[INFO] cloning repository https://github.com/Starfunk/largeint
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Starfunk/largeint" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStarfunk%2Flargeint", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStarfunk%2Flargeint'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6e754bf4687da6703d77a8fc34034c85c1582bd3
[INFO] testing Starfunk/largeint against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStarfunk%2Flargeint" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Starfunk/largeint on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Starfunk/largeint
[INFO] finished tweaking git repo https://github.com/Starfunk/largeint
[INFO] tweaked toml for git repo https://github.com/Starfunk/largeint written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/Starfunk/largeint already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9f8df5c10e09b87904f520a02370820242ba038de4c9b3e3b9180d0cd967cec3
[INFO] running `Command { std: "docker" "start" "-a" "9f8df5c10e09b87904f520a02370820242ba038de4c9b3e3b9180d0cd967cec3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9f8df5c10e09b87904f520a02370820242ba038de4c9b3e3b9180d0cd967cec3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f8df5c10e09b87904f520a02370820242ba038de4c9b3e3b9180d0cd967cec3", kill_on_drop: false }`
[INFO] [stdout] 9f8df5c10e09b87904f520a02370820242ba038de4c9b3e3b9180d0cd967cec3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f259720f0d0ba044ff304e9fe64d3465f9ec4bc9efc4cde85bba0c8565595468
[INFO] running `Command { std: "docker" "start" "-a" "f259720f0d0ba044ff304e9fe64d3465f9ec4bc9efc4cde85bba0c8565595468", kill_on_drop: false }`
[INFO] [stderr]    Compiling largeint v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/multiplication.rs:46:11
[INFO] [stdout]    |
[INFO] [stdout] 46 |         10...19 => vec![1, num - 10],
[INFO] [stdout]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/multiplication.rs:47:11
[INFO] [stdout]    |
[INFO] [stdout] 47 |         20...29 => vec![2, num - 20],
[INFO] [stdout]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/multiplication.rs:48:11
[INFO] [stdout]    |
[INFO] [stdout] 48 |         30...39 => vec![3, num - 30],
[INFO] [stdout]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/multiplication.rs:49:11
[INFO] [stdout]    |
[INFO] [stdout] 49 |         40...49 => vec![4, num - 40],
[INFO] [stdout]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/multiplication.rs:50:11
[INFO] [stdout]    |
[INFO] [stdout] 50 |         50...59 => vec![5, num - 50],
[INFO] [stdout]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/multiplication.rs:51:11
[INFO] [stdout]    |
[INFO] [stdout] 51 |         60...69 => vec![6, num - 60],
[INFO] [stdout]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/multiplication.rs:52:11
[INFO] [stdout]    |
[INFO] [stdout] 52 |         70...79 => vec![7, num - 70],
[INFO] [stdout]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/multiplication.rs:53:11
[INFO] [stdout]    |
[INFO] [stdout] 53 |         80...89 => vec![8, num - 80],
[INFO] [stdout]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::trim_left_matches`: superseded by `trim_start_matches`
[INFO] [stdout]   --> src/difference.rs:49:46
[INFO] [stdout]    |
[INFO] [stdout] 49 |         output_str = String::from(output_str.trim_left_matches("0"));
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start_matches`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::trim_left_matches`: superseded by `trim_start_matches`
[INFO] [stdout]   --> src/difference.rs:69:54
[INFO] [stdout]    |
[INFO] [stdout] 69 |                 output_str = String::from(output_str.trim_left_matches("0"));
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start_matches`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/division.rs:85:21
[INFO] [stdout]    |
[INFO] [stdout] 85 |                 let mut remainder_largeint = new(remainder_str.clone(), sign);
[INFO] [stdout]    |                     ----^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "f259720f0d0ba044ff304e9fe64d3465f9ec4bc9efc4cde85bba0c8565595468", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f259720f0d0ba044ff304e9fe64d3465f9ec4bc9efc4cde85bba0c8565595468", kill_on_drop: false }`
[INFO] [stdout] f259720f0d0ba044ff304e9fe64d3465f9ec4bc9efc4cde85bba0c8565595468
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9288379e0d585bdc22eca7764f84fe1b589a1cb5fbd9c845cce8df0bb52fd299
[INFO] running `Command { std: "docker" "start" "-a" "9288379e0d585bdc22eca7764f84fe1b589a1cb5fbd9c845cce8df0bb52fd299", kill_on_drop: false }`
