[INFO] fetching crate copperline 0.3.0...
[INFO] testing copperline-0.3.0 against 1.77.0 for beta-1.78-1
[INFO] extracting crate copperline 0.3.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate copperline 0.3.0 on toolchain 1.77.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.77.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate copperline 0.3.0
[INFO] finished tweaking crates.io crate copperline 0.3.0
[INFO] tweaked toml for crates.io crate copperline 0.3.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.77.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.77.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unicode-segmentation v0.1.3
[INFO] [stderr]   Downloaded strcursor v0.1.0
[INFO] [stderr]   Downloaded nix v0.4.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.77.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0767d62f2a07d01c5e676671b974dfdf277e2b3d2a61e5dc2f54c3dfbba5a7c0
[INFO] running `Command { std: "docker" "start" "-a" "0767d62f2a07d01c5e676671b974dfdf277e2b3d2a61e5dc2f54c3dfbba5a7c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0767d62f2a07d01c5e676671b974dfdf277e2b3d2a61e5dc2f54c3dfbba5a7c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0767d62f2a07d01c5e676671b974dfdf277e2b3d2a61e5dc2f54c3dfbba5a7c0", kill_on_drop: false }`
[INFO] [stdout] 0767d62f2a07d01c5e676671b974dfdf277e2b3d2a61e5dc2f54c3dfbba5a7c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.77.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 510cba6ee9fd67657fe9b1fe754d9e49c17877633ce087018b240ce80cf23712
[INFO] running `Command { std: "docker" "start" "-a" "510cba6ee9fd67657fe9b1fe754d9e49c17877633ce087018b240ce80cf23712", kill_on_drop: false }`
[INFO] [stderr]    Compiling encoding_index_tests v0.1.4
[INFO] [stderr]    Compiling libc v0.1.12
[INFO] [stderr]    Compiling bitflags v0.3.3
[INFO] [stderr]    Compiling unicode-segmentation v0.1.3
[INFO] [stderr]    Compiling encoding-index-tradchinese v1.20141219.5
[INFO] [stderr]    Compiling encoding-index-japanese v1.20141219.5
[INFO] [stderr]    Compiling encoding-index-korean v1.20141219.5
[INFO] [stderr]    Compiling encoding-index-simpchinese v1.20141219.5
[INFO] [stderr]    Compiling encoding-index-singlebyte v1.20141219.5
[INFO] [stderr]    Compiling nix v0.4.3
[INFO] [stderr]    Compiling strcursor v0.1.0
[INFO] [stderr]    Compiling encoding v0.2.33
[INFO] [stderr]    Compiling copperline v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/term.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |         try!(flock(fd, FlockArg::LockExclusive));
[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/term.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         try!(termios::tcsetattr(fd, termios::TCSAFLUSH, &raw));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/term.rs:24:32
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let original_termios = try!(termios::tcgetattr(fd));
[INFO] [stdout]    |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/term.rs:95:17
[INFO] [stdout]    |
[INFO] [stdout] 95 |         let n = try!(read(self.in_fd, &mut input));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |         try!(ctx.raw.write(&buffer.get_line(ctx.prompt)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:56:20
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let byte = try!(try!(ctx.term.read_byte()).ok_or(Error::EndOfFile));
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:56:25
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let byte = try!(try!(ctx.term.read_byte()).ok_or(Error::EndOfFile));
[INFO] [stdout]    |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/lib.rs:61:26
[INFO] [stdout]    |
[INFO] [stdout] 61 |                 for _ in (0..len) {
[INFO] [stdout]    |                          ^      ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 61 -                 for _ in (0..len) {
[INFO] [stdout] 61 +                 for _ in 0..len {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:104:61
[INFO] [stdout]     |
[INFO] [stdout] 104 |                     instr::Instr::Clear                  => try!(ctx.raw.clear()),
[INFO] [stdout]     |                                                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/lib.rs:109:26
[INFO] [stdout]     |
[INFO] [stdout] 109 |                 for _ in (0..len) {
[INFO] [stdout]     |                          ^      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 109 -                 for _ in (0..len) {
[INFO] [stdout] 109 +                 for _ in 0..len {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:202:23
[INFO] [stdout]     |
[INFO] [stdout] 202 |         let mut raw = try!(self.term.acquire_raw_mode());
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RawDecoder`
[INFO] [stdout]  --> src/parser.rs:3:36
[INFO] [stdout]   |
[INFO] [stdout] 3 | use encoding::types::{EncodingRef, RawDecoder};
[INFO] [stdout]   |                                    ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `reset` is never used
[INFO] [stdout]   --> src/buffer.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl Buffer {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn reset(&mut self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `pop` is never used
[INFO] [stdout]   --> src/history.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 49 | impl History {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 67 |     pub fn pop(&mut self) -> Option<String> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "510cba6ee9fd67657fe9b1fe754d9e49c17877633ce087018b240ce80cf23712", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "510cba6ee9fd67657fe9b1fe754d9e49c17877633ce087018b240ce80cf23712", kill_on_drop: false }`
[INFO] [stdout] 510cba6ee9fd67657fe9b1fe754d9e49c17877633ce087018b240ce80cf23712
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.77.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0a4d65ecab4ac699311f1a07535dcf79a9d388f08f9ac48994c2cbbf0edf2d95
