[INFO] cloning repository https://github.com/robertdfrench/bignum
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/robertdfrench/bignum" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobertdfrench%2Fbignum", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobertdfrench%2Fbignum'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c90b50b59f58bd1c0619e1485a51054b76391ae9
[INFO] testing robertdfrench/bignum against try#0abe69e6c16114311cc2700e972492e64d69c28f for pr-154065-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobertdfrench%2Fbignum" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/robertdfrench/bignum
[INFO] finished tweaking git repo https://github.com/robertdfrench/bignum
[INFO] tweaked toml for git repo https://github.com/robertdfrench/bignum written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/robertdfrench/bignum on toolchain 0abe69e6c16114311cc2700e972492e64d69c28f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/robertdfrench/bignum already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cdc94195e49112aaaf3ac9ed4577044658b88012d12760c1b85854d4fd66a2ad
[INFO] running `Command { std: "docker" "start" "-a" "cdc94195e49112aaaf3ac9ed4577044658b88012d12760c1b85854d4fd66a2ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cdc94195e49112aaaf3ac9ed4577044658b88012d12760c1b85854d4fd66a2ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdc94195e49112aaaf3ac9ed4577044658b88012d12760c1b85854d4fd66a2ad", kill_on_drop: false }`
[INFO] [stdout] cdc94195e49112aaaf3ac9ed4577044658b88012d12760c1b85854d4fd66a2ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] befad7ca5ae80cc72311af2d8713169163cb9fbb432a94acf030e439e3671b7a
[INFO] running `Command { std: "docker" "start" "-a" "befad7ca5ae80cc72311af2d8713169163cb9fbb432a94acf030e439e3671b7a", kill_on_drop: false }`
[INFO] [stderr]    Compiling bignum v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum `Digit` is never used
[INFO] [stdout]  --> src/digit.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum Digit {
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CarrySum` is never constructed
[INFO] [stdout]   --> src/digit.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub struct CarrySum {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `add_two` are never used
[INFO] [stdout]   --> src/digit.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl CarrySum {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 26 |     fn new(carry: bool, sum: Digit) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |     pub fn add_two(&self, a: Digit, b: Digit) -> Self {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BorrowDifference` is never constructed
[INFO] [stdout]   --> src/digit.rs:54:12
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub struct BorrowDifference {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CarryProduct` is never constructed
[INFO] [stdout]   --> src/digit.rs:82:12
[INFO] [stdout]    |
[INFO] [stdout] 82 | pub struct CarryProduct {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `mul_two` are never used
[INFO] [stdout]   --> src/digit.rs:88:8
[INFO] [stdout]    |
[INFO] [stdout] 87 | impl CarryProduct {
[INFO] [stdout]    | ----------------- associated items in this implementation
[INFO] [stdout] 88 |     fn new(carry: Digit, product: Digit) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 92 |     pub fn mul_two(&self, a: Digit, b: Digit) -> Self {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `as_u8` is never used
[INFO] [stdout]    --> src/digit.rs:142:8
[INFO] [stdout]     |
[INFO] [stdout] 141 | impl Digit {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] 142 |     fn as_u8(&self) -> u8 {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Natural` is never constructed
[INFO] [stdout]  --> src/natural.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Natural {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `zero`, `one`, `increment`, `degree`, `coefficient`, and `set_coefficient` are never used
[INFO] [stdout]   --> src/natural.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 64 | impl Natural {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 65 |     pub fn zero() -> Self {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |     pub fn one() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 73 |     pub fn increment(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 77 |     pub fn degree(&self) -> usize {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 81 |     pub fn coefficient(&self, power: usize) -> digit::Digit {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 89 |     pub fn set_coefficient(&mut self, power: usize, coefficient: digit::Digit) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "befad7ca5ae80cc72311af2d8713169163cb9fbb432a94acf030e439e3671b7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "befad7ca5ae80cc72311af2d8713169163cb9fbb432a94acf030e439e3671b7a", kill_on_drop: false }`
