[INFO] fetching crate d2_iterators_in_rust 0.1.0...
[INFO] testing d2_iterators_in_rust-0.1.0 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate d2_iterators_in_rust 0.1.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate d2_iterators_in_rust 0.1.0
[INFO] finished tweaking crates.io crate d2_iterators_in_rust 0.1.0
[INFO] tweaked toml for crates.io crate d2_iterators_in_rust 0.1.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate d2_iterators_in_rust 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] crate crates.io crate d2_iterators_in_rust 0.1.0 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded itertools v0.8.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] bc42a2345a7d85835d779b681c83b6bd9db9ed66e3426992da0bf682d7eb61d7
[INFO] running `Command { std: "docker" "start" "-a" "bc42a2345a7d85835d779b681c83b6bd9db9ed66e3426992da0bf682d7eb61d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc42a2345a7d85835d779b681c83b6bd9db9ed66e3426992da0bf682d7eb61d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc42a2345a7d85835d779b681c83b6bd9db9ed66e3426992da0bf682d7eb61d7", kill_on_drop: false }`
[INFO] [stdout] bc42a2345a7d85835d779b681c83b6bd9db9ed66e3426992da0bf682d7eb61d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 86fca730b159555cb9fa41d6197a8174a8c2d2b3b2d2f1c6d8036078b05ab474
[INFO] running `Command { std: "docker" "start" "-a" "86fca730b159555cb9fa41d6197a8174a8c2d2b3b2d2f1c6d8036078b05ab474", kill_on_drop: false }`
[INFO] [stderr]    Compiling either v1.9.0
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling d2_iterators_in_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `RangeIterator` is never constructed
[INFO] [stdout]  --> src/gen_range.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct RangeIterator {
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/gen_range.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | impl RangeIterator {
[INFO] [stdout]   | ------------------ associated function in this implementation
[INFO] [stdout] 8 |     pub fn new(start: i32, stop: i32, step: i32) -> RangeIterator {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SkipIterator` is never constructed
[INFO] [stdout]  --> src/combi.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct SkipIterator<I: Iterator> {
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IterCombi` is never used
[INFO] [stdout]   --> src/combi.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub trait IterCombi: Iterator + Sized {
[INFO] [stdout]    |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.71s
[INFO] running `Command { std: "docker" "inspect" "86fca730b159555cb9fa41d6197a8174a8c2d2b3b2d2f1c6d8036078b05ab474", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86fca730b159555cb9fa41d6197a8174a8c2d2b3b2d2f1c6d8036078b05ab474", kill_on_drop: false }`
[INFO] [stdout] 86fca730b159555cb9fa41d6197a8174a8c2d2b3b2d2f1c6d8036078b05ab474
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 6e9b154885f435ab3fe3a27218e1a231ecd63bf6069f0294cd8f038083b66469
[INFO] running `Command { std: "docker" "start" "-a" "6e9b154885f435ab3fe3a27218e1a231ecd63bf6069f0294cd8f038083b66469", kill_on_drop: false }`
[INFO] [stdout] warning: struct `RangeIterator` is never constructed
[INFO] [stdout]  --> src/gen_range.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct RangeIterator {
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/gen_range.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | impl RangeIterator {
[INFO] [stdout]   | ------------------ associated function in this implementation
[INFO] [stdout] 8 |     pub fn new(start: i32, stop: i32, step: i32) -> RangeIterator {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SkipIterator` is never constructed
[INFO] [stdout]  --> src/combi.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct SkipIterator<I: Iterator> {
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IterCombi` is never used
[INFO] [stdout]   --> src/combi.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub trait IterCombi: Iterator + Sized {
[INFO] [stdout]    |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling d2_iterators_in_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/combi.rs:46:41
[INFO] [stdout]    |
[INFO] [stdout] 46 |         let v: Vec<&str> = s.split(" ").intersperse(",").collect();
[INFO] [stdout]    |                                         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stdout]    = note: `#[warn(unstable_name_collisions)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] help: add `#![feature(iter_intersperse)]` to the crate attributes to enable `std::iter::Iterator::intersperse`
[INFO] [stdout]   --> src/lib.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout]  1 + #![feature(iter_intersperse)]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "6e9b154885f435ab3fe3a27218e1a231ecd63bf6069f0294cd8f038083b66469", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e9b154885f435ab3fe3a27218e1a231ecd63bf6069f0294cd8f038083b66469", kill_on_drop: false }`
[INFO] [stdout] 6e9b154885f435ab3fe3a27218e1a231ecd63bf6069f0294cd8f038083b66469
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 512f391ec23025bfdd5b1a8e917424588260baacb04f6afec92eb0f5eb57eeea
[INFO] running `Command { std: "docker" "start" "-a" "512f391ec23025bfdd5b1a8e917424588260baacb04f6afec92eb0f5eb57eeea", kill_on_drop: false }`
[INFO] [stderr] warning: struct `RangeIterator` is never constructed
[INFO] [stderr]  --> src/gen_range.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub struct RangeIterator {
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]  --> src/gen_range.rs:8:12
[INFO] [stderr]   |
[INFO] [stderr] 7 | impl RangeIterator {
[INFO] [stderr]   | ------------------ associated function in this implementation
[INFO] [stderr] 8 |     pub fn new(start: i32, stop: i32, step: i32) -> RangeIterator {
[INFO] [stderr]   |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `SkipIterator` is never constructed
[INFO] [stderr]  --> src/combi.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub struct SkipIterator<I: Iterator> {
[INFO] [stderr]   |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `IterCombi` is never used
[INFO] [stderr]   --> src/combi.rs:13:11
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub trait IterCombi: Iterator + Sized {
[INFO] [stderr]    |           ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `d2_iterators_in_rust` (lib) generated 4 warnings
[INFO] [stderr] warning: a method with this name may be added to the standard library in the future
[INFO] [stderr]   --> src/combi.rs:46:41
[INFO] [stderr]    |
[INFO] [stderr] 46 |         let v: Vec<&str> = s.split(" ").intersperse(",").collect();
[INFO] [stderr]    |                                         ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]    = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stderr]    = note: `#[warn(unstable_name_collisions)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stderr] help: add `#![feature(iter_intersperse)]` to the crate attributes to enable `std::iter::Iterator::intersperse`
[INFO] [stderr]   --> src/lib.rs:1:1
[INFO] [stderr]    |
[INFO] [stderr]  1 + #![feature(iter_intersperse)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: `d2_iterators_in_rust` (lib test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/d2_iterators-910411a8bdd61f08)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test combi::test_skip::test_interleave ... ok
[INFO] [stdout] test combi::test_skip::test_skip_half ... ok
[INFO] [stdout] test combi::test_skip::test_intersperse ... ok
[INFO] [stdout] test gen_range::tests::it_works ... ok
[INFO] [stdout] test combi::test_skip::test_step_by ... ok
[INFO] [stdout] test tests::filter ... ok
[INFO] [stdout] test tests::gen_test ... ok
[INFO] [stdout] test v4_intoiter::tests_company::test_into_iter ... ok
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/d2_printout-14bb5b7db8c2f65f)
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[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 d2_iterators
[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 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "512f391ec23025bfdd5b1a8e917424588260baacb04f6afec92eb0f5eb57eeea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "512f391ec23025bfdd5b1a8e917424588260baacb04f6afec92eb0f5eb57eeea", kill_on_drop: false }`
[INFO] [stdout] 512f391ec23025bfdd5b1a8e917424588260baacb04f6afec92eb0f5eb57eeea