[INFO] running `Command { std: "docker" "start" "-a" "0a4d65ecab4ac699311f1a07535dcf79a9d388f08f9ac48994c2cbbf0edf2d95", kill_on_drop: false }`
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/term.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |         try!(flock(fd, FlockArg::LockExclusive));
[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/term.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         try!(termios::tcsetattr(fd, termios::TCSAFLUSH, &raw));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/term.rs:24:32
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let original_termios = try!(termios::tcgetattr(fd));
[INFO] [stdout]    |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/term.rs:95:17
[INFO] [stdout]    |
[INFO] [stdout] 95 |         let n = try!(read(self.in_fd, &mut input));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |         try!(ctx.raw.write(&buffer.get_line(ctx.prompt)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:56:20
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let byte = try!(try!(ctx.term.read_byte()).ok_or(Error::EndOfFile));
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:56:25
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let byte = try!(try!(ctx.term.read_byte()).ok_or(Error::EndOfFile));
[INFO] [stdout]    |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/lib.rs:61:26
[INFO] [stdout]    |
[INFO] [stdout] 61 |                 for _ in (0..len) {
[INFO] [stdout]    |                          ^      ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 61 -                 for _ in (0..len) {
[INFO] [stdout] 61 +                 for _ in 0..len {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:104:61
[INFO] [stdout]     |
[INFO] [stdout] 104 |                     instr::Instr::Clear                  => try!(ctx.raw.clear()),
[INFO] [stdout]     |                                                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/lib.rs:109:26
[INFO] [stdout]     |
[INFO] [stdout] 109 |                 for _ in (0..len) {
[INFO] [stdout]     |                          ^      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 109 -                 for _ in (0..len) {
[INFO] [stdout] 109 +                 for _ in 0..len {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:202:23
[INFO] [stdout]     |
[INFO] [stdout] 202 |         let mut raw = try!(self.term.acquire_raw_mode());
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RawDecoder`
[INFO] [stdout]  --> src/parser.rs:3:36
[INFO] [stdout]   |
[INFO] [stdout] 3 | use encoding::types::{EncodingRef, RawDecoder};
[INFO] [stdout]   |                                    ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `reset` is never used
[INFO] [stdout]   --> src/buffer.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl Buffer {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn reset(&mut self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `pop` is never used
[INFO] [stdout]   --> src/history.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 49 | impl History {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 67 |     pub fn pop(&mut self) -> Option<String> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling copperline v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/term.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |         try!(flock(fd, FlockArg::LockExclusive));
[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/term.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         try!(termios::tcsetattr(fd, termios::TCSAFLUSH, &raw));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/term.rs:24:32
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let original_termios = try!(termios::tcgetattr(fd));
[INFO] [stdout]    |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/term.rs:95:17
[INFO] [stdout]    |
[INFO] [stdout] 95 |         let n = try!(read(self.in_fd, &mut input));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |         try!(ctx.raw.write(&buffer.get_line(ctx.prompt)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:56:20
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let byte = try!(try!(ctx.term.read_byte()).ok_or(Error::EndOfFile));
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:56:25
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let byte = try!(try!(ctx.term.read_byte()).ok_or(Error::EndOfFile));
[INFO] [stdout]    |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/lib.rs:61:26
[INFO] [stdout]    |
[INFO] [stdout] 61 |                 for _ in (0..len) {
[INFO] [stdout]    |                          ^      ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 61 -                 for _ in (0..len) {
[INFO] [stdout] 61 +                 for _ in 0..len {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:104:61
[INFO] [stdout]     |
[INFO] [stdout] 104 |                     instr::Instr::Clear                  => try!(ctx.raw.clear()),
[INFO] [stdout]     |                                                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/lib.rs:109:26
[INFO] [stdout]     |
[INFO] [stdout] 109 |                 for _ in (0..len) {
[INFO] [stdout]     |                          ^      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 109 -                 for _ in (0..len) {
[INFO] [stdout] 109 +                 for _ in 0..len {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:202:23
[INFO] [stdout]     |
[INFO] [stdout] 202 |         let mut raw = try!(self.term.acquire_raw_mode());
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RawDecoder`
[INFO] [stdout]  --> src/parser.rs:3:36
[INFO] [stdout]   |
[INFO] [stdout] 3 | use encoding::types::{EncodingRef, RawDecoder};
[INFO] [stdout]   |                                    ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `reset` is never used
