[INFO] cloning repository https://github.com/dwrensha/shortmantout
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dwrensha/shortmantout" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdwrensha%2Fshortmantout", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdwrensha%2Fshortmantout'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 07abf67c67baa3927206cd10cb146126a675ae63
[INFO] testing dwrensha/shortmantout against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdwrensha%2Fshortmantout" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dwrensha/shortmantout on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dwrensha/shortmantout
[INFO] finished tweaking git repo https://github.com/dwrensha/shortmantout
[INFO] tweaked toml for git repo https://github.com/dwrensha/shortmantout written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/dwrensha/shortmantout already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eeb9c107b78750f844cccc7a2481b2149272838ab6723065fec2f8550ec4c0e3
[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" "eeb9c107b78750f844cccc7a2481b2149272838ab6723065fec2f8550ec4c0e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eeb9c107b78750f844cccc7a2481b2149272838ab6723065fec2f8550ec4c0e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eeb9c107b78750f844cccc7a2481b2149272838ab6723065fec2f8550ec4c0e3", kill_on_drop: false }`
[INFO] [stdout] eeb9c107b78750f844cccc7a2481b2149272838ab6723065fec2f8550ec4c0e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5f04432637475cee5347f8e166e1e6897033a1e1977d683a3a8f6bb32f1c816a
[INFO] running `Command { std: "docker" "start" "-a" "5f04432637475cee5347f8e166e1e6897033a1e1977d683a3a8f6bb32f1c816a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling nibble_vec v0.0.3
[INFO] [stderr]    Compiling libc v0.2.7
[INFO] [stderr]    Compiling radix_trie v0.0.8
[INFO] [stderr]    Compiling rand v0.3.14
[INFO] [stderr]    Compiling carrycoat v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lower_bound.rs:29:49
[INFO] [stdout]    |
[INFO] [stdout] 29 |     for maybe_word in ::std::io::BufReader::new(try!(::std::fs::File::open(&args[1]))).split('\n' as u8) {
[INFO] [stdout]    |                                                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lower_bound.rs:30:20
[INFO] [stdout]    |
[INFO] [stdout] 30 |         let word = try!(maybe_word);
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:105:53
[INFO] [stdout]     |
[INFO] [stdout] 105 |         for maybe_word in ::std::io::BufReader::new(try!(::std::fs::File::open(path))).split('\n' as u8) {
[INFO] [stdout]     |                                                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:106:24
[INFO] [stdout]     |
[INFO] [stdout] 106 |             let word = try!(maybe_word);
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout] 123 |         try!(try!(::std::fs::File::open(path)).read_to_end(&mut portmantout));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:123:14
[INFO] [stdout]     |
[INFO] [stdout] 123 |         try!(try!(::std::fs::File::open(path)).read_to_end(&mut portmantout));
[INFO] [stdout]     |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:352:20
[INFO] [stdout]     |
[INFO] [stdout] 352 |     let mut file = try!(::std::fs::File::create(&filename));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:367:25
[INFO] [stdout]     |
[INFO] [stdout] 367 |                         try!(file.write_all(&particle.chars));
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:368:25
[INFO] [stdout]     |
[INFO] [stdout] 368 |                         try!(file.write_all(padding));
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:374:25
[INFO] [stdout]     |
[INFO] [stdout] 374 |                         try!(file.write_all(&particle.chars[.. write_len]));
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:381:17
[INFO] [stdout]     |
[INFO] [stdout] 381 |                 try!(file.write_all(&particle.chars));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/search.rs:470:5
[INFO] [stdout]     |
[INFO] [stdout] 470 |     'outer: while particles_trie.len() > 0 {
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:619:5
[INFO] [stdout]     |
[INFO] [stdout] 619 |     try!(write_portmantout(&state));
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:581:21
[INFO] [stdout]     |
[INFO] [stdout] 581 |     let mut state = try!(State::from_particle_file(&args[1]));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:584:9
