[INFO] updating cached repository msekletar/net-ifnames-prefix
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/msekletar/net-ifnames-prefix
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/msekletar/net-ifnames-prefix" "work/ex/beta-1.37-6/sources/1.36.0/gh/msekletar/net-ifnames-prefix"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/msekletar/net-ifnames-prefix'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/msekletar/net-ifnames-prefix" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/msekletar/net-ifnames-prefix"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/msekletar/net-ifnames-prefix'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 57f075d9df0cd4ea1b39003044e6e36c7f6dfbfe
[INFO] sha for GitHub repo msekletar/net-ifnames-prefix: 57f075d9df0cd4ea1b39003044e6e36c7f6dfbfe
[INFO] validating manifest of msekletar/net-ifnames-prefix on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of msekletar/net-ifnames-prefix on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing msekletar/net-ifnames-prefix
[INFO] finished frobbing msekletar/net-ifnames-prefix
[INFO] frobbed toml for msekletar/net-ifnames-prefix written to work/ex/beta-1.37-6/sources/1.36.0/gh/msekletar/net-ifnames-prefix/Cargo.toml
[INFO] started frobbing msekletar/net-ifnames-prefix
[INFO] finished frobbing msekletar/net-ifnames-prefix
[INFO] frobbed toml for msekletar/net-ifnames-prefix written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/msekletar/net-ifnames-prefix/Cargo.toml
[INFO] crate msekletar/net-ifnames-prefix already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing msekletar/net-ifnames-prefix against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/msekletar/net-ifnames-prefix:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] ac8cc5a02248505e15cfd1e62e24c3ce99a45418ad0a6b4d0dcfbd7a82c9adfd
[INFO] running `"docker" "start" "-a" "ac8cc5a02248505e15cfd1e62e24c3ce99a45418ad0a6b4d0dcfbd7a82c9adfd"`
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling openssl-sys v0.9.32
[INFO] [stderr]    Compiling log v0.4.3
[INFO] [stderr]    Compiling phf v0.7.22
[INFO] [stderr]    Compiling serde_json v1.0.19
[INFO] [stderr]    Compiling regex v1.0.1
[INFO] [stderr]    Compiling serde_urlencoded v0.5.2
[INFO] [stderr]    Compiling phf_codegen v0.7.22
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling libudev v0.2.0
[INFO] [stderr]    Compiling openssl v0.9.24
[INFO] [stderr]    Compiling hyper v0.10.13
[INFO] [stderr]    Compiling env_logger v0.5.10
[INFO] [stderr]    Compiling native-tls v0.1.5
[INFO] [stderr]    Compiling hyper-native-tls v0.2.4
[INFO] [stderr]    Compiling reqwest v0.6.2
[INFO] [stderr]    Compiling hwaddr v0.1.4
[INFO] [stderr]    Compiling net-ifnames-prefix v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/config.rs:27:70
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub fn new<T: ToString>(link_name: &T) -> Result<LinkConfig, 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/config.rs:36:99
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn new_with_hwaddr<T: ToString>(link_name: &T, hwaddr: &HwAddr) -> Result<LinkConfig, Box<Error>> {
[INFO] [stderr]    |                                                                                                   ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/config.rs:45:61
[INFO] [stderr]    |
[INFO] [stderr] 45 |     pub fn hwaddr_from_event_device() -> Result<HwAddr, Box<Error>> {
[INFO] [stderr]    |                                                             ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/config.rs:66:53
[INFO] [stderr]    |
[INFO] [stderr] 66 |     pub fn write_link_file(&self) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                     ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/config.rs:105:46
[INFO] [stderr]     |
[INFO] [stderr] 105 |     pub fn load(&mut self) -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/config.rs:124:56
[INFO] [stderr]     |
[INFO] [stderr] 124 |     pub fn next_link_name(&self) -> Result<String, Box<Error>> {
[INFO] [stderr]     |                                                        ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/config.rs:135:89
[INFO] [stderr]     |
[INFO] [stderr] 135 |     fn match_ethernet_links(udev_enumerate: &mut libudev::Enumerator) -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                                                                         ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/config.rs:142:63
[INFO] [stderr]     |
[INFO] [stderr] 142 |     fn enumerate_links_from_udev(&mut self) -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                                               ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/config.rs:164:64
[INFO] [stderr]     |
[INFO] [stderr] 164 |     fn enumerate_links_from_files(&mut self) -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/sema.rs:13:63
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn new_with_name(name: &str) -> Result<Semaphore, Box<Error>> {
[INFO] [stderr]    |                                                               ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:23:59