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/multiplication.rs:46:11
[INFO] [stdout]    |
[INFO] [stdout] 46 |         10...19 => vec![1, num - 10],
[INFO] [stdout]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling largeint v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/multiplication.rs:47:11
[INFO] [stdout]    |
[INFO] [stdout] 47 |         20...29 => vec![2, num - 20],
[INFO] [stdout]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/multiplication.rs:48:11
[INFO] [stdout]    |
[INFO] [stdout] 48 |         30...39 => vec![3, num - 30],
[INFO] [stdout]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/multiplication.rs:49:11
[INFO] [stdout]    |
[INFO] [stdout] 49 |         40...49 => vec![4, num - 40],
[INFO] [stdout]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/multiplication.rs:50:11
[INFO] [stdout]    |
[INFO] [stdout] 50 |         50...59 => vec![5, num - 50],
[INFO] [stdout]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/multiplication.rs:51:11
[INFO] [stdout]    |
[INFO] [stdout] 51 |         60...69 => vec![6, num - 60],
[INFO] [stdout]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/multiplication.rs:52:11
[INFO] [stdout]    |
[INFO] [stdout] 52 |         70...79 => vec![7, num - 70],
[INFO] [stdout]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/multiplication.rs:53:11
[INFO] [stdout]    |
[INFO] [stdout] 53 |         80...89 => vec![8, num - 80],
[INFO] [stdout]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::trim_left_matches`: superseded by `trim_start_matches`
[INFO] [stdout]   --> src/difference.rs:49:46
[INFO] [stdout]    |
[INFO] [stdout] 49 |         output_str = String::from(output_str.trim_left_matches("0"));
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start_matches`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::trim_left_matches`: superseded by `trim_start_matches`
[INFO] [stdout]   --> src/difference.rs:69:54
[INFO] [stdout]    |
[INFO] [stdout] 69 |                 output_str = String::from(output_str.trim_left_matches("0"));
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start_matches`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/division.rs:85:21
[INFO] [stdout]    |
[INFO] [stdout] 85 |                 let mut remainder_largeint = new(remainder_str.clone(), sign);
[INFO] [stdout]    |                     ----^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/multiplication.rs:46:11
[INFO] [stdout]    |
[INFO] [stdout] 46 |         10...19 => vec![1, num - 10],
[INFO] [stdout]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/multiplication.rs:47:11
[INFO] [stdout]    |
[INFO] [stdout] 47 |         20...29 => vec![2, num - 20],
[INFO] [stdout]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/multiplication.rs:48:11
[INFO] [stdout]    |
[INFO] [stdout] 48 |         30...39 => vec![3, num - 30],
[INFO] [stdout]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/multiplication.rs:49:11
[INFO] [stdout]    |
[INFO] [stdout] 49 |         40...49 => vec![4, num - 40],
[INFO] [stdout]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/multiplication.rs:50:11
[INFO] [stdout]    |
[INFO] [stdout] 50 |         50...59 => vec![5, num - 50],
[INFO] [stdout]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/multiplication.rs:51:11
[INFO] [stdout]    |
[INFO] [stdout] 51 |         60...69 => vec![6, num - 60],
[INFO] [stdout]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/multiplication.rs:52:11
[INFO] [stdout]    |
[INFO] [stdout] 52 |         70...79 => vec![7, num - 70],
[INFO] [stdout]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/multiplication.rs:53:11
[INFO] [stdout]    |
[INFO] [stdout] 53 |         80...89 => vec![8, num - 80],
[INFO] [stdout]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::trim_left_matches`: superseded by `trim_start_matches`
[INFO] [stdout]   --> src/difference.rs:49:46
[INFO] [stdout]    |
[INFO] [stdout] 49 |         output_str = String::from(output_str.trim_left_matches("0"));
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start_matches`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::trim_left_matches`: superseded by `trim_start_matches`
[INFO] [stdout]   --> src/difference.rs:69:54
[INFO] [stdout]    |
[INFO] [stdout] 69 |                 output_str = String::from(output_str.trim_left_matches("0"));
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start_matches`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/division.rs:85:21
[INFO] [stdout]    |
[INFO] [stdout] 85 |                 let mut remainder_largeint = new(remainder_str.clone(), sign);
