[INFO] fetching crate loopable 0.1.0...
[INFO] testing loopable-0.1.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate loopable 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate loopable 0.1.0
[INFO] finished tweaking crates.io crate loopable 0.1.0
[INFO] tweaked toml for crates.io crate loopable 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate loopable 0.1.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate loopable 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded itertools v0.9.0
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aaa001ea9cb559e945781fec5ec3f4c88c93a7811790031a40de1647aee7e639
[INFO] running `Command { std: "docker" "start" "-a" "aaa001ea9cb559e945781fec5ec3f4c88c93a7811790031a40de1647aee7e639", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aaa001ea9cb559e945781fec5ec3f4c88c93a7811790031a40de1647aee7e639", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aaa001ea9cb559e945781fec5ec3f4c88c93a7811790031a40de1647aee7e639", kill_on_drop: false }`
[INFO] [stdout] aaa001ea9cb559e945781fec5ec3f4c88c93a7811790031a40de1647aee7e639
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b3398a1fa9e6e53602d2753e329264080c2ae6ac08c8840819c0b1e749078eeb
[INFO] running `Command { std: "docker" "start" "-a" "b3398a1fa9e6e53602d2753e329264080c2ae6ac08c8840819c0b1e749078eeb", kill_on_drop: false }`
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling loopable v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `Rangeable` is never used
[INFO] [stdout]  --> src/gen_range.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub trait Rangeable: AddAssign + PartialOrd + Copy {}
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `GenRangeIterator` is never constructed
[INFO] [stdout]   --> src/gen_range.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct GenRangeIterator<T> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/gen_range.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl<T: Rangeable> GenRangeIterator<T> {
[INFO] [stdout]    | -------------------------------------- associated function in this implementation
[INFO] [stdout] 23 |     pub fn new(start: T, stop: T, step: T) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SkipIterator` is never constructed
[INFO] [stdout]  --> src/combi.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct SkipIterator<I: Iterator> {
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IterCombi` is never used
[INFO] [stdout]   --> src/combi.rs:18:11
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub trait IterCombi: Iterator + Sized {
[INFO] [stdout]    |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_c` is never used
[INFO] [stdout]   --> src/main.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn print_c<I: Iterator<Item=String>>(v:I) {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.38s
[INFO] running `Command { std: "docker" "inspect" "b3398a1fa9e6e53602d2753e329264080c2ae6ac08c8840819c0b1e749078eeb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3398a1fa9e6e53602d2753e329264080c2ae6ac08c8840819c0b1e749078eeb", kill_on_drop: false }`
[INFO] [stdout] b3398a1fa9e6e53602d2753e329264080c2ae6ac08c8840819c0b1e749078eeb
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dd226d022c041e9a998e7fdb5def5cceb893d82fa13191f3c4cc04bc1068be5d
[INFO] running `Command { std: "docker" "start" "-a" "dd226d022c041e9a998e7fdb5def5cceb893d82fa13191f3c4cc04bc1068be5d", kill_on_drop: false }`
[INFO] [stderr]    Compiling loopable v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `Rangeable` is never used
[INFO] [stdout]  --> src/gen_range.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub trait Rangeable: AddAssign + PartialOrd + Copy {}
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `GenRangeIterator` is never constructed
[INFO] [stdout]   --> src/gen_range.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct GenRangeIterator<T> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/gen_range.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl<T: Rangeable> GenRangeIterator<T> {
[INFO] [stdout]    | -------------------------------------- associated function in this implementation
[INFO] [stdout] 23 |     pub fn new(start: T, stop: T, step: T) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SkipIterator` is never constructed
[INFO] [stdout]  --> src/combi.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct SkipIterator<I: Iterator> {
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IterCombi` is never used
[INFO] [stdout]   --> src/combi.rs:18:11