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn get_prefix_from_file(path: &str) -> Result<String, Box<Error>> {
[INFO] [stderr]    |                                                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left_matches': superseded by `trim_start_matches`
[INFO] [stderr]    --> src/config.rs:130:36
[INFO] [stderr]     |
[INFO] [stderr] 130 |         let last_index = last.name.trim_left_matches(&self.ifname_prefix).parse::<u64>()?;
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated item: `trim_start_matches`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.99s
[INFO] running `"docker" "inspect" "ac8cc5a02248505e15cfd1e62e24c3ce99a45418ad0a6b4d0dcfbd7a82c9adfd"`
[INFO] running `"docker" "rm" "-f" "ac8cc5a02248505e15cfd1e62e24c3ce99a45418ad0a6b4d0dcfbd7a82c9adfd"`
[INFO] [stdout] ac8cc5a02248505e15cfd1e62e24c3ce99a45418ad0a6b4d0dcfbd7a82c9adfd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/msekletar/net-ifnames-prefix:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 041c31364cb9a4514c09223221af02afc618d5adc66bd179b75efc513c6ddcd5
[INFO] running `"docker" "start" "-a" "041c31364cb9a4514c09223221af02afc618d5adc66bd179b75efc513c6ddcd5"`
[INFO] [stderr]    Compiling net-ifnames-prefix v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/config.rs:27:70
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub fn new<T: ToString>(link_name: &T) -> Result<LinkConfig, 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/config.rs:36:99
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn new_with_hwaddr<T: ToString>(link_name: &T, hwaddr: &HwAddr) -> Result<LinkConfig, Box<Error>> {
[INFO] [stderr]    |                                                                                                   ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/config.rs:45:61
[INFO] [stderr]    |
[INFO] [stderr] 45 |     pub fn hwaddr_from_event_device() -> Result<HwAddr, Box<Error>> {
[INFO] [stderr]    |                                                             ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/config.rs:66:53
[INFO] [stderr]    |
[INFO] [stderr] 66 |     pub fn write_link_file(&self) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                     ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/config.rs:105:46
[INFO] [stderr]     |
[INFO] [stderr] 105 |     pub fn load(&mut self) -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/config.rs:124:56
[INFO] [stderr]     |
[INFO] [stderr] 124 |     pub fn next_link_name(&self) -> Result<String, Box<Error>> {
[INFO] [stderr]     |                                                        ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/config.rs:135:89
[INFO] [stderr]     |
[INFO] [stderr] 135 |     fn match_ethernet_links(udev_enumerate: &mut libudev::Enumerator) -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                                                                         ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/config.rs:142:63
[INFO] [stderr]     |
[INFO] [stderr] 142 |     fn enumerate_links_from_udev(&mut self) -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                                               ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/config.rs:164:64
[INFO] [stderr]     |
[INFO] [stderr] 164 |     fn enumerate_links_from_files(&mut self) -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/sema.rs:13:63
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn new_with_name(name: &str) -> Result<Semaphore, Box<Error>> {
[INFO] [stderr]    |                                                               ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:23:59
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn get_prefix_from_file(path: &str) -> Result<String, Box<Error>> {
[INFO] [stderr]    |                                                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left_matches': superseded by `trim_start_matches`
[INFO] [stderr]    --> src/config.rs:130:36
[INFO] [stderr]     |
[INFO] [stderr] 130 |         let last_index = last.name.trim_left_matches(&self.ifname_prefix).parse::<u64>()?;
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated item: `trim_start_matches`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `"docker" "inspect" "041c31364cb9a4514c09223221af02afc618d5adc66bd179b75efc513c6ddcd5"`
[INFO] running `"docker" "rm" "-f" "041c31364cb9a4514c09223221af02afc618d5adc66bd179b75efc513c6ddcd5"`
[INFO] [stdout] 041c31364cb9a4514c09223221af02afc618d5adc66bd179b75efc513c6ddcd5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/msekletar/net-ifnames-prefix:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] dec62cf9e9f3c3b23e29c0976583bc2366bc3a1e152ad37d7fc5bdca408268a7
[INFO] running `"docker" "start" "-a" "dec62cf9e9f3c3b23e29c0976583bc2366bc3a1e152ad37d7fc5bdca408268a7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/net_ifnames_prefix-e2547ed7a1962bb3
[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" "dec62cf9e9f3c3b23e29c0976583bc2366bc3a1e152ad37d7fc5bdca408268a7"`
[INFO] running `"docker" "rm" "-f" "dec62cf9e9f3c3b23e29c0976583bc2366bc3a1e152ad37d7fc5bdca408268a7"`
[INFO] [stdout] dec62cf9e9f3c3b23e29c0976583bc2366bc3a1e152ad37d7fc5bdca408268a7