[INFO] crate file_logger 0.1.0 is already in cache
[INFO] extracting crate file_logger 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/file_logger/0.1.0
[INFO] extracting crate file_logger 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/file_logger/0.1.0
[INFO] validating manifest of file_logger-0.1.0 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 file_logger-0.1.0 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 file_logger-0.1.0
[INFO] finished frobbing file_logger-0.1.0
[INFO] frobbed toml for file_logger-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/file_logger/0.1.0/Cargo.toml
[INFO] started frobbing file_logger-0.1.0
[INFO] finished frobbing file_logger-0.1.0
[INFO] frobbed toml for file_logger-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/file_logger/0.1.0/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 file_logger-0.1.0 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-3/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/file_logger/0.1.0:/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] fc265e72bbb0c0f5e6ac6d1a89929d2d4384e6f0f1e1a74916c45b56f9a2d99e
[INFO] running `"docker" "start" "-a" "fc265e72bbb0c0f5e6ac6d1a89929d2d4384e6f0f1e1a74916c45b56f9a2d99e"`
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling regex-syntax v0.3.9
[INFO] [stderr]    Compiling utf8-ranges v0.1.3
[INFO] [stderr]    Compiling nom v1.2.4
[INFO] [stderr]    Compiling toml v0.1.30
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling file_logger v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:24:32
[INFO] [stderr]    |
[INFO] [stderr] 24 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:58:32
[INFO] [stderr]    |
[INFO] [stderr] 58 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/format.rs:71:40
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn format<W: io::Write>(&self, mut w:  &mut W, record: &LogRecord, datetime: &Tm) -> Result<(), Error>{
[INFO] [stderr]    |                                        ----^
[INFO] [stderr]    |                                        |
[INFO] [stderr]    |                                        help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `OnError`
[INFO] [stderr]  --> src/main.rs:6:40
[INFO] [stderr]   |
[INFO] [stderr] 6 | use self::file_logger::{LoggerBuilder, OnError};
[INFO] [stderr]   |                                        ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `regex`
[INFO] [stderr]  --> src/main.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let regex = Regex::new("test").unwrap();
[INFO] [stderr]   |         ^^^^^ help: consider prefixing with an underscore: `_regex`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.62s
[INFO] running `"docker" "inspect" "fc265e72bbb0c0f5e6ac6d1a89929d2d4384e6f0f1e1a74916c45b56f9a2d99e"`
[INFO] running `"docker" "rm" "-f" "fc265e72bbb0c0f5e6ac6d1a89929d2d4384e6f0f1e1a74916c45b56f9a2d99e"`
[INFO] [stdout] fc265e72bbb0c0f5e6ac6d1a89929d2d4384e6f0f1e1a74916c45b56f9a2d99e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/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/file_logger/0.1.0:/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] ca99f98f24fc841919cb69ea4c9cc3db674fe91e46f27805c719455640c10233
[INFO] running `"docker" "start" "-a" "ca99f98f24fc841919cb69ea4c9cc3db674fe91e46f27805c719455640c10233"`
[INFO] [stderr]    Compiling file_logger v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `OnError`
[INFO] [stderr]  --> src/main.rs:6:40
[INFO] [stderr]   |
[INFO] [stderr] 6 | use self::file_logger::{LoggerBuilder, OnError};
[INFO] [stderr]   |                                        ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:24:32
[INFO] [stderr]    |
[INFO] [stderr] 24 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:58:32
[INFO] [stderr]    |
[INFO] [stderr] 58 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `regex`
[INFO] [stderr]  --> src/main.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let regex = Regex::new("test").unwrap();
[INFO] [stderr]   |         ^^^^^ help: consider prefixing with an underscore: `_regex`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/format.rs:71:40
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn format<W: io::Write>(&self, mut w:  &mut W, record: &LogRecord, datetime: &Tm) -> Result<(), Error>{
[INFO] [stderr]    |                                        ----^
[INFO] [stderr]    |                                        |
[INFO] [stderr]    |                                        help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.38s
[INFO] running `"docker" "inspect" "ca99f98f24fc841919cb69ea4c9cc3db674fe91e46f27805c719455640c10233"`
[INFO] running `"docker" "rm" "-f" "ca99f98f24fc841919cb69ea4c9cc3db674fe91e46f27805c719455640c10233"`
[INFO] [stdout] ca99f98f24fc841919cb69ea4c9cc3db674fe91e46f27805c719455640c10233
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/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/file_logger/0.1.0:/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] 700a36bfb93bf9a19066980ecfa6e221c98727f028f51b97831a70a58b946217
[INFO] running `"docker" "start" "-a" "700a36bfb93bf9a19066980ecfa6e221c98727f028f51b97831a70a58b946217"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/file_logger-19a282cfe8a0bffe
[INFO] [stderr]      Running /opt/crater/target/debug/deps/file_logger-2e3e897ab6e39780
[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] [stderr]    Doc-tests file_logger
[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" "700a36bfb93bf9a19066980ecfa6e221c98727f028f51b97831a70a58b946217"`
[INFO] running `"docker" "rm" "-f" "700a36bfb93bf9a19066980ecfa6e221c98727f028f51b97831a70a58b946217"`
[INFO] [stdout] 700a36bfb93bf9a19066980ecfa6e221c98727f028f51b97831a70a58b946217