[INFO] fetching crate dd-lib 0.2.1...
[INFO] testing dd-lib-0.2.1 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate dd-lib 0.2.1 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate dd-lib 0.2.1
[INFO] finished tweaking crates.io crate dd-lib 0.2.1
[INFO] tweaked toml for crates.io crate dd-lib 0.2.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate dd-lib 0.2.1 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 18 packages to latest compatible versions
[INFO] [stderr]       Adding bitflags v1.3.2 (available: v2.9.4)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 38db9128f824e192ed6cb82af7082a6981dbd649fc135b079c8204a5dc636fb9
[INFO] running `Command { std: "docker" "start" "-a" "38db9128f824e192ed6cb82af7082a6981dbd649fc135b079c8204a5dc636fb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "38db9128f824e192ed6cb82af7082a6981dbd649fc135b079c8204a5dc636fb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38db9128f824e192ed6cb82af7082a6981dbd649fc135b079c8204a5dc636fb9", kill_on_drop: false }`
[INFO] [stdout] 38db9128f824e192ed6cb82af7082a6981dbd649fc135b079c8204a5dc636fb9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d5cea154bcdd83cf775a352c79d22287622a21b4dd357a56fe02f43d92fed90c
[INFO] running `Command { std: "docker" "start" "-a" "d5cea154bcdd83cf775a352c79d22287622a21b4dd357a56fe02f43d92fed90c", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling encoding8 v0.3.2
[INFO] [stderr]    Compiling dd-lib v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary braces around assigned value
[INFO] [stdout]   --> src/opts/flags/iflag.rs:71:22
[INFO] [stdout]    |
[INFO] [stdout] 71 |             flags |= { Self::from_str(flag)? };
[INFO] [stdout]    |                      ^^                     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 71 -             flags |= { Self::from_str(flag)? };
[INFO] [stdout] 71 +             flags |= Self::from_str(flag)?;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/io/errhandler.rs:48:17
[INFO] [stdout]    |
[INFO] [stdout] 48 |                 writeln!(self.e, "io error: <{}>; continuing", err);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 48 |                 let _ = writeln!(self.e, "io error: <{}>; continuing", err);
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/io/errhandler.rs:72:13
[INFO] [stdout]    |
[INFO] [stdout] 72 | /             writeln!(
[INFO] [stdout] 73 | |                 self,
[INFO] [stdout] 74 | |                 "dd in progress: unblock: elapsed: {}, wrote {} lines",
[INFO] [stdout] 75 | |                 elapsed(&start),
[INFO] [stdout] 76 | |                 lines
[INFO] [stdout] 77 | |             );
[INFO] [stdout]    | |_____________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 72 |             let _ = writeln!(
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/io/errhandler.rs:83:13
[INFO] [stdout]    |
[INFO] [stdout] 83 | /             writeln!(
[INFO] [stdout] 84 | |                 self,
[INFO] [stdout] 85 | |                 "dd in progress: unblock: elapsed: {}, wrote {} fixed-length blocks",
[INFO] [stdout] 86 | |                 elapsed(&start),
[INFO] [stdout] 87 | |                 blocks
[INFO] [stdout] 88 | |             );
[INFO] [stdout]    | |_____________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 83 |             let _ = writeln!(
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.14s
[INFO] running `Command { std: "docker" "inspect" "d5cea154bcdd83cf775a352c79d22287622a21b4dd357a56fe02f43d92fed90c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5cea154bcdd83cf775a352c79d22287622a21b4dd357a56fe02f43d92fed90c", kill_on_drop: false }`
[INFO] [stdout] d5cea154bcdd83cf775a352c79d22287622a21b4dd357a56fe02f43d92fed90c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d3e89c4b55ed46ecbc4ec8f429e3ddb4afba2e29caa7d1ba4cec4b9487da81e9
[INFO] running `Command { std: "docker" "start" "-a" "d3e89c4b55ed46ecbc4ec8f429e3ddb4afba2e29caa7d1ba4cec4b9487da81e9", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stdout] warning: unnecessary braces around assigned value
[INFO] [stdout]   --> src/opts/flags/iflag.rs:71:22
[INFO] [stdout]    |
[INFO] [stdout] 71 |             flags |= { Self::from_str(flag)? };
[INFO] [stdout]    |                      ^^                     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 71 -             flags |= { Self::from_str(flag)? };
[INFO] [stdout] 71 +             flags |= Self::from_str(flag)?;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/io/errhandler.rs:48:17
[INFO] [stdout]    |
