[INFO] fetching crate internal-iterator 0.2.3...
[INFO] testing internal-iterator-0.2.3 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate internal-iterator 0.2.3 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate internal-iterator 0.2.3
[INFO] finished tweaking crates.io crate internal-iterator 0.2.3
[INFO] tweaked toml for crates.io crate internal-iterator 0.2.3 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate internal-iterator 0.2.3 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "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" "+b83b707f97d809763b7861afa7638871f3339a33" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 94d009c120daf688cd61a67cfa6dd4fba68e69ce26324e4432fc0ccffc34538e
[INFO] running `Command { std: "docker" "start" "-a" "94d009c120daf688cd61a67cfa6dd4fba68e69ce26324e4432fc0ccffc34538e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "94d009c120daf688cd61a67cfa6dd4fba68e69ce26324e4432fc0ccffc34538e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94d009c120daf688cd61a67cfa6dd4fba68e69ce26324e4432fc0ccffc34538e", kill_on_drop: false }`
[INFO] [stdout] 94d009c120daf688cd61a67cfa6dd4fba68e69ce26324e4432fc0ccffc34538e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c85e8ac2815d3ae95cd07313395e91680f408c2ab323a80833263af65341071b
[INFO] running `Command { std: "docker" "start" "-a" "c85e8ac2815d3ae95cd07313395e91680f408c2ab323a80833263af65341071b", kill_on_drop: false }`
[INFO] [stderr]    Compiling internal-iterator v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]    --> src/lib.rs:452:9
[INFO] [stdout]     |
[INFO] [stdout] 452 | /         self.try_for_each::<(), _>(|item| {
[INFO] [stdout] 453 | |             f(item);
[INFO] [stdout] 454 | |             ControlFlow::Continue(())
[INFO] [stdout] 455 | |         });
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 452 |         let _ = self.try_for_each::<(), _>(|item| {
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/from_fn_impl.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 | /         (self.f)(&mut |item| {
[INFO] [stdout] 32 | |             match f(item) {
[INFO] [stdout] 33 | |                 ControlFlow::Continue(()) => ControlFlow::Continue(()),
[INFO] [stdout] 34 | |                 ControlFlow::Break(res) => {
[INFO] [stdout] ...  |
[INFO] [stdout] 39 | |         });
[INFO] [stdout]    | |__________^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let _ = (self.f)(&mut |item| {
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "c85e8ac2815d3ae95cd07313395e91680f408c2ab323a80833263af65341071b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c85e8ac2815d3ae95cd07313395e91680f408c2ab323a80833263af65341071b", kill_on_drop: false }`
[INFO] [stdout] c85e8ac2815d3ae95cd07313395e91680f408c2ab323a80833263af65341071b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1469cf731a1f98d8644be4a94a0fae9ed80ddc3dfb51f30da8ea7591f68fc797
[INFO] running `Command { std: "docker" "start" "-a" "1469cf731a1f98d8644be4a94a0fae9ed80ddc3dfb51f30da8ea7591f68fc797", kill_on_drop: false }`
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]    --> src/lib.rs:452:9
[INFO] [stdout]     |
[INFO] [stdout] 452 | /         self.try_for_each::<(), _>(|item| {
[INFO] [stdout] 453 | |             f(item);
[INFO] [stdout] 454 | |             ControlFlow::Continue(())
[INFO] [stdout] 455 | |         });
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 452 |         let _ = self.try_for_each::<(), _>(|item| {
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/from_fn_impl.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 | /         (self.f)(&mut |item| {
[INFO] [stdout] 32 | |             match f(item) {
[INFO] [stdout] 33 | |                 ControlFlow::Continue(()) => ControlFlow::Continue(()),
[INFO] [stdout] 34 | |                 ControlFlow::Break(res) => {
[INFO] [stdout] ...  |
[INFO] [stdout] 39 | |         });
[INFO] [stdout]    | |__________^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let _ = (self.f)(&mut |item| {