[INFO] [stdout]     |
[INFO] [stdout] 584 |         try!(state.resume(&args[4]));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:592:51
[INFO] [stdout]     |
[INFO] [stdout] 592 |     for maybe_joiner in ::std::io::BufReader::new(try!(::std::fs::File::open(&args[2]))).split('\n' as u8) {
[INFO] [stdout]     |                                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:593:22
[INFO] [stdout]     |
[INFO] [stdout] 593 |         let joiner = try!(maybe_joiner);
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:601:49
[INFO] [stdout]     |
[INFO] [stdout] 601 |     for maybe_word in ::std::io::BufReader::new(try!(::std::fs::File::open(&args[3]))).split('\n' as u8) {
[INFO] [stdout]     |                                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:602:20
[INFO] [stdout]     |
[INFO] [stdout] 602 |         let word = try!(maybe_word);
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:609:23
[INFO] [stdout]     |
[INFO] [stdout] 609 |     let mut urandom = try!(::std::fs::File::open("/dev/urandom"));
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:612:21
[INFO] [stdout]     |
[INFO] [stdout] 612 |         seed[idx] = try!(urandom.read_u32::<LittleEndian>());
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:631:13
[INFO] [stdout]     |
[INFO] [stdout] 631 |             try!(write_portmantout(&state));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:636:17
[INFO] [stdout]     |
[INFO] [stdout] 636 |                 try!(::std::io::stdout().flush());
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lower_bound.rs:19:51
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn main_result() -> ::std::result::Result<(), Box<::std::error::Error>> {
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn main_result() -> ::std::result::Result<(), Box<dyn (::std::error::Error)>> {
[INFO] [stdout]    |                                                   +++++                   +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/search.rs:572:51
[INFO] [stdout]     |
[INFO] [stdout] 572 | fn main_result() -> ::std::result::Result<(), Box<::std::error::Error>> {
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 572 | fn main_result() -> ::std::result::Result<(), Box<dyn (::std::error::Error)>> {
[INFO] [stdout]     |                                                   +++++                   +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/verify.rs:138:5
[INFO] [stdout]     |
[INFO] [stdout] 138 |     try!(try!(::std::fs::File::open(&args[1])).read_to_end(&mut portmantout));
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/verify.rs:138:10
[INFO] [stdout]     |
[INFO] [stdout] 138 |     try!(try!(::std::fs::File::open(&args[1])).read_to_end(&mut portmantout));
[INFO] [stdout]     |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/verify.rs:148:49
[INFO] [stdout]     |
[INFO] [stdout] 148 |     for maybe_word in ::std::io::BufReader::new(try!(::std::fs::File::open(&args[2]))).split('\n' as u8) {
[INFO] [stdout]     |                                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/verify.rs:149:35
[INFO] [stdout]     |
[INFO] [stdout] 149 |         words.insert(BytesTrieKey(try!(maybe_word)), ());
[INFO] [stdout]     |                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/verify.rs:164:49
[INFO] [stdout]     |
[INFO] [stdout] 164 |     for maybe_word in ::std::io::BufReader::new(try!(::std::fs::File::open(&args[3]))).split('\n' as u8) {
[INFO] [stdout]     |                                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/verify.rs:165:28
[INFO] [stdout]     |
[INFO] [stdout] 165 |         reduced_words.push(try!(maybe_word));
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/verify.rs:128:51
[INFO] [stdout]     |
[INFO] [stdout] 128 | fn main_result() -> ::std::result::Result<(), Box<::std::error::Error>> {
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 128 | fn main_result() -> ::std::result::Result<(), Box<dyn (::std::error::Error)>> {
[INFO] [stdout]     |                                                   +++++                   +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/join.rs:27:49
[INFO] [stdout]    |
[INFO] [stdout] 27 |     for maybe_word in ::std::io::BufReader::new(try!(::std::fs::File::open(&args[1]))).split('\n' as u8) {
[INFO] [stdout]    |                                                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/join.rs:28:20
