[INFO] fetching crate flexint 0.1.0...
[INFO] testing flexint-0.1.0 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate flexint 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate flexint 0.1.0
[INFO] finished tweaking crates.io crate flexint 0.1.0
[INFO] tweaked toml for crates.io crate flexint 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate flexint 0.1.0 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 107 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.5.1 (available: v0.7.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded trait-tactics-macros v0.1.0
[INFO] [stderr]   Downloaded trait-tactics v0.1.0
[INFO] [stderr]   Downloaded schemars v1.1.0
[INFO] [stderr]   Downloaded serde_with_macros v3.15.1
[INFO] [stderr]   Downloaded serde_with v3.15.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5e745fb295f45ec40ddf2688623b33f0b1ebcb41194a8dcebb01b58b1fa17a44
[INFO] running `Command { std: "docker" "start" "-a" "5e745fb295f45ec40ddf2688623b33f0b1ebcb41194a8dcebb01b58b1fa17a44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e745fb295f45ec40ddf2688623b33f0b1ebcb41194a8dcebb01b58b1fa17a44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e745fb295f45ec40ddf2688623b33f0b1ebcb41194a8dcebb01b58b1fa17a44", kill_on_drop: false }`
[INFO] [stdout] 5e745fb295f45ec40ddf2688623b33f0b1ebcb41194a8dcebb01b58b1fa17a44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1a97871425453ccc87be4c80a5f38a7f8e010279a2452b8cd1001f172fef7cf0
[INFO] running `Command { std: "docker" "start" "-a" "1a97871425453ccc87be4c80a5f38a7f8e010279a2452b8cd1001f172fef7cf0", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling trait-tactics-macros v0.1.0
[INFO] [stderr]    Compiling trait-tactics v0.1.0
[INFO] [stderr]    Compiling flexint v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/lib.rs:255:24
[INFO] [stdout]     |
[INFO] [stdout] 255 |                       if let Ok(n) = <$Small>::try_from(n) {
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 505 | / flex_type!(
[INFO] [stdout] 506 | |     FlexUint, u64, BigUint,
[INFO] [stdout] 507 | |     desc = "unsigned",
[INFO] [stdout] 508 | |     from = [u8 u16 u32 u128 usize],
[INFO] [stdout] 509 | |     try_from = [i8 i16 i32 i64 i128 isize],
[INFO] [stdout] 510 | |     cmp_small_big = |_| Ordering::Greater,
[INFO] [stdout] 511 | | );
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `flex_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/lib.rs:255:24
[INFO] [stdout]     |
[INFO] [stdout] 255 |                       if let Ok(n) = <$Small>::try_from(n) {
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 513 | / flex_type!(
[INFO] [stdout] 514 | |     FlexInt, i64, BigInt,
[INFO] [stdout] 515 | |     desc = "signed",
[INFO] [stdout] 516 | |     from = [u8 u16 u32 u64 u128 usize i8 i16 i32 i128 isize],
[INFO] [stdout] 517 | |     try_from = [],
[INFO] [stdout] 518 | |     cmp_small_big = |big| Sign::NoSign.cmp(&big.sign()),
[INFO] [stdout] 519 | | );
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: this warning originates in the macro `flex_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.49s
[INFO] running `Command { std: "docker" "inspect" "1a97871425453ccc87be4c80a5f38a7f8e010279a2452b8cd1001f172fef7cf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a97871425453ccc87be4c80a5f38a7f8e010279a2452b8cd1001f172fef7cf0", kill_on_drop: false }`
[INFO] [stdout] 1a97871425453ccc87be4c80a5f38a7f8e010279a2452b8cd1001f172fef7cf0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f226eda004724c49ff3b4d4a9971e21b3f4b3c7598c759190544406da0605f9b
[INFO] running `Command { std: "docker" "start" "-a" "f226eda004724c49ff3b4d4a9971e21b3f4b3c7598c759190544406da0605f9b", kill_on_drop: false }`
[INFO] [stderr]    Compiling zerocopy v0.8.27
[INFO] [stderr]    Compiling rayon-core v1.13.0
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]    Compiling zerocopy-derive v0.8.27
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling ciborium-io v0.2.2
[INFO] [stderr]    Compiling anstyle v1.0.13
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling regex-syntax v0.8.8
[INFO] [stderr]    Compiling clap_lex v0.7.6
[INFO] [stderr]    Compiling plotters-backend v0.3.7
[INFO] [stderr]    Compiling clap_builder v4.5.51
[INFO] [stderr]    Compiling plotters-svg v0.3.7
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling cast v0.3.0
[INFO] [stderr]    Compiling criterion-plot v0.5.0
[INFO] [stderr]    Compiling rayon v1.11.0
[INFO] [stderr]    Compiling regex-automata v0.4.13
[INFO] [stderr]    Compiling trait-tactics-macros v0.1.0
[INFO] [stderr]    Compiling trait-tactics v0.1.0
[INFO] [stderr]    Compiling is-terminal v0.4.17
[INFO] [stderr]    Compiling plotters v0.3.7
[INFO] [stderr]    Compiling clap v4.5.51
[INFO] [stderr]    Compiling oorandom v11.1.5
[INFO] [stderr]    Compiling anes v0.1.6
[INFO] [stderr]    Compiling flexint v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/lib.rs:255:24
[INFO] [stdout]     |
[INFO] [stdout] 255 |                       if let Ok(n) = <$Small>::try_from(n) {
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 505 | / flex_type!(
[INFO] [stdout] 506 | |     FlexUint, u64, BigUint,
[INFO] [stdout] 507 | |     desc = "unsigned",
[INFO] [stdout] 508 | |     from = [u8 u16 u32 u128 usize],
[INFO] [stdout] 509 | |     try_from = [i8 i16 i32 i64 i128 isize],
[INFO] [stdout] 510 | |     cmp_small_big = |_| Ordering::Greater,