[INFO] [stdout]   --> src/buffer.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl Buffer {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn reset(&mut self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `pop` is never used
[INFO] [stdout]   --> src/history.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 49 | impl History {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 67 |     pub fn pop(&mut self) -> Option<String> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "0a4d65ecab4ac699311f1a07535dcf79a9d388f08f9ac48994c2cbbf0edf2d95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a4d65ecab4ac699311f1a07535dcf79a9d388f08f9ac48994c2cbbf0edf2d95", kill_on_drop: false }`
[INFO] [stdout] 0a4d65ecab4ac699311f1a07535dcf79a9d388f08f9ac48994c2cbbf0edf2d95
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.77.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 64221230b3e22c3eb9aee95f72901dd1a3370a3da635f4a5bae494c2067f00ab
[INFO] running `Command { std: "docker" "start" "-a" "64221230b3e22c3eb9aee95f72901dd1a3370a3da635f4a5bae494c2067f00ab", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/term.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |         try!(flock(fd, FlockArg::LockExclusive));
[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/term.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |         try!(termios::tcsetattr(fd, termios::TCSAFLUSH, &raw));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/term.rs:24:32
[INFO] [stderr]    |
[INFO] [stderr] 24 |         let original_termios = try!(termios::tcgetattr(fd));
[INFO] [stderr]    |                                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/term.rs:95:17
[INFO] [stderr]    |
[INFO] [stderr] 95 |         let n = try!(read(self.in_fd, &mut input));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:55:9
[INFO] [stderr]    |
[INFO] [stderr] 55 |         try!(ctx.raw.write(&buffer.get_line(ctx.prompt)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:56:20
[INFO] [stderr]    |
[INFO] [stderr] 56 |         let byte = try!(try!(ctx.term.read_byte()).ok_or(Error::EndOfFile));
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:56:25
[INFO] [stderr]    |
[INFO] [stderr] 56 |         let byte = try!(try!(ctx.term.read_byte()).ok_or(Error::EndOfFile));
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> src/lib.rs:61:26
[INFO] [stderr]    |
[INFO] [stderr] 61 |                 for _ in (0..len) {
[INFO] [stderr]    |                          ^      ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 61 -                 for _ in (0..len) {
[INFO] [stderr] 61 +                 for _ in 0..len {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:104:61
[INFO] [stderr]     |
[INFO] [stderr] 104 |                     instr::Instr::Clear                  => try!(ctx.raw.clear()),
[INFO] [stderr]     |                                                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/lib.rs:109:26
[INFO] [stderr]     |
[INFO] [stderr] 109 |                 for _ in (0..len) {
[INFO] [stderr]     |                          ^      ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 109 -                 for _ in (0..len) {
[INFO] [stderr] 109 +                 for _ in 0..len {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:202:23
[INFO] [stderr]     |
[INFO] [stderr] 202 |         let mut raw = try!(self.term.acquire_raw_mode());
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `RawDecoder`
[INFO] [stderr]  --> src/parser.rs:3:36
[INFO] [stderr]   |
[INFO] [stderr] 3 | use encoding::types::{EncodingRef, RawDecoder};
[INFO] [stderr]   |                                    ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `reset` is never used
[INFO] [stderr]   --> src/buffer.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 14 | impl Buffer {
[INFO] [stderr]    | ----------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 29 |     pub fn reset(&mut self) {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `pop` is never used
[INFO] [stderr]   --> src/history.rs:67:12
[INFO] [stderr]    |
[INFO] [stderr] 49 | impl History {
[INFO] [stderr]    | ------------ method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 67 |     pub fn pop(&mut self) -> Option<String> {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `copperline` (lib) generated 14 warnings (run `cargo fix --lib -p copperline` to apply 2 suggestions)
[INFO] [stderr] warning: `copperline` (lib test) generated 14 warnings (14 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/copperline-13ce465f5171c9af)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test buffer::move_and_insert_ascii ... ok
[INFO] [stdout] test buffer::move_and_insert_cjk ... ok
[INFO] [stdout] test buffer::move_and_insert_cyrillic ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- buffer::move_and_insert_cyrillic stdout ----
[INFO] [stdout] thread 'buffer::move_and_insert_cyrillic' panicked at src/buffer.rs:163:5:
[INFO] [stdout] assertion `left == right` failed
[INFO] [stdout]   left: "ѾЙЊҖ"
[INFO] [stdout]  right: "ѾчЊҖ"
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5556c985fa16 - std::backtrace_rs::backtrace::libunwind::trace::h92ba5ac126ecc5ad
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x5556c985fa16 - std::backtrace_rs::backtrace::trace_unsynchronized::hfaa118b6e3a8f31a
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x5556c985fa16 - std::sys_common::backtrace::_print_fmt::h2075f185adf13bbd
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x5556c985fa16 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h9c4bd387f9f3f544
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x5556c9888710 - core::fmt::rt::Argument::fmt::h018ecebdf268b5bb
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x5556c9888710 - core::fmt::write::h938c332fdab924eb
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x5556c985d2ff - std::io::Write::write_fmt::hf5d6d29a094a9ad9
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/io/mod.rs:1846:15
