[INFO] updating cached repository mattdamon108/rust_front_matter_parser
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mattdamon108/rust_front_matter_parser
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mattdamon108/rust_front_matter_parser" "work/ex/beta-1.38-1/sources/1.37.0/gh/mattdamon108/rust_front_matter_parser"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/mattdamon108/rust_front_matter_parser'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mattdamon108/rust_front_matter_parser" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mattdamon108/rust_front_matter_parser"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mattdamon108/rust_front_matter_parser'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] bfbfbf8ee288849ef306cf54c0f640b545dc3c1e
[INFO] sha for GitHub repo mattdamon108/rust_front_matter_parser: bfbfbf8ee288849ef306cf54c0f640b545dc3c1e
[INFO] validating manifest of mattdamon108/rust_front_matter_parser 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 mattdamon108/rust_front_matter_parser 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 mattdamon108/rust_front_matter_parser
[INFO] finished frobbing mattdamon108/rust_front_matter_parser
[INFO] frobbed toml for mattdamon108/rust_front_matter_parser written to work/ex/beta-1.38-1/sources/1.37.0/gh/mattdamon108/rust_front_matter_parser/Cargo.toml
[INFO] started frobbing mattdamon108/rust_front_matter_parser
[INFO] finished frobbing mattdamon108/rust_front_matter_parser
[INFO] frobbed toml for mattdamon108/rust_front_matter_parser written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mattdamon108/rust_front_matter_parser/Cargo.toml
[INFO] crate mattdamon108/rust_front_matter_parser 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 mattdamon108/rust_front_matter_parser 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-5/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/mattdamon108/rust_front_matter_parser:/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] b67ce18bc4691781b924384c14dc4d8c6dc6a8e30c40f582ada717d69d8072ba
[INFO] running `"docker" "start" "-a" "b67ce18bc4691781b924384c14dc4d8c6dc6a8e30c40f582ada717d69d8072ba"`
[INFO] [stderr]    Compiling mdfmp v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:53:46
[INFO] [stderr]    |
[INFO] [stderr] 53 | pub fn run(config: Config) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                              ^^^^^ help: use `dyn`: `dyn 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/lib.rs:136:74
[INFO] [stderr]     |
[INFO] [stderr] 136 | pub fn create_write(config: Config, content: &mut str) -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                                                          ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.95s
[INFO] running `"docker" "inspect" "b67ce18bc4691781b924384c14dc4d8c6dc6a8e30c40f582ada717d69d8072ba"`
[INFO] running `"docker" "rm" "-f" "b67ce18bc4691781b924384c14dc4d8c6dc6a8e30c40f582ada717d69d8072ba"`
[INFO] [stdout] b67ce18bc4691781b924384c14dc4d8c6dc6a8e30c40f582ada717d69d8072ba
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/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/mattdamon108/rust_front_matter_parser:/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] c25faf60fbf2b7fd0f234a73c562b6a984acde0ecf50852ac3590213ae13b184
[INFO] running `"docker" "start" "-a" "c25faf60fbf2b7fd0f234a73c562b6a984acde0ecf50852ac3590213ae13b184"`
[INFO] [stderr]    Compiling mdfmp v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:53:46
[INFO] [stderr]    |
[INFO] [stderr] 53 | pub fn run(config: Config) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                              ^^^^^ help: use `dyn`: `dyn 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/lib.rs:136:74
[INFO] [stderr]     |
[INFO] [stderr] 136 | pub fn create_write(config: Config, content: &mut str) -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                                                          ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.80s
[INFO] running `"docker" "inspect" "c25faf60fbf2b7fd0f234a73c562b6a984acde0ecf50852ac3590213ae13b184"`
[INFO] running `"docker" "rm" "-f" "c25faf60fbf2b7fd0f234a73c562b6a984acde0ecf50852ac3590213ae13b184"`
[INFO] [stdout] c25faf60fbf2b7fd0f234a73c562b6a984acde0ecf50852ac3590213ae13b184
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/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/mattdamon108/rust_front_matter_parser:/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] dae6696c4df5243204c830f360337f081e6e514b418a6e62d3b157c59ee6823e
[INFO] running `"docker" "start" "-a" "dae6696c4df5243204c830f360337f081e6e514b418a6e62d3b157c59ee6823e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mdfmp-a82adce8195311aa
[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/mdfmp-f2ab831bef4d27e9
[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 mdfmp
[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" "dae6696c4df5243204c830f360337f081e6e514b418a6e62d3b157c59ee6823e"`
[INFO] running `"docker" "rm" "-f" "dae6696c4df5243204c830f360337f081e6e514b418a6e62d3b157c59ee6823e"`
[INFO] [stdout] dae6696c4df5243204c830f360337f081e6e514b418a6e62d3b157c59ee6823e