[INFO] [stdout]    |
[INFO] [stdout] 28 |         let word = try!(maybe_word);
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/join.rs:36:51
[INFO] [stdout]    |
[INFO] [stdout] 36 |     for maybe_joiner in ::std::io::BufReader::new(try!(::std::fs::File::open(&args[2]))).split('\n' as u8) {
[INFO] [stdout]    |                                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/join.rs:37:22
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let joiner = try!(maybe_joiner);
[INFO] [stdout]    |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/join.rs:45:49
[INFO] [stdout]    |
[INFO] [stdout] 45 |     for maybe_word in ::std::io::BufReader::new(try!(::std::fs::File::open(&args[3]))).split('\n' as u8) {
[INFO] [stdout]    |                                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/join.rs:46:20
[INFO] [stdout]    |
[INFO] [stdout] 46 |         let word = try!(maybe_word);
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> src/join.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 68 |     'outer: while particles_trie.len() > 0 {
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/join.rs:16:51
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn main_result() -> ::std::result::Result<(), Box<::std::error::Error>> {
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn main_result() -> ::std::result::Result<(), Box<dyn (::std::error::Error)>> {
[INFO] [stdout]    |                                                   +++++                   +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/generate.rs:27:49
[INFO] [stdout]    |
[INFO] [stdout] 27 |     for maybe_word in ::std::io::BufReader::new(try!(::std::fs::File::open(&args[1]))).split('\n' as u8) {
[INFO] [stdout]    |                                                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/generate.rs:28:20
[INFO] [stdout]    |
[INFO] [stdout] 28 |         let word = try!(maybe_word);
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/generate.rs:16:51
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn main_result() -> ::std::result::Result<(), Box<::std::error::Error>> {
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn main_result() -> ::std::result::Result<(), Box<dyn (::std::error::Error)>> {
[INFO] [stdout]    |                                                   +++++                   +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `prev_idx`
[INFO] [stdout]   --> src/search.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 49 |     prev_idx: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Prev` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/search.rs:47:10
[INFO] [stdout]    |
[INFO] [stdout] 47 | #[derive(Clone)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.53s
[INFO] running `Command { std: "docker" "inspect" "5f04432637475cee5347f8e166e1e6897033a1e1977d683a3a8f6bb32f1c816a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f04432637475cee5347f8e166e1e6897033a1e1977d683a3a8f6bb32f1c816a", kill_on_drop: false }`
[INFO] [stdout] 5f04432637475cee5347f8e166e1e6897033a1e1977d683a3a8f6bb32f1c816a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7b9849581fd967be7e4cb881005bd72ab31a31a3c1277ca792429e5135199e51
[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" "7b9849581fd967be7e4cb881005bd72ab31a31a3c1277ca792429e5135199e51", kill_on_drop: false }`
[INFO] [stderr]    Compiling carrycoat v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/join.rs:27:49
[INFO] [stdout]    |
[INFO] [stdout] 27 |     for maybe_word in ::std::io::BufReader::new(try!(::std::fs::File::open(&args[1]))).split('\n' as u8) {
[INFO] [stdout]    |                                                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/join.rs:28:20
[INFO] [stdout]    |
[INFO] [stdout] 28 |         let word = try!(maybe_word);
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/join.rs:36:51
[INFO] [stdout]    |
[INFO] [stdout] 36 |     for maybe_joiner in ::std::io::BufReader::new(try!(::std::fs::File::open(&args[2]))).split('\n' as u8) {
[INFO] [stdout]    |                                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/join.rs:37:22
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let joiner = try!(maybe_joiner);
[INFO] [stdout]    |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/join.rs:45:49
[INFO] [stdout]    |
[INFO] [stdout] 45 |     for maybe_word in ::std::io::BufReader::new(try!(::std::fs::File::open(&args[3]))).split('\n' as u8) {
