[INFO] updating cached repository iamcodemaker/rust-wc
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/iamcodemaker/rust-wc
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/iamcodemaker/rust-wc" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/iamcodemaker/rust-wc"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/iamcodemaker/rust-wc'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/iamcodemaker/rust-wc" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/iamcodemaker/rust-wc"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/iamcodemaker/rust-wc'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a52c47ba2326da5e718e56fef31de5ec70ed4497
[INFO] sha for GitHub repo iamcodemaker/rust-wc: a52c47ba2326da5e718e56fef31de5ec70ed4497
[INFO] validating manifest of iamcodemaker/rust-wc on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of iamcodemaker/rust-wc on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing iamcodemaker/rust-wc
[INFO] finished frobbing iamcodemaker/rust-wc
[INFO] frobbed toml for iamcodemaker/rust-wc written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/iamcodemaker/rust-wc/Cargo.toml
[INFO] started frobbing iamcodemaker/rust-wc
[INFO] finished frobbing iamcodemaker/rust-wc
[INFO] frobbed toml for iamcodemaker/rust-wc written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/iamcodemaker/rust-wc/Cargo.toml
[INFO] crate iamcodemaker/rust-wc already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/iamcodemaker/rust-wc/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking iamcodemaker/rust-wc against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-7/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/iamcodemaker/rust-wc:/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=forbid" "-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" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 878e36b51b4104091764336b85fd3626d1c6958cd34e76c829bae22a87f78735
[INFO] running `"docker" "start" "-a" "878e36b51b4104091764336b85fd3626d1c6958cd34e76c829bae22a87f78735"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking rust-wc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/counter/count.rs:31:61
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn bytes_from_file(file: &str) -> Result<Count, 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/counter/count.rs:43:61
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub fn lines_from_file(file: &str) -> Result<Count, 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/counter/count.rs:71:55
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn from_file(file: &str) -> Result<Count, 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/counter/count.rs:77:46
[INFO] [stderr]    |
[INFO] [stderr] 77 |     pub fn from_stdin() -> Result<Count, 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/counter/count.rs:88:52
[INFO] [stderr]    |
[INFO] [stderr] 88 |     fn from_iter<I>(bytes: I) -> Result<Count, 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/counter/count.rs:31:61
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn bytes_from_file(file: &str) -> Result<Count, 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/counter/count.rs:43:61
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub fn lines_from_file(file: &str) -> Result<Count, 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/counter/count.rs:71:55
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn from_file(file: &str) -> Result<Count, 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/counter/count.rs:77:46
[INFO] [stderr]    |
[INFO] [stderr] 77 |     pub fn from_stdin() -> Result<Count, 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/counter/count.rs:88:52
[INFO] [stderr]    |
[INFO] [stderr] 88 |     fn from_iter<I>(bytes: I) -> Result<Count, 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:51:26
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn print_count(out: &mut Write, opts: &Options, file: &str, count_result: &Result<Count, Box<Error>>) {
[INFO] [stderr]    |                          ^^^^^ help: use `dyn`: `dyn Write`
[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/main.rs:51:94
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn print_count(out: &mut Write, opts: &Options, file: &str, count_result: &Result<Count, 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:64:66
[INFO] [stderr]    |
[INFO] [stderr] 64 | fn process_file(opts: &Options, file: &str) -> Result<Count, 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:51:26
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn print_count(out: &mut Write, opts: &Options, file: &str, count_result: &Result<Count, Box<Error>>) {
[INFO] [stderr]    |                          ^^^^^ help: use `dyn`: `dyn Write`
[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/main.rs:51:94
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn print_count(out: &mut Write, opts: &Options, file: &str, count_result: &Result<Count, 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:64:66
[INFO] [stderr]    |
[INFO] [stderr] 64 | fn process_file(opts: &Options, file: &str) -> Result<Count, Box<Error>> {
[INFO] [stderr]    |                                                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.84s
[INFO] running `"docker" "inspect" "878e36b51b4104091764336b85fd3626d1c6958cd34e76c829bae22a87f78735"`
[INFO] running `"docker" "rm" "-f" "878e36b51b4104091764336b85fd3626d1c6958cd34e76c829bae22a87f78735"`
[INFO] [stdout] 878e36b51b4104091764336b85fd3626d1c6958cd34e76c829bae22a87f78735