[INFO] [stdout]    7:     0x5556c985f7f4 - std::sys_common::backtrace::_print::h3595c0f4303f3ccd
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x5556c985f7f4 - std::sys_common::backtrace::print::ha888e6736b0bc71f
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x5556c9861567 - std::panicking::default_hook::{{closure}}::he19a7f79f7beab5e
[INFO] [stdout]   10:     0x5556c986124d - std::panicking::default_hook::h67efe04e9a5d446e
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:289:9
[INFO] [stdout]   11:     0x5556c982f567 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::ha485cc981b933d53
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   12:     0x5556c982f567 - test::test_main::{{closure}}::h970c4d535211cea5
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/test/src/lib.rs:138:21
[INFO] [stdout]   13:     0x5556c9861b86 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h9c9759b104a0af15
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   14:     0x5556c9861b86 - std::panicking::rust_panic_with_hook::h49021cdbc4b22349
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:785:13
[INFO] [stdout]   15:     0x5556c98618d2 - std::panicking::begin_panic_handler::{{closure}}::hfbf601f3d8c62d13
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:659:13
[INFO] [stdout]   16:     0x5556c985ff16 - std::sys_common::backtrace::__rust_end_short_backtrace::h98dd020b6e913806
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x5556c9861624 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:647:5
[INFO] [stdout]   18:     0x5556c97f6775 - core::panicking::panic_fmt::h0d3f1893e38be419
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x5556c97f6abb - core::panicking::assert_failed_inner::he66e930fc360d575
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/panicking.rs:342:17
[INFO] [stdout]   20:     0x5556c97f900e - core::panicking::assert_failed::h3b570b097dba0bce
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/panicking.rs:297:5
[INFO] [stdout]   21:     0x5556c97fad18 - copperline::buffer::move_and_insert_cyrillic::hf59b9dc55409b44f
[INFO] [stdout]                                at /opt/rustwide/workdir/src/buffer.rs:163:5
[INFO] [stdout]   22:     0x5556c97faaa7 - copperline::buffer::move_and_insert_cyrillic::{{closure}}::h8d55f803f5d10717
[INFO] [stdout]                                at /opt/rustwide/workdir/src/buffer.rs:147:30
[INFO] [stdout]   23:     0x5556c97f82e6 - core::ops::function::FnOnce::call_once::ha0daf003978b4082
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x5556c983515f - core::ops::function::FnOnce::call_once::hc4365f2905c13fb3
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x5556c983515f - test::__rust_begin_short_backtrace::h23efa09c82420171
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/test/src/lib.rs:621:18
[INFO] [stdout]   26:     0x5556c9833f81 - test::run_test_in_process::{{closure}}::hf1473bb1a6c04edb
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/test/src/lib.rs:644:60
[INFO] [stdout]   27:     0x5556c9833f81 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hff07c3f39ec1a940
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x5556c9833f81 - std::panicking::try::do_call::h344a2a0d830f8cdb
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:554:40
[INFO] [stdout]   29:     0x5556c9833f81 - std::panicking::try::h307dc78c49c41dfc
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:518:19
[INFO] [stdout]   30:     0x5556c9833f81 - std::panic::catch_unwind::h09ff4c41f37beb25
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panic.rs:142:14
[INFO] [stdout]   31:     0x5556c9833f81 - test::run_test_in_process::h25a8f909b68e3831
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/test/src/lib.rs:644:27
[INFO] [stdout]   32:     0x5556c9833f81 - test::run_test::{{closure}}::h9934b77d061da8ff
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/test/src/lib.rs:567:43
[INFO] [stdout]   33:     0x5556c97fb366 - test::run_test::{{closure}}::hc3fe15393b08198a
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/test/src/lib.rs:595:41
[INFO] [stdout]   34:     0x5556c97fb366 - std::sys_common::backtrace::__rust_begin_short_backtrace::h2751c43450246c92
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   35:     0x5556c98003a7 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h1c68a4efdf3a14d2
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/thread/mod.rs:529:17
[INFO] [stdout]   36:     0x5556c98003a7 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4aa23e023cec824
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x5556c98003a7 - std::panicking::try::do_call::hb75ff41794a19e9d
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:554:40
[INFO] [stdout]   38:     0x5556c98003a7 - std::panicking::try::ha7903bccf307108c
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:518:19
[INFO] [stdout]   39:     0x5556c98003a7 - std::panic::catch_unwind::h85a1dff12b1bcadc
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panic.rs:142:14
[INFO] [stdout]   40:     0x5556c98003a7 - std::thread::Builder::spawn_unchecked_::{{closure}}::h2c9f92cbe6cfd7e3
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/thread/mod.rs:528:30
[INFO] [stdout]   41:     0x5556c98003a7 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h7d4afe73c576828a
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x5556c9865f25 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h4f08d401a486e446
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   43:     0x5556c9865f25 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3476dfcdba628abc
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   44:     0x5556c9865f25 - std::sys::pal::unix::thread::Thread::new::thread_start::h2770ac7f8882db09
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/sys/pal/unix/thread.rs:108:17
[INFO] [stdout]   45:     0x7fb880d9dac3 - <unknown>
[INFO] [stdout]   46:     0x7fb880e2ebf4 - __clone
[INFO] [stdout]   47:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     buffer::move_and_insert_cyrillic