[INFO] [stdout]    |                                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/join.rs:46:20
[INFO] [stdout]    |
[INFO] [stdout] 46 |         let word = try!(maybe_word);
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> src/join.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 68 |     'outer: while particles_trie.len() > 0 {
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/join.rs:16:51
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn main_result() -> ::std::result::Result<(), Box<::std::error::Error>> {
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn main_result() -> ::std::result::Result<(), Box<dyn (::std::error::Error)>> {
[INFO] [stdout]    |                                                   +++++                   +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/verify.rs:138:5
[INFO] [stdout]     |
[INFO] [stdout] 138 |     try!(try!(::std::fs::File::open(&args[1])).read_to_end(&mut portmantout));
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/verify.rs:138:10
[INFO] [stdout]     |
[INFO] [stdout] 138 |     try!(try!(::std::fs::File::open(&args[1])).read_to_end(&mut portmantout));
[INFO] [stdout]     |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/verify.rs:148:49
[INFO] [stdout]     |
[INFO] [stdout] 148 |     for maybe_word in ::std::io::BufReader::new(try!(::std::fs::File::open(&args[2]))).split('\n' as u8) {
[INFO] [stdout]     |                                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/verify.rs:149:35
[INFO] [stdout]     |
[INFO] [stdout] 149 |         words.insert(BytesTrieKey(try!(maybe_word)), ());
[INFO] [stdout]     |                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/verify.rs:164:49
[INFO] [stdout]     |
[INFO] [stdout] 164 |     for maybe_word in ::std::io::BufReader::new(try!(::std::fs::File::open(&args[3]))).split('\n' as u8) {
[INFO] [stdout]     |                                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/verify.rs:165:28
[INFO] [stdout]     |
[INFO] [stdout] 165 |         reduced_words.push(try!(maybe_word));
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/verify.rs:128:51
[INFO] [stdout]     |
[INFO] [stdout] 128 | fn main_result() -> ::std::result::Result<(), Box<::std::error::Error>> {
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 128 | fn main_result() -> ::std::result::Result<(), Box<dyn (::std::error::Error)>> {
[INFO] [stdout]     |                                                   +++++                   +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/generate.rs:27:49
[INFO] [stdout]    |
[INFO] [stdout] 27 |     for maybe_word in ::std::io::BufReader::new(try!(::std::fs::File::open(&args[1]))).split('\n' as u8) {
[INFO] [stdout]    |                                                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/generate.rs:28:20
[INFO] [stdout]    |
[INFO] [stdout] 28 |         let word = try!(maybe_word);
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/generate.rs:16:51
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn main_result() -> ::std::result::Result<(), Box<::std::error::Error>> {
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn main_result() -> ::std::result::Result<(), Box<dyn (::std::error::Error)>> {
[INFO] [stdout]    |                                                   +++++                   +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lower_bound.rs:29:49
[INFO] [stdout]    |
[INFO] [stdout] 29 |     for maybe_word in ::std::io::BufReader::new(try!(::std::fs::File::open(&args[1]))).split('\n' as u8) {
[INFO] [stdout]    |                                                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lower_bound.rs:30:20
[INFO] [stdout]    |
[INFO] [stdout] 30 |         let word = try!(maybe_word);
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lower_bound.rs:19:51
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn main_result() -> ::std::result::Result<(), Box<::std::error::Error>> {
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn main_result() -> ::std::result::Result<(), Box<dyn (::std::error::Error)>> {
[INFO] [stdout]    |                                                   +++++                   +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:105:53
[INFO] [stdout]     |
[INFO] [stdout] 105 |         for maybe_word in ::std::io::BufReader::new(try!(::std::fs::File::open(path))).split('\n' as u8) {