[INFO] [stdout] 48 |                 writeln!(self.e, "io error: <{}>; continuing", err);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 48 |                 let _ = writeln!(self.e, "io error: <{}>; continuing", err);
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling dd-lib v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/io/errhandler.rs:72:13
[INFO] [stdout]    |
[INFO] [stdout] 72 | /             writeln!(
[INFO] [stdout] 73 | |                 self,
[INFO] [stdout] 74 | |                 "dd in progress: unblock: elapsed: {}, wrote {} lines",
[INFO] [stdout] 75 | |                 elapsed(&start),
[INFO] [stdout] 76 | |                 lines
[INFO] [stdout] 77 | |             );
[INFO] [stdout]    | |_____________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 72 |             let _ = writeln!(
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/io/errhandler.rs:83:13
[INFO] [stdout]    |
[INFO] [stdout] 83 | /             writeln!(
[INFO] [stdout] 84 | |                 self,
[INFO] [stdout] 85 | |                 "dd in progress: unblock: elapsed: {}, wrote {} fixed-length blocks",
[INFO] [stdout] 86 | |                 elapsed(&start),
[INFO] [stdout] 87 | |                 blocks
[INFO] [stdout] 88 | |             );
[INFO] [stdout]    | |_____________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 83 |             let _ = writeln!(
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/io/tests.rs:17:56
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn write(&mut self, buf: &[u8]) -> std::io::Result<(usize)> { Ok(buf.len()) }
[INFO] [stdout]    |                                                        ^     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 17 -     fn write(&mut self, buf: &[u8]) -> std::io::Result<(usize)> { Ok(buf.len()) }
[INFO] [stdout] 17 +     fn write(&mut self, buf: &[u8]) -> std::io::Result<usize> { Ok(buf.len()) }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around assigned value
[INFO] [stdout]   --> src/opts/flags/iflag.rs:71:22
[INFO] [stdout]    |
[INFO] [stdout] 71 |             flags |= { Self::from_str(flag)? };
[INFO] [stdout]    |                      ^^                     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 71 -             flags |= { Self::from_str(flag)? };
[INFO] [stdout] 71 +             flags |= Self::from_str(flag)?;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/io/errhandler.rs:48:17
[INFO] [stdout]    |
[INFO] [stdout] 48 |                 writeln!(self.e, "io error: <{}>; continuing", err);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 48 |                 let _ = writeln!(self.e, "io error: <{}>; continuing", err);
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/io/errhandler.rs:72:13
[INFO] [stdout]    |
[INFO] [stdout] 72 | /             writeln!(
[INFO] [stdout] 73 | |                 self,
[INFO] [stdout] 74 | |                 "dd in progress: unblock: elapsed: {}, wrote {} lines",
[INFO] [stdout] 75 | |                 elapsed(&start),
[INFO] [stdout] 76 | |                 lines
[INFO] [stdout] 77 | |             );
[INFO] [stdout]    | |_____________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 72 |             let _ = writeln!(
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/io/errhandler.rs:83:13
[INFO] [stdout]    |
[INFO] [stdout] 83 | /             writeln!(
[INFO] [stdout] 84 | |                 self,
[INFO] [stdout] 85 | |                 "dd in progress: unblock: elapsed: {}, wrote {} fixed-length blocks",
[INFO] [stdout] 86 | |                 elapsed(&start),
[INFO] [stdout] 87 | |                 blocks
[INFO] [stdout] 88 | |             );
[INFO] [stdout]    | |_____________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 83 |             let _ = writeln!(
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.22s
[INFO] running `Command { std: "docker" "inspect" "d3e89c4b55ed46ecbc4ec8f429e3ddb4afba2e29caa7d1ba4cec4b9487da81e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3e89c4b55ed46ecbc4ec8f429e3ddb4afba2e29caa7d1ba4cec4b9487da81e9", kill_on_drop: false }`
[INFO] [stdout] d3e89c4b55ed46ecbc4ec8f429e3ddb4afba2e29caa7d1ba4cec4b9487da81e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 27be9024c6f1b048f67a46dcbcbb72e5b703b764d0c9ea8508734b0ffbd84711
[INFO] running `Command { std: "docker" "start" "-a" "27be9024c6f1b048f67a46dcbcbb72e5b703b764d0c9ea8508734b0ffbd84711", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]   --> src/opts/flags/iflag.rs:71:22
[INFO] [stderr]    |
[INFO] [stderr] 71 |             flags |= { Self::from_str(flag)? };