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 2 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "64221230b3e22c3eb9aee95f72901dd1a3370a3da635f4a5bae494c2067f00ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64221230b3e22c3eb9aee95f72901dd1a3370a3da635f4a5bae494c2067f00ab", kill_on_drop: false }`
[INFO] [stdout] 64221230b3e22c3eb9aee95f72901dd1a3370a3da635f4a5bae494c2067f00ab
[INFO] testing copperline-0.3.0 against beta-2024-03-24 for beta-1.78-1
[INFO] extracting crate copperline 0.3.0 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate copperline 0.3.0 on toolchain beta-2024-03-24
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-03-24" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate copperline 0.3.0
[INFO] finished tweaking crates.io crate copperline 0.3.0
[INFO] tweaked toml for crates.io crate copperline 0.3.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-03-24" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-03-24" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-03-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a9df4184b8b2d06f9a60bf53b7c1b56d7c27a20c01e393367c327b719cde10c6
[INFO] running `Command { std: "docker" "start" "-a" "a9df4184b8b2d06f9a60bf53b7c1b56d7c27a20c01e393367c327b719cde10c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a9df4184b8b2d06f9a60bf53b7c1b56d7c27a20c01e393367c327b719cde10c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9df4184b8b2d06f9a60bf53b7c1b56d7c27a20c01e393367c327b719cde10c6", kill_on_drop: false }`
[INFO] [stdout] a9df4184b8b2d06f9a60bf53b7c1b56d7c27a20c01e393367c327b719cde10c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-03-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9920769b2e340462dfd67342d8f2610da148efa3f93d5c05cadc8ac5a9d5776
[INFO] running `Command { std: "docker" "start" "-a" "e9920769b2e340462dfd67342d8f2610da148efa3f93d5c05cadc8ac5a9d5776", kill_on_drop: false }`
[INFO] [stderr]    Compiling encoding_index_tests v0.1.4
[INFO] [stderr]    Compiling bitflags v0.3.3
[INFO] [stderr]    Compiling libc v0.1.12
[INFO] [stderr]    Compiling unicode-segmentation v0.1.3
[INFO] [stderr]    Compiling encoding-index-simpchinese v1.20141219.5
[INFO] [stderr]    Compiling encoding-index-tradchinese v1.20141219.5
[INFO] [stderr]    Compiling encoding-index-korean v1.20141219.5
[INFO] [stderr]    Compiling encoding-index-japanese v1.20141219.5
[INFO] [stderr]    Compiling encoding-index-singlebyte v1.20141219.5
[INFO] [stderr]    Compiling nix v0.4.3
[INFO] [stderr]    Compiling strcursor v0.1.0
[INFO] [stderr]    Compiling encoding v0.2.33
[INFO] [stderr]    Compiling copperline v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `nix` is imported redundantly
[INFO] [stdout]   --> src/error.rs:3:5
[INFO] [stdout]    |
[INFO] [stdout] 3  | use nix;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | extern crate nix;
[INFO] [stdout]    | ----------------- the item `nix` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Clone` is imported redundantly
[INFO] [stdout]  --> src/parser.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::clone::Clone;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/std/src/prelude/mod.rs:105:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Clone` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]  --> src/term.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std;
[INFO] [stdout]   |     ^^^ the item `std` is already imported by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/term.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | use libc;
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | extern crate libc;
[INFO] [stdout]    | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `nix` is imported redundantly
[INFO] [stdout]   --> src/term.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout] 5  | use nix;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | extern crate nix;
[INFO] [stdout]    | ----------------- the item `nix` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/term.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |         try!(flock(fd, FlockArg::LockExclusive));
[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/term.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         try!(termios::tcsetattr(fd, termios::TCSAFLUSH, &raw));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/term.rs:24:32
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let original_termios = try!(termios::tcgetattr(fd));
[INFO] [stdout]    |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/term.rs:95:17
[INFO] [stdout]    |
[INFO] [stdout] 95 |         let n = try!(read(self.in_fd, &mut input));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |         try!(ctx.raw.write(&buffer.get_line(ctx.prompt)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:56:20
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let byte = try!(try!(ctx.term.read_byte()).ok_or(Error::EndOfFile));
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:56:25
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let byte = try!(try!(ctx.term.read_byte()).ok_or(Error::EndOfFile));
[INFO] [stdout]    |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/lib.rs:61:26
[INFO] [stdout]    |
[INFO] [stdout] 61 |                 for _ in (0..len) {
[INFO] [stdout]    |                          ^      ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 61 -                 for _ in (0..len) {
[INFO] [stdout] 61 +                 for _ in 0..len {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:104:61
[INFO] [stdout]     |
[INFO] [stdout] 104 |                     instr::Instr::Clear                  => try!(ctx.raw.clear()),
[INFO] [stdout]     |                                                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/lib.rs:109:26
[INFO] [stdout]     |
[INFO] [stdout] 109 |                 for _ in (0..len) {