[INFO] [stdout]     |                                                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:106:24
[INFO] [stdout]     |
[INFO] [stdout] 106 |             let word = try!(maybe_word);
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout] 123 |         try!(try!(::std::fs::File::open(path)).read_to_end(&mut portmantout));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:123:14
[INFO] [stdout]     |
[INFO] [stdout] 123 |         try!(try!(::std::fs::File::open(path)).read_to_end(&mut portmantout));
[INFO] [stdout]     |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:352:20
[INFO] [stdout]     |
[INFO] [stdout] 352 |     let mut file = try!(::std::fs::File::create(&filename));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:367:25
[INFO] [stdout]     |
[INFO] [stdout] 367 |                         try!(file.write_all(&particle.chars));
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:368:25
[INFO] [stdout]     |
[INFO] [stdout] 368 |                         try!(file.write_all(padding));
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:374:25
[INFO] [stdout]     |
[INFO] [stdout] 374 |                         try!(file.write_all(&particle.chars[.. write_len]));
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:381:17
[INFO] [stdout]     |
[INFO] [stdout] 381 |                 try!(file.write_all(&particle.chars));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/search.rs:470:5
[INFO] [stdout]     |
[INFO] [stdout] 470 |     'outer: while particles_trie.len() > 0 {
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:619:5
[INFO] [stdout]     |
[INFO] [stdout] 619 |     try!(write_portmantout(&state));
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:581:21
[INFO] [stdout]     |
[INFO] [stdout] 581 |     let mut state = try!(State::from_particle_file(&args[1]));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:584:9
[INFO] [stdout]     |
[INFO] [stdout] 584 |         try!(state.resume(&args[4]));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:592:51
[INFO] [stdout]     |
[INFO] [stdout] 592 |     for maybe_joiner in ::std::io::BufReader::new(try!(::std::fs::File::open(&args[2]))).split('\n' as u8) {
[INFO] [stdout]     |                                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:593:22
[INFO] [stdout]     |
[INFO] [stdout] 593 |         let joiner = try!(maybe_joiner);
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:601:49
[INFO] [stdout]     |
[INFO] [stdout] 601 |     for maybe_word in ::std::io::BufReader::new(try!(::std::fs::File::open(&args[3]))).split('\n' as u8) {
[INFO] [stdout]     |                                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:602:20
[INFO] [stdout]     |
[INFO] [stdout] 602 |         let word = try!(maybe_word);
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:609:23
[INFO] [stdout]     |
[INFO] [stdout] 609 |     let mut urandom = try!(::std::fs::File::open("/dev/urandom"));
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:612:21
[INFO] [stdout]     |
[INFO] [stdout] 612 |         seed[idx] = try!(urandom.read_u32::<LittleEndian>());
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:631:13
[INFO] [stdout]     |
[INFO] [stdout] 631 |             try!(write_portmantout(&state));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/search.rs:636:17
[INFO] [stdout]     |
[INFO] [stdout] 636 |                 try!(::std::io::stdout().flush());
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/search.rs:572:51
[INFO] [stdout]     |
[INFO] [stdout] 572 | fn main_result() -> ::std::result::Result<(), Box<::std::error::Error>> {
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 572 | fn main_result() -> ::std::result::Result<(), Box<dyn (::std::error::Error)>> {
[INFO] [stdout]     |                                                   +++++                   +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `prev_idx`
[INFO] [stdout]   --> src/search.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 49 |     prev_idx: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Prev` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/search.rs:47:10
[INFO] [stdout]    |
[INFO] [stdout] 47 | #[derive(Clone)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.27s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/carrycoat-0d014d93ba815a7b)
[INFO] [stderr]   Executable unittests src/generate.rs (/opt/rustwide/target/debug/deps/generate-6fb1225ac5e03419)