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub trait IterCombi: Iterator + Sized {
[INFO] [stdout]    |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_c` is never used
[INFO] [stdout]   --> src/main.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn print_c<I: Iterator<Item=String>>(v:I) {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/combi.rs:95:42
[INFO] [stdout]    |
[INFO] [stdout] 95 |         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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "dd226d022c041e9a998e7fdb5def5cceb893d82fa13191f3c4cc04bc1068be5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd226d022c041e9a998e7fdb5def5cceb893d82fa13191f3c4cc04bc1068be5d", kill_on_drop: false }`
[INFO] [stdout] dd226d022c041e9a998e7fdb5def5cceb893d82fa13191f3c4cc04bc1068be5d
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 573c2522fa31d9cdf466d19ea45db069f49e6e1b97251672f57ac4557f167918
[INFO] running `Command { std: "docker" "start" "-a" "573c2522fa31d9cdf466d19ea45db069f49e6e1b97251672f57ac4557f167918", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test combi::combi_tests::it_works ... ok
[INFO] [stdout] test combi::combi_tests::skip_iter_2 ... ok
[INFO] [stdout] test combi::combi_tests::skip_iter_test ... ok
[INFO] [stdout] test combi::combi_tests::test_interleave ... ok
[INFO] [stdout] test combi::combi_tests::test_intersperse ... ok
[INFO] [stdout] test combi::combi_tests::test_step_by ... ok
[INFO] [stdout] test tests::iter_test ... ok
[INFO] [stderr] warning: trait `Rangeable` is never used
[INFO] [stderr]  --> src/gen_range.rs:8:11
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub trait Rangeable: AddAssign + PartialOrd + Copy {}
[INFO] [stderr]   |           ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `GenRangeIterator` is never constructed
[INFO] [stderr]   --> src/gen_range.rs:15:12
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub struct GenRangeIterator<T> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/gen_range.rs:23:12
[INFO] [stderr]    |
[INFO] [stderr] 22 | impl<T: Rangeable> GenRangeIterator<T> {
[INFO] [stderr]    | -------------------------------------- associated function in this implementation
[INFO] [stderr] 23 |     pub fn new(start: T, stop: T, step: T) -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `SkipIterator` is never constructed
[INFO] [stderr]  --> src/combi.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct SkipIterator<I: Iterator> {
[INFO] [stderr]   |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `IterCombi` is never used
[INFO] [stderr]   --> src/combi.rs:18:11
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub trait IterCombi: Iterator + Sized {
[INFO] [stderr]    |           ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `loopable` (lib) generated 5 warnings
[INFO] [stderr] warning: function `print_c` is never used
[INFO] [stderr]   --> src/main.rs:42:4
[INFO] [stderr]    |
[INFO] [stderr] 42 | fn print_c<I: Iterator<Item=String>>(v:I) {
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `loopable` (bin "d2_printout" test) generated 1 warning
[INFO] [stderr] warning: a method with this name may be added to the standard library in the future
[INFO] [stderr]   --> src/combi.rs:95:42
[INFO] [stderr]    |
[INFO] [stderr] 95 |         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)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `loopable` (lib test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/d2_iterators-202a3a0e2827204d)
[INFO] [stdout] test gen_range::tests::iter_test ... ok
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] test tests::tup_test ... ok
[INFO] [stdout] test gen_range::tests::it_works ... ok
[INFO] [stdout] test gen_range::tests::filter ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/d2_printout-ca2122ac5e1f4b0c)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test gen_range::tests::filter ... ok
[INFO] [stdout] test gen_range::tests::it_works ... ok
[INFO] [stdout] test gen_range::tests::iter_test ... ok
[INFO] [stderr]    Doc-tests d2_iterators
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.27s
[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] running `Command { std: "docker" "inspect" "573c2522fa31d9cdf466d19ea45db069f49e6e1b97251672f57ac4557f167918", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "573c2522fa31d9cdf466d19ea45db069f49e6e1b97251672f57ac4557f167918", kill_on_drop: false }`
[INFO] [stdout] 573c2522fa31d9cdf466d19ea45db069f49e6e1b97251672f57ac4557f167918