[INFO] [stdout]     |                          ^      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 109 -                 for _ in (0..len) {
[INFO] [stdout] 109 +                 for _ in 0..len {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:202:23
[INFO] [stdout]     |
[INFO] [stdout] 202 |         let mut raw = try!(self.term.acquire_raw_mode());
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RawDecoder`
[INFO] [stdout]  --> src/parser.rs:3:36
[INFO] [stdout]   |
[INFO] [stdout] 3 | use encoding::types::{EncodingRef, RawDecoder};
[INFO] [stdout]   |                                    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `reset` is never used
[INFO] [stdout]   --> src/buffer.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl Buffer {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn reset(&mut self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `pop` is never used
[INFO] [stdout]   --> src/history.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 49 | impl History {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 67 |     pub fn pop(&mut self) -> Option<String> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `Command { std: "docker" "inspect" "e9920769b2e340462dfd67342d8f2610da148efa3f93d5c05cadc8ac5a9d5776", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9920769b2e340462dfd67342d8f2610da148efa3f93d5c05cadc8ac5a9d5776", kill_on_drop: false }`
[INFO] [stdout] e9920769b2e340462dfd67342d8f2610da148efa3f93d5c05cadc8ac5a9d5776
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-03-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c3434be8ae7d43aed98b5354bd83b81ec33975c0d30ed52c8c20a634bc738fdf
[INFO] running `Command { std: "docker" "start" "-a" "c3434be8ae7d43aed98b5354bd83b81ec33975c0d30ed52c8c20a634bc738fdf", kill_on_drop: false }`
[INFO] [stdout] warning: the item `nix` is imported redundantly
[INFO] [stdout]   --> src/error.rs:3:5
[INFO] [stdout]    |
[INFO] [stdout] 3  | use nix;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | extern crate nix;
[INFO] [stdout]    | ----------------- the item `nix` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Clone` is imported redundantly
[INFO] [stdout]  --> src/parser.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::clone::Clone;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/std/src/prelude/mod.rs:105:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Clone` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]  --> src/term.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std;
[INFO] [stdout]   |     ^^^ the item `std` is already imported by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/term.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | use libc;
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | extern crate libc;
[INFO] [stdout]    | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `nix` is imported redundantly
[INFO] [stdout]   --> src/term.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout] 5  | use nix;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | extern crate nix;
[INFO] [stdout]    | ----------------- the item `nix` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/term.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |         try!(flock(fd, FlockArg::LockExclusive));
[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/term.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         try!(termios::tcsetattr(fd, termios::TCSAFLUSH, &raw));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/term.rs:24:32
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let original_termios = try!(termios::tcgetattr(fd));
[INFO] [stdout]    |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/term.rs:95:17
[INFO] [stdout]    |
[INFO] [stdout] 95 |         let n = try!(read(self.in_fd, &mut input));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |         try!(ctx.raw.write(&buffer.get_line(ctx.prompt)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:56:20
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let byte = try!(try!(ctx.term.read_byte()).ok_or(Error::EndOfFile));
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:56:25
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let byte = try!(try!(ctx.term.read_byte()).ok_or(Error::EndOfFile));
[INFO] [stdout]    |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/lib.rs:61:26
[INFO] [stdout]    |
[INFO] [stdout] 61 |                 for _ in (0..len) {
[INFO] [stdout]    |                          ^      ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 61 -                 for _ in (0..len) {
[INFO] [stdout] 61 +                 for _ in 0..len {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:104:61
[INFO] [stdout]     |
[INFO] [stdout] 104 |                     instr::Instr::Clear                  => try!(ctx.raw.clear()),
[INFO] [stdout]     |                                                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/lib.rs:109:26
[INFO] [stdout]     |
[INFO] [stdout] 109 |                 for _ in (0..len) {
[INFO] [stdout]     |                          ^      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 109 -                 for _ in (0..len) {
[INFO] [stdout] 109 +                 for _ in 0..len {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:202:23
[INFO] [stdout]     |
[INFO] [stdout] 202 |         let mut raw = try!(self.term.acquire_raw_mode());
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RawDecoder`
[INFO] [stdout]  --> src/parser.rs:3:36
[INFO] [stdout]   |
[INFO] [stdout] 3 | use encoding::types::{EncodingRef, RawDecoder};
[INFO] [stdout]   |                                    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `reset` is never used
[INFO] [stdout]   --> src/buffer.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl Buffer {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn reset(&mut self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `pop` is never used