[INFO] [stdout]    |                     ----^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `Command { std: "docker" "inspect" "9288379e0d585bdc22eca7764f84fe1b589a1cb5fbd9c845cce8df0bb52fd299", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9288379e0d585bdc22eca7764f84fe1b589a1cb5fbd9c845cce8df0bb52fd299", kill_on_drop: false }`
[INFO] [stdout] 9288379e0d585bdc22eca7764f84fe1b589a1cb5fbd9c845cce8df0bb52fd299
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a27f697777b694a12acb40505adbbabfdfa29b078ef154abdca2ac2e878a8b74
[INFO] running `Command { std: "docker" "start" "-a" "a27f697777b694a12acb40505adbbabfdfa29b078ef154abdca2ac2e878a8b74", kill_on_drop: false }`
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/multiplication.rs:46:11
[INFO] [stderr]    |
[INFO] [stderr] 46 |         10...19 => vec![1, num - 10],
[INFO] [stderr]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/multiplication.rs:47:11
[INFO] [stderr]    |
[INFO] [stderr] 47 |         20...29 => vec![2, num - 20],
[INFO] [stderr]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/multiplication.rs:48:11
[INFO] [stderr]    |
[INFO] [stderr] 48 |         30...39 => vec![3, num - 30],
[INFO] [stderr]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/multiplication.rs:49:11
[INFO] [stderr]    |
[INFO] [stderr] 49 |         40...49 => vec![4, num - 40],
[INFO] [stderr]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/multiplication.rs:50:11
[INFO] [stderr]    |
[INFO] [stderr] 50 |         50...59 => vec![5, num - 50],
[INFO] [stderr]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/multiplication.rs:51:11
[INFO] [stderr]    |
[INFO] [stderr] 51 |         60...69 => vec![6, num - 60],
[INFO] [stderr]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/multiplication.rs:52:11
[INFO] [stderr]    |
[INFO] [stderr] 52 |         70...79 => vec![7, num - 70],
[INFO] [stderr]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/multiplication.rs:53:11
[INFO] [stderr]    |
[INFO] [stderr] 53 |         80...89 => vec![8, num - 80],
[INFO] [stderr]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `core::str::<impl str>::trim_left_matches`: superseded by `trim_start_matches`
[INFO] [stderr]   --> src/difference.rs:49:46
[INFO] [stderr]    |
[INFO] [stderr] 49 |         output_str = String::from(output_str.trim_left_matches("0"));
[INFO] [stderr]    |                                              ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start_matches`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `core::str::<impl str>::trim_left_matches`: superseded by `trim_start_matches`
[INFO] [stderr]   --> src/difference.rs:69:54
[INFO] [stderr]    |
[INFO] [stderr] 69 |                 output_str = String::from(output_str.trim_left_matches("0"));
[INFO] [stderr]    |                                                      ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start_matches`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/division.rs:85:21
[INFO] [stderr]    |
[INFO] [stderr] 85 |                 let mut remainder_largeint = new(remainder_str.clone(), sign);
[INFO] [stderr]    |                     ----^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `largeint` (lib) generated 11 warnings
[INFO] [stderr] warning: `largeint` (lib test) generated 11 warnings (11 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/largeint-2eaef0857a7128eb)
[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] [stderr]      Running tests/test_integration.rs (/opt/rustwide/target/debug/deps/test_integration-928061586a64c708)
[INFO] [stdout] 
[INFO] [stdout] running 47 tests
[INFO] [stdout] test tests::negative_negative_add_same_length ... ok
[INFO] [stdout] test tests::negative_negative_add_not_same_length ... ok
[INFO] [stdout] test tests::negative_negative_mul ... ok
[INFO] [stdout] test tests::negative_negative_sub_same_length ... ok
[INFO] [stdout] test tests::negative_negative_sub_same_not_length ... ok
[INFO] [stdout] test tests::negative_negative_div ... ok
[INFO] [stdout] test tests::negative_negative_rem ... ok
[INFO] [stdout] test tests::negative_positive_rem ... ok
[INFO] [stdout] test tests::negative_unsigned_add ... ok
[INFO] [stdout] test tests::negative_positive_sub_not_same_length ... ok
[INFO] [stdout] test tests::negative_positive_sub_same_length ... ok
[INFO] [stdout] test tests::positive_negative_add_equal ... ok
[INFO] [stdout] test tests::negative_unsigned_sub ... ok
[INFO] [stdout] test tests::positive_negative_add_same_length ... ok
