[INFO] fetching crate twibint 0.3.2...
[INFO] checking twibint-0.3.2 against master#642c19bfc3a5c1de985bf5d0cc8207ac9d22708a for pr-148577
[INFO] extracting crate twibint 0.3.2 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate twibint 0.3.2
[INFO] finished tweaking crates.io crate twibint 0.3.2
[INFO] tweaked toml for crates.io crate twibint 0.3.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate twibint 0.3.2 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] crate crates.io crate twibint 0.3.2 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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unindent v0.1.11
[INFO] [stderr]   Downloaded pyo3-macros v0.19.2
[INFO] [stderr]   Downloaded target-lexicon v0.12.11
[INFO] [stderr]   Downloaded pyo3-macros-backend v0.19.2
[INFO] [stderr]   Downloaded pyo3-ffi v0.19.2
[INFO] [stderr]   Downloaded pyo3-build-config v0.19.2
[INFO] [stderr]   Downloaded pyo3 v0.19.2
[INFO] [stderr]   Downloaded typed_test_gen v0.1.2
[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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5cd6b37f27e59edffc19e89ab44913045ae4818d0d4b80173c96daf3042ec12c
[INFO] running `Command { std: "docker" "start" "-a" "5cd6b37f27e59edffc19e89ab44913045ae4818d0d4b80173c96daf3042ec12c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5cd6b37f27e59edffc19e89ab44913045ae4818d0d4b80173c96daf3042ec12c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cd6b37f27e59edffc19e89ab44913045ae4818d0d4b80173c96daf3042ec12c", kill_on_drop: false }`
[INFO] [stdout] 5cd6b37f27e59edffc19e89ab44913045ae4818d0d4b80173c96daf3042ec12c
[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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85202b551d58c69bd60302597d0726be8a8b92a7f40d534921758cff14c2be72
[INFO] running `Command { std: "docker" "start" "-a" "85202b551d58c69bd60302597d0726be8a8b92a7f40d534921758cff14c2be72", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]     Checking twibint v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stdout] warning: associated constants `MAX` and `HALF_MAX` are never used
[INFO] [stdout]    --> src/traits/digit.rs:124:11
[INFO] [stdout]     |
[INFO] [stdout] 108 | pub trait DoubleDigit:
[INFO] [stdout]     |           ----------- associated constants in this trait
[INFO] [stdout] ...
[INFO] [stdout] 124 |     const MAX: Self;
[INFO] [stdout]     |           ^^^
[INFO] [stdout] 125 |     const HALF_MAX: Self;
[INFO] [stdout]     |           ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling syn v2.0.31
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]    Compiling typed_test_gen v0.1.2
[INFO] [stdout] warning: enum `Quotient3By2` is never used
[INFO] [stdout]   --> src/biguint/ops/algorithms/div/burnikel_ziegler.rs:18:6
[INFO] [stdout]    |
[INFO] [stdout] 18 | enum Quotient3By2<T: 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: enum `Quotient4By2` is never used
[INFO] [stdout]   --> src/biguint/ops/algorithms/div/burnikel_ziegler.rs:26:6
[INFO] [stdout]    |
[INFO] [stdout] 26 | enum Quotient4By2<T: Digit> {
[INFO] [stdout]    |      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `dec` and `mul` are never used
[INFO] [stdout]   --> src/biguint/ops/algorithms/div/burnikel_ziegler.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl<T: Digit> Quotient3By2<T> {
[INFO] [stdout]    | ------------------------------ methods in this implementation
[INFO] [stdout] 33 |     fn dec(&mut self) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |     fn mul(&self, a: &[T; 2], ret: &mut [T; 4]) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `pack` is never used
[INFO] [stdout]   --> src/biguint/ops/algorithms/div/burnikel_ziegler.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | impl<T: Digit> Quotient4By2<T> {
[INFO] [stdout]    | ------------------------------ associated function in this implementation
[INFO] [stdout] 52 |     fn pack(lsb: Quotient3By2<T>, msb: Quotient3By2<T>) -> Self {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `div_3s_by_2s` is never used
[INFO] [stdout]    --> src/biguint/ops/algorithms/div/burnikel_ziegler.rs:111:4
[INFO] [stdout]     |
[INFO] [stdout] 111 | fn div_3s_by_2s<T: Digit>(a: &[T; 3], b: &[T; 2], r: &mut [T; 4]) -> Quotient3By2<T> {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `div_4s_by_2s` is never used
[INFO] [stdout]    --> src/biguint/ops/algorithms/div/burnikel_ziegler.rs:141:4
[INFO] [stdout]     |
[INFO] [stdout] 141 | fn div_4s_by_2s<T: Digit>(
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `div` is never used
[INFO] [stdout]    --> src/biguint/ops/algorithms/div/burnikel_ziegler.rs:316:4
[INFO] [stdout]     |
[INFO] [stdout] 316 | fn div<T: Digit>(n: &BigUint<T>, d: &BigUint<T>) -> DivisionResult<BigUint<T>> {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `div` is never used
[INFO] [stdout]    --> src/biguint/ops/algorithms/div/newton_raphson.rs:160:4
[INFO] [stdout]     |
[INFO] [stdout] 160 | fn div<T: Digit>(n: &BigUint<T>, d: &BigUint<T>) -> DivisionResult<BigUint<T>> {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `MAX`, `HALF_MAX`, and `pack` are never used
[INFO] [stdout]    --> src/traits/digit.rs:124:11
[INFO] [stdout]     |
[INFO] [stdout] 108 | pub trait DoubleDigit:
[INFO] [stdout]     |           ----------- associated items in this trait
[INFO] [stdout] ...
[INFO] [stdout] 124 |     const MAX: Self;
[INFO] [stdout]     |           ^^^
[INFO] [stdout] 125 |     const HALF_MAX: Self;
[INFO] [stdout]     |           ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 135 |     fn pack(d: &[Self::Single]) -> Self;
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.62s
[INFO] running `Command { std: "docker" "inspect" "85202b551d58c69bd60302597d0726be8a8b92a7f40d534921758cff14c2be72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85202b551d58c69bd60302597d0726be8a8b92a7f40d534921758cff14c2be72", kill_on_drop: false }`
[INFO] [stdout] 85202b551d58c69bd60302597d0726be8a8b92a7f40d534921758cff14c2be72