[INFO] [stdout]   --> src/history.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 49 | impl History {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 67 |     pub fn pop(&mut self) -> Option<String> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling copperline v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `nix` is imported redundantly
[INFO] [stdout]   --> src/error.rs:3:5
[INFO] [stdout]    |
[INFO] [stdout] 3  | use nix;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | extern crate nix;
[INFO] [stdout]    | ----------------- the item `nix` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Clone` is imported redundantly
[INFO] [stdout]  --> src/parser.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::clone::Clone;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/std/src/prelude/mod.rs:105:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Clone` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]  --> src/term.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std;
[INFO] [stdout]   |     ^^^ the item `std` is already imported by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/term.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | use libc;
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | extern crate libc;
[INFO] [stdout]    | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `nix` is imported redundantly
[INFO] [stdout]   --> src/term.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout] 5  | use nix;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | extern crate nix;
[INFO] [stdout]    | ----------------- the item `nix` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/term.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |         try!(flock(fd, FlockArg::LockExclusive));
[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/term.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         try!(termios::tcsetattr(fd, termios::TCSAFLUSH, &raw));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/term.rs:24:32
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let original_termios = try!(termios::tcgetattr(fd));
[INFO] [stdout]    |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/term.rs:95:17
[INFO] [stdout]    |
[INFO] [stdout] 95 |         let n = try!(read(self.in_fd, &mut input));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |         try!(ctx.raw.write(&buffer.get_line(ctx.prompt)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:56:20
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let byte = try!(try!(ctx.term.read_byte()).ok_or(Error::EndOfFile));
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:56:25
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let byte = try!(try!(ctx.term.read_byte()).ok_or(Error::EndOfFile));
[INFO] [stdout]    |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/lib.rs:61:26
[INFO] [stdout]    |
[INFO] [stdout] 61 |                 for _ in (0..len) {
[INFO] [stdout]    |                          ^      ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 61 -                 for _ in (0..len) {
[INFO] [stdout] 61 +                 for _ in 0..len {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:104:61
[INFO] [stdout]     |
[INFO] [stdout] 104 |                     instr::Instr::Clear                  => try!(ctx.raw.clear()),
[INFO] [stdout]     |                                                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/lib.rs:109:26
[INFO] [stdout]     |
[INFO] [stdout] 109 |                 for _ in (0..len) {
[INFO] [stdout]     |                          ^      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 109 -                 for _ in (0..len) {
[INFO] [stdout] 109 +                 for _ in 0..len {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:202:23
[INFO] [stdout]     |
[INFO] [stdout] 202 |         let mut raw = try!(self.term.acquire_raw_mode());
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RawDecoder`
[INFO] [stdout]  --> src/parser.rs:3:36
[INFO] [stdout]   |
[INFO] [stdout] 3 | use encoding::types::{EncodingRef, RawDecoder};
[INFO] [stdout]   |                                    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `reset` is never used
[INFO] [stdout]   --> src/buffer.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl Buffer {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn reset(&mut self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `pop` is never used
[INFO] [stdout]   --> src/history.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 49 | impl History {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 67 |     pub fn pop(&mut self) -> Option<String> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "c3434be8ae7d43aed98b5354bd83b81ec33975c0d30ed52c8c20a634bc738fdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3434be8ae7d43aed98b5354bd83b81ec33975c0d30ed52c8c20a634bc738fdf", kill_on_drop: false }`
[INFO] [stdout] c3434be8ae7d43aed98b5354bd83b81ec33975c0d30ed52c8c20a634bc738fdf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-03-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cb4310bcd686bf137c510f4212241fb8d9accd93db82392ee9e905a268356fa3
[INFO] running `Command { std: "docker" "start" "-a" "cb4310bcd686bf137c510f4212241fb8d9accd93db82392ee9e905a268356fa3", kill_on_drop: false }`
[INFO] [stderr] warning: the item `nix` is imported redundantly
[INFO] [stderr]   --> src/error.rs:3:5
[INFO] [stderr]    |
[INFO] [stderr] 3  | use nix;
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]   ::: src/lib.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | extern crate nix;
[INFO] [stderr]    | ----------------- the item `nix` is already imported here
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Clone` is imported redundantly
[INFO] [stderr]  --> src/parser.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::clone::Clone;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]  --> /rustc/277d06bc95c6c38a2337ccde798b2c709384bd84/library/std/src/prelude/mod.rs:105:13
[INFO] [stderr]   |