[INFO] [stdout] befad7ca5ae80cc72311af2d8713169163cb9fbb432a94acf030e439e3671b7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 360f55414f2768d655b51a6f3ceba6f6a7819742bf7e2c91019de2aaa51b7c6a
[INFO] running `Command { std: "docker" "start" "-a" "360f55414f2768d655b51a6f3ceba6f6a7819742bf7e2c91019de2aaa51b7c6a", kill_on_drop: false }`
[INFO] [stdout] warning: enum `Digit` is never used
[INFO] [stdout]  --> src/digit.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum Digit {
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CarrySum` is never constructed
[INFO] [stdout]   --> src/digit.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub struct CarrySum {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `add_two` are never used
[INFO] [stdout]   --> src/digit.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl CarrySum {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 26 |     fn new(carry: bool, sum: Digit) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |     pub fn add_two(&self, a: Digit, b: Digit) -> Self {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BorrowDifference` is never constructed
[INFO] [stdout]   --> src/digit.rs:54:12
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub struct BorrowDifference {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CarryProduct` is never constructed
[INFO] [stdout]   --> src/digit.rs:82:12
[INFO] [stdout]    |
[INFO] [stdout] 82 | pub struct CarryProduct {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `mul_two` are never used
[INFO] [stdout]   --> src/digit.rs:88:8
[INFO] [stdout]    |
[INFO] [stdout] 87 | impl CarryProduct {
[INFO] [stdout]    | ----------------- associated items in this implementation
[INFO] [stdout] 88 |     fn new(carry: Digit, product: Digit) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 92 |     pub fn mul_two(&self, a: Digit, b: Digit) -> Self {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `as_u8` is never used
[INFO] [stdout]    --> src/digit.rs:142:8
[INFO] [stdout]     |
[INFO] [stdout] 141 | impl Digit {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] 142 |     fn as_u8(&self) -> u8 {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Natural` is never constructed
[INFO] [stdout]  --> src/natural.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Natural {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `zero`, `one`, `increment`, `degree`, `coefficient`, and `set_coefficient` are never used
[INFO] [stdout]   --> src/natural.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 64 | impl Natural {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 65 |     pub fn zero() -> Self {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |     pub fn one() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 73 |     pub fn increment(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 77 |     pub fn degree(&self) -> usize {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 81 |     pub fn coefficient(&self, power: usize) -> digit::Digit {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 89 |     pub fn set_coefficient(&mut self, power: usize, coefficient: digit::Digit) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling bignum v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `Command { std: "docker" "inspect" "360f55414f2768d655b51a6f3ceba6f6a7819742bf7e2c91019de2aaa51b7c6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "360f55414f2768d655b51a6f3ceba6f6a7819742bf7e2c91019de2aaa51b7c6a", kill_on_drop: false }`
[INFO] [stdout] 360f55414f2768d655b51a6f3ceba6f6a7819742bf7e2c91019de2aaa51b7c6a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2e2ac851b2082502c1105fb4688bd2340f98f164b1b9ca1da2e0676ecb6d79c7
[INFO] running `Command { std: "docker" "start" "-a" "2e2ac851b2082502c1105fb4688bd2340f98f164b1b9ca1da2e0676ecb6d79c7", kill_on_drop: false }`
[INFO] [stderr] warning: enum `Digit` is never used
[INFO] [stderr]  --> src/digit.rs:4:10
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub enum Digit {
[INFO] [stderr]   |          ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `CarrySum` is never constructed
[INFO] [stderr]   --> src/digit.rs:20:12
[INFO] [stderr]    |
[INFO] [stderr] 20 | pub struct CarrySum {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new` and `add_two` are never used
[INFO] [stderr]   --> src/digit.rs:26:8
[INFO] [stderr]    |
[INFO] [stderr] 25 | impl CarrySum {
