit_dirs(dir: &Path, cb: &Fn(&DirEntry)) -> io::Result<()> {
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&DirEntry)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.01s
[INFO] running `"docker" "inspect" "b46d1af342d06d85e9d37d450d9fade2f95ba8ad0af6f61dcf8718a008fa0278"`
[INFO] running `"docker" "rm" "-f" "b46d1af342d06d85e9d37d450d9fade2f95ba8ad0af6f61dcf8718a008fa0278"`
[INFO] [stdout] b46d1af342d06d85e9d37d450d9fade2f95ba8ad0af6f61dcf8718a008fa0278
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/koshkin-kna/rust-learn:/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] f2ed19b99a94fb702e9c9e82fb1f8cbdbabd5bcdc067853252a7252bf2197b3c
[INFO] running `"docker" "start" "-a" "f2ed19b99a94fb702e9c9e82fb1f8cbdbabd5bcdc067853252a7252bf2197b3c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/learn-2c88da6941dde2ed
[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] [stderr]      Running /opt/crater/target/debug/deps/learn-c991d766184717fd
[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] [stderr]    Doc-tests learn
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - step_1::util_file (line 32) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - step_1::util_file (line 32) stdout ----
[INFO] [stdout] error[E0425]: cannot find function `util_file` in this scope
[INFO] [stdout]  --> src/lib.rs:33:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | match util_file("src/text.txt".to_string()) {
[INFO] [stdout]   |       ^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - step_1::util_file (line 32)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `"docker" "inspect" "f2ed19b99a94fb702e9c9e82fb1f8cbdbabd5bcdc067853252a7252bf2197b3c"`
[INFO] running `"docker" "rm" "-f" "f2ed19b99a94fb702e9c9e82fb1f8cbdbabd5bcdc067853252a7252bf2197b3c"`
[INFO] [stdout] f2ed19b99a94fb702e9c9e82fb1f8cbdbabd5bcdc067853252a7252bf2197b3c