[INFO] [stderr]    |                      ^^                     ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_braces)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these braces
[INFO] [stderr]    |
[INFO] [stderr] 71 -             flags |= { Self::from_str(flag)? };
[INFO] [stderr] 71 +             flags |= Self::from_str(flag)?;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/io/errhandler.rs:48:17
[INFO] [stderr]    |
[INFO] [stderr] 48 |                 writeln!(self.e, "io error: <{}>; continuing", err);
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 48 |                 let _ = writeln!(self.e, "io error: <{}>; continuing", err);
[INFO] [stderr]    |                 +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/io/errhandler.rs:72:13
[INFO] [stderr]    |
[INFO] [stderr] 72 | /             writeln!(
[INFO] [stderr] 73 | |                 self,
[INFO] [stderr] 74 | |                 "dd in progress: unblock: elapsed: {}, wrote {} lines",
[INFO] [stderr] 75 | |                 elapsed(&start),
[INFO] [stderr] 76 | |                 lines
[INFO] [stderr] 77 | |             );
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 72 |             let _ = writeln!(
[INFO] [stderr]    |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/io/errhandler.rs:83:13
[INFO] [stderr]    |
[INFO] [stderr] 83 | /             writeln!(
[INFO] [stderr] 84 | |                 self,
[INFO] [stderr] 85 | |                 "dd in progress: unblock: elapsed: {}, wrote {} fixed-length blocks",
[INFO] [stderr] 86 | |                 elapsed(&start),
[INFO] [stderr] 87 | |                 blocks
[INFO] [stderr] 88 | |             );
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 83 |             let _ = writeln!(
[INFO] [stderr]    |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/io/tests.rs:17:56
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn write(&mut self, buf: &[u8]) -> std::io::Result<(usize)> { Ok(buf.len()) }
[INFO] [stderr]    |                                                        ^     ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 17 -     fn write(&mut self, buf: &[u8]) -> std::io::Result<(usize)> { Ok(buf.len()) }
[INFO] [stderr] 17 +     fn write(&mut self, buf: &[u8]) -> std::io::Result<usize> { Ok(buf.len()) }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: `dd-lib` (lib) generated 4 warnings (run `cargo fix --lib -p dd-lib` to apply 1 suggestion)
[INFO] [stderr] warning: `dd-lib` (lib test) generated 5 warnings (4 duplicates) (run `cargo fix --lib -p dd-lib --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/dd_lib-9b98b7b4348621c2)
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test io::tests::test_block ... ok
[INFO] [stdout] test opts::flags::tests::oflag ... ok
[INFO] [stdout] test io::tests::test_standard ... ok
[INFO] [stdout] test io::tests::test_unblock ... ok
[INFO] [stdout] test opts::flags::tests::iflag ... ok
[INFO] [stdout] test opts::flags::tests::cflag ... ok
[INFO] [stdout] test tests::block ... ok
[INFO] [stdout] test io::tests::test_limited_copy ... ok
[INFO] [stdout] test tests::seek_input_and_block_size ... ok
[INFO] [stdout] test tests::base_case ... ok
[INFO] [stdout] test tests::conversion_to_uppercase ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests dd_lib
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]   --> src/opts/flags/iflag.rs:71:22
[INFO] [stderr]    |
[INFO] [stderr] 71 |             flags |= { Self::from_str(flag)? };
[INFO] [stderr]    |                      ^^                     ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_braces)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these braces
[INFO] [stderr]    |
[INFO] [stderr] 71 -             flags |= { Self::from_str(flag)? };
[INFO] [stderr] 71 +             flags |= Self::from_str(flag)?;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/opts/mod.rs - opts::Opts::iflag (line 302) ... ok
[INFO] [stdout] test src/io/copy.rs - io::copy::fill_buf_until_match (line 168) ... ok
[INFO] [stdout] test src/opts/number.rs - opts::number::parse (line 10) ... ok
[INFO] [stdout] test src/io/copy.rs - io::copy::fill_buf_to (line 191) ... ok
[INFO] [stdout] test src/opts/mod.rs - opts::keyval (line 328) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.63s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "27be9024c6f1b048f67a46dcbcbb72e5b703b764d0c9ea8508734b0ffbd84711", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27be9024c6f1b048f67a46dcbcbb72e5b703b764d0c9ea8508734b0ffbd84711", kill_on_drop: false }`
[INFO] [stdout] 27be9024c6f1b048f67a46dcbcbb72e5b703b764d0c9ea8508734b0ffbd84711