[INFO] [stderr]   Executable unittests src/join.rs (/opt/rustwide/target/debug/deps/join-283a25564b251a02)
[INFO] [stderr]   Executable unittests src/lower_bound.rs (/opt/rustwide/target/debug/deps/lower_bound-2f4a652696c3ef3a)
[INFO] [stderr]   Executable unittests src/reduce.rs (/opt/rustwide/target/debug/deps/reduce-9a1c57c3c60ebb29)
[INFO] [stderr]   Executable unittests src/search.rs (/opt/rustwide/target/debug/deps/search-430d6beca842161c)
[INFO] [stderr]   Executable unittests src/verify.rs (/opt/rustwide/target/debug/deps/verify-0d19b393643621fa)
[INFO] running `Command { std: "docker" "inspect" "7b9849581fd967be7e4cb881005bd72ab31a31a3c1277ca792429e5135199e51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b9849581fd967be7e4cb881005bd72ab31a31a3c1277ca792429e5135199e51", kill_on_drop: false }`
[INFO] [stdout] 7b9849581fd967be7e4cb881005bd72ab31a31a3c1277ca792429e5135199e51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 839471c2137370c611314a9766f92410af37b7edcaea03d129f72c9d508919e0
[INFO] running `Command { std: "docker" "start" "-a" "839471c2137370c611314a9766f92410af37b7edcaea03d129f72c9d508919e0", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/generate.rs:27:49
[INFO] [stderr]    |
[INFO] [stderr] 27 |     for maybe_word in ::std::io::BufReader::new(try!(::std::fs::File::open(&args[1]))).split('\n' as u8) {
[INFO] [stderr]    |                                                 ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/generate.rs:28:20
[INFO] [stderr]    |
[INFO] [stderr] 28 |         let word = try!(maybe_word);
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/generate.rs:16:51
[INFO] [stderr]    |
[INFO] [stderr] 16 | fn main_result() -> ::std::result::Result<(), Box<::std::error::Error>> {
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 16 | fn main_result() -> ::std::result::Result<(), Box<dyn (::std::error::Error)>> {
[INFO] [stderr]    |                                                   +++++                   +
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/join.rs:27:49
[INFO] [stderr]    |
[INFO] [stderr] 27 |     for maybe_word in ::std::io::BufReader::new(try!(::std::fs::File::open(&args[1]))).split('\n' as u8) {
[INFO] [stderr]    |                                                 ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/join.rs:28:20
[INFO] [stderr]    |
[INFO] [stderr] 28 |         let word = try!(maybe_word);
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/join.rs:36:51
[INFO] [stderr]    |
[INFO] [stderr] 36 |     for maybe_joiner in ::std::io::BufReader::new(try!(::std::fs::File::open(&args[2]))).split('\n' as u8) {
[INFO] [stderr]    |                                                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/join.rs:37:22
[INFO] [stderr]    |
[INFO] [stderr] 37 |         let joiner = try!(maybe_joiner);
[INFO] [stderr]    |                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/join.rs:45:49
[INFO] [stderr]    |
[INFO] [stderr] 45 |     for maybe_word in ::std::io::BufReader::new(try!(::std::fs::File::open(&args[3]))).split('\n' as u8) {
[INFO] [stderr]    |                                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/join.rs:46:20
[INFO] [stderr]    |
[INFO] [stderr] 46 |         let word = try!(maybe_word);
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused label
[INFO] [stderr]   --> src/join.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 |     'outer: while particles_trie.len() > 0 {
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/join.rs:16:51
[INFO] [stderr]    |
[INFO] [stderr] 16 | fn main_result() -> ::std::result::Result<(), Box<::std::error::Error>> {
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 16 | fn main_result() -> ::std::result::Result<(), Box<dyn (::std::error::Error)>> {
[INFO] [stderr]    |                                                   +++++                   +
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/verify.rs:138:5
[INFO] [stderr]     |
[INFO] [stderr] 138 |     try!(try!(::std::fs::File::open(&args[1])).read_to_end(&mut portmantout));
[INFO] [stderr]     |     ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/verify.rs:138:10
[INFO] [stderr]     |
[INFO] [stderr] 138 |     try!(try!(::std::fs::File::open(&args[1])).read_to_end(&mut portmantout));
[INFO] [stderr]     |          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/verify.rs:148:49