[INFO] [stderr]   = note: the item `Clone` is already defined here
[INFO] [stderr] 
[INFO] [stderr] warning: the item `std` is imported redundantly
[INFO] [stderr]  --> src/term.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std;
[INFO] [stderr]   |     ^^^ the item `std` is already imported by prelude
[INFO] [stderr] 
[INFO] [stderr] warning: the item `libc` is imported redundantly
[INFO] [stderr]   --> src/term.rs:4:5
[INFO] [stderr]    |
[INFO] [stderr] 4  | use libc;
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]   ::: src/lib.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | extern crate libc;
[INFO] [stderr]    | ------------------ the item `libc` is already imported here
[INFO] [stderr] 
[INFO] [stderr] warning: the item `nix` is imported redundantly
[INFO] [stderr]   --> src/term.rs:5:5
[INFO] [stderr]    |
[INFO] [stderr] 5  | use nix;
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]   ::: src/lib.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | extern crate nix;
[INFO] [stderr]    | ----------------- the item `nix` is already imported here
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/term.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |         try!(flock(fd, FlockArg::LockExclusive));
[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/term.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |         try!(termios::tcsetattr(fd, termios::TCSAFLUSH, &raw));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/term.rs:24:32
[INFO] [stderr]    |
[INFO] [stderr] 24 |         let original_termios = try!(termios::tcgetattr(fd));
[INFO] [stderr]    |                                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/term.rs:95:17
[INFO] [stderr]    |
[INFO] [stderr] 95 |         let n = try!(read(self.in_fd, &mut input));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:55:9
[INFO] [stderr]    |
[INFO] [stderr] 55 |         try!(ctx.raw.write(&buffer.get_line(ctx.prompt)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:56:20
[INFO] [stderr]    |
[INFO] [stderr] 56 |         let byte = try!(try!(ctx.term.read_byte()).ok_or(Error::EndOfFile));
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:56:25
[INFO] [stderr]    |
[INFO] [stderr] 56 |         let byte = try!(try!(ctx.term.read_byte()).ok_or(Error::EndOfFile));
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> src/lib.rs:61:26
[INFO] [stderr]    |
[INFO] [stderr] 61 |                 for _ in (0..len) {
[INFO] [stderr]    |                          ^      ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 61 -                 for _ in (0..len) {
[INFO] [stderr] 61 +                 for _ in 0..len {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:104:61
[INFO] [stderr]     |
[INFO] [stderr] 104 |                     instr::Instr::Clear                  => try!(ctx.raw.clear()),
[INFO] [stderr]     |                                                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/lib.rs:109:26
[INFO] [stderr]     |
[INFO] [stderr] 109 |                 for _ in (0..len) {
[INFO] [stderr]     |                          ^      ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 109 -                 for _ in (0..len) {
[INFO] [stderr] 109 +                 for _ in 0..len {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:202:23
[INFO] [stderr]     |
[INFO] [stderr] 202 |         let mut raw = try!(self.term.acquire_raw_mode());
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `RawDecoder`
[INFO] [stderr]  --> src/parser.rs:3:36
[INFO] [stderr]   |
[INFO] [stderr] 3 | use encoding::types::{EncodingRef, RawDecoder};
[INFO] [stderr]   |                                    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `reset` is never used
[INFO] [stderr]   --> src/buffer.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 14 | impl Buffer {
[INFO] [stderr]    | ----------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 29 |     pub fn reset(&mut self) {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `pop` is never used
[INFO] [stderr]   --> src/history.rs:67:12
[INFO] [stderr]    |
[INFO] [stderr] 49 | impl History {
[INFO] [stderr]    | ------------ method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 67 |     pub fn pop(&mut self) -> Option<String> {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `copperline` (lib) generated 19 warnings (run `cargo fix --lib -p copperline` to apply 2 suggestions)
[INFO] [stderr] warning: `copperline` (lib test) generated 19 warnings (19 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/copperline-eeb0f1999b6a3ebe)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test buffer::move_and_insert_cyrillic ... ok
[INFO] [stdout] test buffer::move_and_insert_ascii ... ok
[INFO] [stdout] test buffer::move_and_insert_cjk ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests copperline
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> src/lib.rs:61:26
[INFO] [stderr]    |
[INFO] [stderr] 61 |                 for _ in (0..len) {
[INFO] [stderr]    |                          ^      ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 61 -                 for _ in (0..len) {
[INFO] [stderr] 61 +                 for _ in 0..len {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/lib.rs:109:26
[INFO] [stderr]     |
[INFO] [stderr] 109 |                 for _ in (0..len) {
[INFO] [stderr]     |                          ^      ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 109 -                 for _ in (0..len) {
[INFO] [stderr] 109 +                 for _ in 0..len {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[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" "cb4310bcd686bf137c510f4212241fb8d9accd93db82392ee9e905a268356fa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb4310bcd686bf137c510f4212241fb8d9accd93db82392ee9e905a268356fa3", kill_on_drop: false }`
[INFO] [stdout] cb4310bcd686bf137c510f4212241fb8d9accd93db82392ee9e905a268356fa3