[INFO] fetching crate flexint 0.1.0...
[INFO] checking flexint-0.1.0 against master#642c19bfc3a5c1de985bf5d0cc8207ac9d22708a for pr-148577
[INFO] extracting crate flexint 0.1.0 into /workspace/builds/worker-5-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-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate flexint 0.1.0 on toolchain 642c19bfc3a5c1de985bf5d0cc8207ac9d22708a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded trait-tactics-macros v0.1.0
[INFO] [stderr]   Downloaded trait-tactics v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 925234b061219105dae80ac6edc6d9f0c3dee9ed12188d547340c4f099f4b651
[INFO] running `Command { std: "docker" "start" "-a" "925234b061219105dae80ac6edc6d9f0c3dee9ed12188d547340c4f099f4b651", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "925234b061219105dae80ac6edc6d9f0c3dee9ed12188d547340c4f099f4b651", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "925234b061219105dae80ac6edc6d9f0c3dee9ed12188d547340c4f099f4b651", kill_on_drop: false }`
[INFO] [stdout] 925234b061219105dae80ac6edc6d9f0c3dee9ed12188d547340c4f099f4b651
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c3649e174dba5d6bcc084b7a56e1c97d63ba80b1fdacd714c81957e3c117a87
[INFO] running `Command { std: "docker" "start" "-a" "3c3649e174dba5d6bcc084b7a56e1c97d63ba80b1fdacd714c81957e3c117a87", kill_on_drop: false }`
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]     Checking plotters v0.3.7
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking criterion v0.5.1
[INFO] [stderr]    Compiling trait-tactics-macros v0.1.0
[INFO] [stderr]     Checking trait-tactics v0.1.0
[INFO] [stderr]     Checking 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] [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 4.03s
[INFO] running `Command { std: "docker" "inspect" "3c3649e174dba5d6bcc084b7a56e1c97d63ba80b1fdacd714c81957e3c117a87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c3649e174dba5d6bcc084b7a56e1c97d63ba80b1fdacd714c81957e3c117a87", kill_on_drop: false }`
[INFO] [stdout] 3c3649e174dba5d6bcc084b7a56e1c97d63ba80b1fdacd714c81957e3c117a87