[INFO] [stderr]     |
[INFO] [stderr] 148 |     for maybe_word in ::std::io::BufReader::new(try!(::std::fs::File::open(&args[2]))).split('\n' as u8) {
[INFO] [stderr]     |                                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/verify.rs:149:35
[INFO] [stderr]     |
[INFO] [stderr] 149 |         words.insert(BytesTrieKey(try!(maybe_word)), ());
[INFO] [stderr]     |                                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/verify.rs:164:49
[INFO] [stderr]     |
[INFO] [stderr] 164 |     for maybe_word in ::std::io::BufReader::new(try!(::std::fs::File::open(&args[3]))).split('\n' as u8) {
[INFO] [stderr]     |                                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/verify.rs:165:28
[INFO] [stderr]     |
[INFO] [stderr] 165 |         reduced_words.push(try!(maybe_word));
[INFO] [stderr]     |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/verify.rs:128:51
[INFO] [stderr]     |
[INFO] [stderr] 128 | fn main_result() -> ::std::result::Result<(), Box<::std::error::Error>> {
[INFO] [stderr]     |                                                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 128 | fn main_result() -> ::std::result::Result<(), Box<dyn (::std::error::Error)>> {
[INFO] [stderr]     |                                                   +++++                   +
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/search.rs:105:53
[INFO] [stderr]     |
[INFO] [stderr] 105 |         for maybe_word in ::std::io::BufReader::new(try!(::std::fs::File::open(path))).split('\n' as u8) {
[INFO] [stderr]     |                                                     ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/search.rs:106:24
[INFO] [stderr]     |
[INFO] [stderr] 106 |             let word = try!(maybe_word);
[INFO] [stderr]     |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/search.rs:123:9
[INFO] [stderr]     |
[INFO] [stderr] 123 |         try!(try!(::std::fs::File::open(path)).read_to_end(&mut portmantout));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/search.rs:123:14
[INFO] [stderr]     |
[INFO] [stderr] 123 |         try!(try!(::std::fs::File::open(path)).read_to_end(&mut portmantout));
[INFO] [stderr]     |              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/search.rs:352:20
[INFO] [stderr]     |
[INFO] [stderr] 352 |     let mut file = try!(::std::fs::File::create(&filename));
[INFO] [stderr]     |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/search.rs:367:25
[INFO] [stderr]     |
[INFO] [stderr] 367 |                         try!(file.write_all(&particle.chars));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/search.rs:368:25
[INFO] [stderr]     |
[INFO] [stderr] 368 |                         try!(file.write_all(padding));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/search.rs:374:25
[INFO] [stderr]     |
[INFO] [stderr] 374 |                         try!(file.write_all(&particle.chars[.. write_len]));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/search.rs:381:17
[INFO] [stderr]     |
[INFO] [stderr] 381 |                 try!(file.write_all(&particle.chars));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused label
[INFO] [stderr]    --> src/search.rs:470:5
[INFO] [stderr]     |
[INFO] [stderr] 470 |     'outer: while particles_trie.len() > 0 {
[INFO] [stderr]     |     ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/search.rs:619:5
[INFO] [stderr]     |
[INFO] [stderr] 619 |     try!(write_portmantout(&state));
[INFO] [stderr]     |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/search.rs:581:21
[INFO] [stderr]     |
[INFO] [stderr] 581 |     let mut state = try!(State::from_particle_file(&args[1]));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/search.rs:584:9
[INFO] [stderr]     |
[INFO] [stderr] 584 |         try!(state.resume(&args[4]));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/search.rs:592:51
[INFO] [stderr]     |
[INFO] [stderr] 592 |     for maybe_joiner in ::std::io::BufReader::new(try!(::std::fs::File::open(&args[2]))).split('\n' as u8) {
[INFO] [stderr]     |                                                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/search.rs:593:22
[INFO] [stderr]     |
[INFO] [stderr] 593 |         let joiner = try!(maybe_joiner);
[INFO] [stderr]     |                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/search.rs:601:49
[INFO] [stderr]     |