[INFO] [stdout] 511 | | );
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `flex_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/lib.rs:255:24
[INFO] [stdout]     |
[INFO] [stdout] 255 |                       if let Ok(n) = <$Small>::try_from(n) {
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 513 | / flex_type!(
[INFO] [stdout] 514 | |     FlexInt, i64, BigInt,
[INFO] [stdout] 515 | |     desc = "signed",
[INFO] [stdout] 516 | |     from = [u8 u16 u32 u64 u128 usize i8 i16 i32 i128 isize],
[INFO] [stdout] 517 | |     try_from = [],
[INFO] [stdout] 518 | |     cmp_small_big = |big| Sign::NoSign.cmp(&big.sign()),
[INFO] [stdout] 519 | | );
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: this warning originates in the macro `flex_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling half v2.7.1
[INFO] [stderr]    Compiling regex v1.12.2
[INFO] [stderr]    Compiling ciborium-ll v0.2.2
[INFO] [stderr]    Compiling ciborium v0.2.2
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling criterion v0.5.1
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/lib.rs:255:24
[INFO] [stdout]     |
[INFO] [stdout] 255 |                       if let Ok(n) = <$Small>::try_from(n) {
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 505 | / flex_type!(
[INFO] [stdout] 506 | |     FlexUint, u64, BigUint,
[INFO] [stdout] 507 | |     desc = "unsigned",
[INFO] [stdout] 508 | |     from = [u8 u16 u32 u128 usize],
[INFO] [stdout] 509 | |     try_from = [i8 i16 i32 i64 i128 isize],
[INFO] [stdout] 510 | |     cmp_small_big = |_| Ordering::Greater,
[INFO] [stdout] 511 | | );
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `flex_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/lib.rs:255:24
[INFO] [stdout]     |
[INFO] [stdout] 255 |                       if let Ok(n) = <$Small>::try_from(n) {
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 513 | / flex_type!(
[INFO] [stdout] 514 | |     FlexInt, i64, BigInt,
[INFO] [stdout] 515 | |     desc = "signed",
[INFO] [stdout] 516 | |     from = [u8 u16 u32 u64 u128 usize i8 i16 i32 i128 isize],
[INFO] [stdout] 517 | |     try_from = [],
[INFO] [stdout] 518 | |     cmp_small_big = |big| Sign::NoSign.cmp(&big.sign()),
[INFO] [stdout] 519 | | );
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: this warning originates in the macro `flex_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 43.61s
[INFO] running `Command { std: "docker" "inspect" "f226eda004724c49ff3b4d4a9971e21b3f4b3c7598c759190544406da0605f9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f226eda004724c49ff3b4d4a9971e21b3f4b3c7598c759190544406da0605f9b", kill_on_drop: false }`
[INFO] [stdout] f226eda004724c49ff3b4d4a9971e21b3f4b3c7598c759190544406da0605f9b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 048b36b7c0b4a432a95985ff125b53fd8ed953b56e4ad72ee94f6c25f6e47897
[INFO] running `Command { std: "docker" "start" "-a" "048b36b7c0b4a432a95985ff125b53fd8ed953b56e4ad72ee94f6c25f6e47897", kill_on_drop: false }`
[INFO] [stderr] warning: irrefutable `if let` pattern
[INFO] [stderr]    --> src/lib.rs:255:24
[INFO] [stderr]     |
[INFO] [stderr] 255 |                       if let Ok(n) = <$Small>::try_from(n) {
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 505 | / flex_type!(
[INFO] [stderr] 506 | |     FlexUint, u64, BigUint,
[INFO] [stderr] 507 | |     desc = "unsigned",
[INFO] [stderr] 508 | |     from = [u8 u16 u32 u128 usize],
[INFO] [stderr] 509 | |     try_from = [i8 i16 i32 i64 i128 isize],
[INFO] [stderr] 510 | |     cmp_small_big = |_| Ordering::Greater,
[INFO] [stderr] 511 | | );
[INFO] [stderr]     | |_- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stderr]     = help: consider replacing the `if let` with a `let`
[INFO] [stderr]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stderr]     = note: this warning originates in the macro `flex_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: irrefutable `if let` pattern
[INFO] [stderr]    --> src/lib.rs:255:24
[INFO] [stderr]     |
[INFO] [stderr] 255 |                       if let Ok(n) = <$Small>::try_from(n) {
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 513 | / flex_type!(
[INFO] [stderr] 514 | |     FlexInt, i64, BigInt,
[INFO] [stderr] 515 | |     desc = "signed",
[INFO] [stderr] 516 | |     from = [u8 u16 u32 u64 u128 usize i8 i16 i32 i128 isize],
[INFO] [stderr] 517 | |     try_from = [],
[INFO] [stderr] 518 | |     cmp_small_big = |big| Sign::NoSign.cmp(&big.sign()),
[INFO] [stderr] 519 | | );
[INFO] [stderr]     | |_- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stderr]     = help: consider replacing the `if let` with a `let`
[INFO] [stderr]     = note: this warning originates in the macro `flex_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `flexint` (lib) generated 2 warnings
[INFO] [stderr] warning: `flexint` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/flexint-4b1625ed98f3230c)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_checked_pow ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests flexint
[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" "048b36b7c0b4a432a95985ff125b53fd8ed953b56e4ad72ee94f6c25f6e47897", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "048b36b7c0b4a432a95985ff125b53fd8ed953b56e4ad72ee94f6c25f6e47897", kill_on_drop: false }`
[INFO] [stdout] 048b36b7c0b4a432a95985ff125b53fd8ed953b56e4ad72ee94f6c25f6e47897
