[INFO] updating cached repository https://github.com/mkomitee/wc.rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d141da8ee1854a31e6b294940e7a5fdf8946bf74
[INFO] testing mkomitee/wc.rs against 1.45.2 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmkomitee%2Fwc.rs" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mkomitee/wc.rs on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mkomitee/wc.rs
[INFO] finished tweaking git repo https://github.com/mkomitee/wc.rs
[INFO] tweaked toml for git repo https://github.com/mkomitee/wc.rs written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/mkomitee/wc.rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-3/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b5acf6650db5447e5a8040a5a8c591a804ad30055342226bd46cd370d9210b79
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b5acf6650db5447e5a8040a5a8c591a804ad30055342226bd46cd370d9210b79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b5acf6650db5447e5a8040a5a8c591a804ad30055342226bd46cd370d9210b79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5acf6650db5447e5a8040a5a8c591a804ad30055342226bd46cd370d9210b79", kill_on_drop: false }`
[INFO] [stdout] b5acf6650db5447e5a8040a5a8c591a804ad30055342226bd46cd370d9210b79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 27c3b4efd1ec2db3dacf65f0a66c08638209334b5c9aec922bb96d015649ea49
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "27c3b4efd1ec2db3dacf65f0a66c08638209334b5c9aec922bb96d015649ea49", kill_on_drop: false }`
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling docopt v1.1.0
[INFO] [stderr]    Compiling wc v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:201:41
[INFO] [stdout]     |
[INFO] [stdout] 201 |         _ => Ok(Box::new(BufReader::new(try!(File::open(filename))))),
[INFO] [stdout]     |                                         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:206:20
[INFO] [stdout]     |
[INFO] [stdout] 206 |     let mut file = try!(open_file(filename));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:210:20
[INFO] [stdout]     |
[INFO] [stdout] 210 |         let size = try!(file.read_until(LF as u8, &mut lbuf));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:222:28
[INFO] [stdout]     |
[INFO] [stdout] 222 |                 let line = try!(from_utf8(&lbuf));
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:262:20
[INFO] [stdout]     |
[INFO] [stdout] 262 |     let mut file = try!(open_file(filename));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:266:20
[INFO] [stdout]     |
[INFO] [stdout] 266 |         let size = try!(file.read_until(NULL as u8, &mut lbuf));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:273:24
[INFO] [stdout]     |
[INFO] [stdout] 273 |             let line = try!(from_utf8(&lbuf));
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:108:32
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn cause(&self) -> Option<&std::error::Error> {
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:198:46
[INFO] [stdout]     |
[INFO] [stdout] 198 | fn open_file(filename: &str) -> WCResult<Box<BufRead>> {
[INFO] [stdout]     |                                              ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:103:37
[INFO] [stdout]     |
[INFO] [stdout] 103 |             WCError::IO(ref e) => e.description(),
[INFO] [stdout]     |                                     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:104:39
[INFO] [stdout]     |
[INFO] [stdout] 104 |             WCError::Utf8(ref e) => e.description()
[INFO] [stdout]     |                                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stdout]    --> src/main.rs:110:37
[INFO] [stdout]     |
[INFO] [stdout] 110 |             WCError::IO(ref e) => e.cause(),
[INFO] [stdout]     |                                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stdout]    --> src/main.rs:111:39
[INFO] [stdout]     |
[INFO] [stdout] 111 |             WCError::Utf8(ref e) => e.cause()
[INFO] [stdout]     |                                       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'core::str::<impl str>::trim_right_matches': superseded by `trim_end_matches`
[INFO] [stdout]    --> src/main.rs:274:30
[INFO] [stdout]     |
[INFO] [stdout] 274 |             result.push(line.trim_right_matches(NULL).to_string());
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated item: `trim_end_matches`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `decode` found for struct `docopt::Docopt` in the current scope
[INFO] [stdout]    --> src/main.rs:283:25
[INFO] [stdout]     |
[INFO] [stdout] 283 |         .and_then(|d| d.decode())
[INFO] [stdout]     |                         ^^^^^^ method not found in `docopt::Docopt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]   --> src/main.rs:12:31
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::io::{Write, BufRead, Read};
[INFO] [stdout]    |                               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `wc`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "27c3b4efd1ec2db3dacf65f0a66c08638209334b5c9aec922bb96d015649ea49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27c3b4efd1ec2db3dacf65f0a66c08638209334b5c9aec922bb96d015649ea49", kill_on_drop: false }`
[INFO] [stdout] 27c3b4efd1ec2db3dacf65f0a66c08638209334b5c9aec922bb96d015649ea49