[INFO] [stderr] 601 |     for maybe_word in ::std::io::BufReader::new(try!(::std::fs::File::open(&args[3]))).split('\n' as u8) {
[INFO] [stderr]     |                                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/search.rs:602:20
[INFO] [stderr]     |
[INFO] [stderr] 602 |         let word = try!(maybe_word);
[INFO] [stderr]     |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/search.rs:609:23
[INFO] [stderr]     |
[INFO] [stderr] 609 |     let mut urandom = try!(::std::fs::File::open("/dev/urandom"));
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/search.rs:612:21
[INFO] [stderr]     |
[INFO] [stderr] 612 |         seed[idx] = try!(urandom.read_u32::<LittleEndian>());
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/search.rs:631:13
[INFO] [stderr]     |
[INFO] [stderr] 631 |             try!(write_portmantout(&state));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/search.rs:636:17
[INFO] [stderr]     |
[INFO] [stderr] 636 |                 try!(::std::io::stdout().flush());
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/search.rs:572:51
[INFO] [stderr]     |
[INFO] [stderr] 572 | fn main_result() -> ::std::result::Result<(), Box<::std::error::Error>> {
[INFO] [stderr]     |                                                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 572 | fn main_result() -> ::std::result::Result<(), Box<dyn (::std::error::Error)>> {
[INFO] [stderr]     |                                                   +++++                   +
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `prev_idx`
[INFO] [stderr]   --> src/search.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |     prev_idx: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] note: `Prev` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/search.rs:47:10
[INFO] [stderr]    |
[INFO] [stderr] 47 | #[derive(Clone)]
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `carrycoat` (bin "generate" test) generated 3 warnings
[INFO] [stderr] warning: `carrycoat` (bin "join" test) generated 8 warnings
[INFO] [stderr] warning: `carrycoat` (bin "verify" test) generated 7 warnings
[INFO] [stderr] warning: `carrycoat` (bin "search" test) generated 23 warnings
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/lower_bound.rs:29:49
[INFO] [stderr]    |
[INFO] [stderr] 29 |     for maybe_word in ::std::io::BufReader::new(try!(::std::fs::File::open(&args[1]))).split('\n' as u8) {
[INFO] [stderr]    |                                                 ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/lower_bound.rs:30:20
[INFO] [stderr]    |
[INFO] [stderr] 30 |         let word = try!(maybe_word);
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lower_bound.rs:19:51
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn main_result() -> ::std::result::Result<(), Box<::std::error::Error>> {
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn main_result() -> ::std::result::Result<(), Box<dyn (::std::error::Error)>> {
[INFO] [stderr]    |                                                   +++++                   +
[INFO] [stderr] 
[INFO] [stderr] warning: `carrycoat` (bin "lower_bound" test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/carrycoat-0d014d93ba815a7b)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_subseq ... ok
[INFO] [stderr]      Running unittests src/generate.rs (/opt/rustwide/target/debug/deps/generate-6fb1225ac5e03419)
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/join.rs (/opt/rustwide/target/debug/deps/join-283a25564b251a02)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lower_bound.rs (/opt/rustwide/target/debug/deps/lower_bound-2f4a652696c3ef3a)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/reduce.rs (/opt/rustwide/target/debug/deps/reduce-9a1c57c3c60ebb29)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/search.rs (/opt/rustwide/target/debug/deps/search-430d6beca842161c)
[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; finished in 0.00s
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/verify.rs (/opt/rustwide/target/debug/deps/verify-0d19b393643621fa)
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests carrycoat
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "839471c2137370c611314a9766f92410af37b7edcaea03d129f72c9d508919e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "839471c2137370c611314a9766f92410af37b7edcaea03d129f72c9d508919e0", kill_on_drop: false }`
[INFO] [stdout] 839471c2137370c611314a9766f92410af37b7edcaea03d129f72c9d508919e0