[INFO] [stdout] test tests::positive_negative_add_not_same_length ... ok
[INFO] [stdout] test tests::positive_negative_mul ... ok
[INFO] [stdout] test tests::positive_negative_sub_not_same_length ... ok
[INFO] [stdout] test tests::positive_negative_sub_same_length ... ok
[INFO] [stdout] test tests::positive_positive_add_not_same_length ... ok
[INFO] [stdout] test tests::positive_positive_add_same_length ... ok
[INFO] [stdout] test tests::positive_positive_div_3 ... ok
[INFO] [stdout] test tests::positive_positive_div_2 ... ok
[INFO] [stdout] test tests::positive_positive_mul ... ok
[INFO] [stdout] test tests::positive_positive_mul_length_1 ... ok
[INFO] [stdout] test tests::positive_positive_rem_3 ... ok
[INFO] [stdout] test tests::positive_positive_rem_2 ... ok
[INFO] [stdout] test tests::positive_positive_sub_same_length ... ok
[INFO] [stdout] test tests::positive_unsigned_add ... ok
[INFO] [stdout] test tests::positive_positive_sub_same_not_length ... ok
[INFO] [stdout] test tests::positive_unsigned_sub ... ok
[INFO] [stdout] test tests::unsigned_negative_div ... ok
[INFO] [stdout] test tests::unsigned_negative_sub ... ok
[INFO] [stdout] test tests::unsigned_positive_mul ... ok
[INFO] [stdout] test tests::unsigned_negative_rem ... ok
[INFO] [stdout] test tests::unsigned_positive_sub ... ok
[INFO] [stdout] test tests::positive_positive_div_1 ... ok
[INFO] [stdout] test tests::unsigned_unsigned_add ... ok
[INFO] [stdout] test tests::unsigned_unsigned_mul ... ok
[INFO] [stdout] test tests::positive_positive_rem_1 ... ok
[INFO] [stdout] test tests::positive_negative_rem ... ok
[INFO] [stdout] test tests::unsigned_unsigned_sub ... ok
[INFO] [stdout] test tests::negative_positive_div ... ok
[INFO] [stdout] test tests::positive_negative_div ... ok
[INFO] [stdout] test tests::positive_unsigned_div - should panic ... ok
[INFO] [stdout] test tests::positive_unsigned_rem - should panic ... ok
[INFO] [stdout] test tests::unsigned_unsigned_div - should panic ... ok
[INFO] [stdout] test tests::unsigned_unsigned_rem - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 47 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests largeint
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> /opt/rustwide/workdir/src/multiplication.rs:46:11
[INFO] [stderr]    |
[INFO] [stderr] 46 |         10...19 => vec![1, num - 10],
[INFO] [stderr]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> /opt/rustwide/workdir/src/multiplication.rs:47:11
[INFO] [stderr]    |
[INFO] [stderr] 47 |         20...29 => vec![2, num - 20],
[INFO] [stderr]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> /opt/rustwide/workdir/src/multiplication.rs:48:11
[INFO] [stderr]    |
[INFO] [stderr] 48 |         30...39 => vec![3, num - 30],
[INFO] [stderr]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> /opt/rustwide/workdir/src/multiplication.rs:49:11
[INFO] [stderr]    |
[INFO] [stderr] 49 |         40...49 => vec![4, num - 40],
[INFO] [stderr]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> /opt/rustwide/workdir/src/multiplication.rs:50:11
[INFO] [stderr]    |
[INFO] [stderr] 50 |         50...59 => vec![5, num - 50],
[INFO] [stderr]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> /opt/rustwide/workdir/src/multiplication.rs:51:11
[INFO] [stderr]    |
[INFO] [stderr] 51 |         60...69 => vec![6, num - 60],
[INFO] [stderr]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> /opt/rustwide/workdir/src/multiplication.rs:52:11
[INFO] [stderr]    |
[INFO] [stderr] 52 |         70...79 => vec![7, num - 70],
[INFO] [stderr]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> /opt/rustwide/workdir/src/multiplication.rs:53:11
[INFO] [stderr]    |
[INFO] [stderr] 53 |         80...89 => vec![8, num - 80],
[INFO] [stderr]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/lib.rs - largeint::LargeInt::compare (line 77) ... ok
[INFO] [stdout] test src/lib.rs - largeint::LargeInt::add (line 119) ... ok
[INFO] [stdout] test src/lib.rs - largeint::LargeInt::sub (line 208) ... ok
[INFO] [stdout] test src/lib.rs - largeint::LargeInt::rem (line 386) ... ok
[INFO] [stdout] test src/lib.rs - largeint::LargeInt::mul (line 295) ... ok
[INFO] [stdout] test src/lib.rs - largeint::LargeInt::div (line 334) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.21s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a27f697777b694a12acb40505adbbabfdfa29b078ef154abdca2ac2e878a8b74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a27f697777b694a12acb40505adbbabfdfa29b078ef154abdca2ac2e878a8b74", kill_on_drop: false }`
[INFO] [stdout] a27f697777b694a12acb40505adbbabfdfa29b078ef154abdca2ac2e878a8b74