[INFO] [stderr]    | ------------- associated items in this implementation
[INFO] [stderr] 26 |     fn new(carry: bool, sum: Digit) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 30 |     pub fn add_two(&self, a: Digit, b: Digit) -> Self {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `BorrowDifference` is never constructed
[INFO] [stderr]   --> src/digit.rs:54:12
[INFO] [stderr]    |
[INFO] [stderr] 54 | pub struct BorrowDifference {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `CarryProduct` is never constructed
[INFO] [stderr]   --> src/digit.rs:82:12
[INFO] [stderr]    |
[INFO] [stderr] 82 | pub struct CarryProduct {
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new` and `mul_two` are never used
[INFO] [stderr]   --> src/digit.rs:88:8
[INFO] [stderr]    |
[INFO] [stderr] 87 | impl CarryProduct {
[INFO] [stderr]    | ----------------- associated items in this implementation
[INFO] [stderr] 88 |     fn new(carry: Digit, product: Digit) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 92 |     pub fn mul_two(&self, a: Digit, b: Digit) -> Self {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `as_u8` is never used
[INFO] [stderr]    --> src/digit.rs:142:8
[INFO] [stderr]     |
[INFO] [stderr] 141 | impl Digit {
[INFO] [stderr]     | ---------- method in this implementation
[INFO] [stderr] 142 |     fn as_u8(&self) -> u8 {
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Natural` is never constructed
[INFO] [stderr]  --> src/natural.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct Natural {
[INFO] [stderr]   |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `zero`, `one`, `increment`, `degree`, `coefficient`, and `set_coefficient` are never used
[INFO] [stderr]   --> src/natural.rs:65:12
[INFO] [stderr]    |
[INFO] [stderr] 64 | impl Natural {
[INFO] [stderr]    | ------------ associated items in this implementation
[INFO] [stderr] 65 |     pub fn zero() -> Self {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 69 |     pub fn one() -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 73 |     pub fn increment(&mut self) {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 77 |     pub fn degree(&self) -> usize {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 81 |     pub fn coefficient(&self, power: usize) -> digit::Digit {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 89 |     pub fn set_coefficient(&mut self, power: usize, coefficient: digit::Digit) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `bignum` (lib) generated 9 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/bignum-003c08f5c36b4ae4)
[INFO] [stdout] running 30 tests
[INFO] [stdout] test digit::tests::can_add ... ok
[INFO] [stdout] test digit::tests::can_carry ... ok
[INFO] [stdout] test digit::tests::can_mul1 ... ok
[INFO] [stdout] test digit::tests::can_sub ... ok
[INFO] [stdout] test digit::tests::ordered ... ok
[INFO] [stdout] test digit::tests::can_mul0 ... ok
[INFO] [stdout] test digit::tests::can_mul ... ok
[INFO] [stdout] test digit::tests::parse_00000000 ... ok
[INFO] [stdout] test digit::tests::parse_zero ... ok
[INFO] [stdout] test natural::tests::ack ... ok
[INFO] [stdout] test natural::tests::add ... ok
[INFO] [stdout] test natural::tests::add_large ... ok
[INFO] [stdout] test natural::tests::degree ... ok
[INFO] [stdout] test natural::tests::div ... ok
[INFO] [stdout] test natural::tests::div3 ... ok
[INFO] [stdout] test natural::tests::equal ... ok
[INFO] [stdout] test natural::tests::mul ... ok
[INFO] [stdout] test natural::tests::ordered_large ... ok
[INFO] [stdout] test natural::tests::mul_symmetric ... ok
[INFO] [stdout] test natural::tests::increment ... ok
[INFO] [stdout] test natural::tests::mul_80bit ... ok
[INFO] [stdout] test natural::tests::rem ... ok
[INFO] [stdout] test natural::tests::ordered_tiny ... ok
[INFO] [stdout] test natural::tests::rem_large ... ok
[INFO] [stdout] test natural::tests::subtract ... ok
[INFO] [stdout] test natural::tests::unequal ... ok
[INFO] [stdout] test natural::tests::coefficient ... ok
[INFO] [stdout] test natural::tests::div2 ... ok
[INFO] [stdout] test digit::tests::can_mul_carry ... ok
[INFO] [stdout] test natural::tests::ordered_small ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 30 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/bignum-348b8c76b94755cf)
[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]    Doc-tests bignum
[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" "2e2ac851b2082502c1105fb4688bd2340f98f164b1b9ca1da2e0676ecb6d79c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e2ac851b2082502c1105fb4688bd2340f98f164b1b9ca1da2e0676ecb6d79c7", kill_on_drop: false }`
[INFO] [stdout] 2e2ac851b2082502c1105fb4688bd2340f98f164b1b9ca1da2e0676ecb6d79c7