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling internal-iterator v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]    --> src/lib.rs:452:9
[INFO] [stdout]     |
[INFO] [stdout] 452 | /         self.try_for_each::<(), _>(|item| {
[INFO] [stdout] 453 | |             f(item);
[INFO] [stdout] 454 | |             ControlFlow::Continue(())
[INFO] [stdout] 455 | |         });
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 452 |         let _ = self.try_for_each::<(), _>(|item| {
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stdout]   --> src/from_fn_impl.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 | /         (self.f)(&mut |item| {
[INFO] [stdout] 32 | |             match f(item) {
[INFO] [stdout] 33 | |                 ControlFlow::Continue(()) => ControlFlow::Continue(()),
[INFO] [stdout] 34 | |                 ControlFlow::Break(res) => {
[INFO] [stdout] ...  |
[INFO] [stdout] 39 | |         });
[INFO] [stdout]    | |__________^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let _ = (self.f)(&mut |item| {
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "1469cf731a1f98d8644be4a94a0fae9ed80ddc3dfb51f30da8ea7591f68fc797", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1469cf731a1f98d8644be4a94a0fae9ed80ddc3dfb51f30da8ea7591f68fc797", kill_on_drop: false }`
[INFO] [stdout] 1469cf731a1f98d8644be4a94a0fae9ed80ddc3dfb51f30da8ea7591f68fc797
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] dab497e0aa8f54d54180d3766e8a17199b51e1208132c76f48b4b8f339be4473
[INFO] running `Command { std: "docker" "start" "-a" "dab497e0aa8f54d54180d3766e8a17199b51e1208132c76f48b4b8f339be4473", kill_on_drop: false }`
[INFO] [stderr] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stderr]    --> src/lib.rs:452:9
[INFO] [stderr]     |
[INFO] [stderr] 452 | /         self.try_for_each::<(), _>(|item| {
[INFO] [stderr] 453 | |             f(item);
[INFO] [stderr] 454 | |             ControlFlow::Continue(())
[INFO] [stderr] 455 | |         });
[INFO] [stderr]     | |__________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 452 |         let _ = self.try_for_each::<(), _>(|item| {
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::ops::ControlFlow` that must be used
[INFO] [stderr]   --> src/from_fn_impl.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 | /         (self.f)(&mut |item| {
[INFO] [stderr] 32 | |             match f(item) {
[INFO] [stderr] 33 | |                 ControlFlow::Continue(()) => ControlFlow::Continue(()),
[INFO] [stderr] 34 | |                 ControlFlow::Break(res) => {
[INFO] [stderr] ...  |
[INFO] [stderr] 39 | |         });
[INFO] [stderr]    | |__________^
[INFO] [stderr]    |
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 31 |         let _ = (self.f)(&mut |item| {
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `internal-iterator` (lib) generated 2 warnings
[INFO] [stderr] warning: `internal-iterator` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/internal_iterator-2dc8728e67fb6cde)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test from_fn_impl::can_be_static ... ok
[INFO] [stdout] test from_fn_impl::pipeline_tests ... ok
[INFO] [stdout] test tests::map_side_effects_preserved ... ok
[INFO] [stdout] test tests::readme_example ... ok
[INFO] [stdout] test tests::clone_side_effects_preserved ... ok
[INFO] [stdout] test tests::take_empty ... ok
[INFO] [stdout] test tests::take_short_circuit ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    Doc-tests internal_iterator
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 29 tests
[INFO] [stdout] test src/lib.rs - InternalIterator::flat_map (line 407) ... ok
[INFO] [stdout] test src/lib.rs - InternalIterator::find_map (line 170) ... ok
[INFO] [stdout] test src/lib.rs - InternalIterator::enumerate (line 325) ... ok
[INFO] [stdout] test src/from_fn_impl.rs - from_fn_impl::__compile_fail_check (line 133) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - InternalIterator::cloned (line 251) ... ok
[INFO] [stdout] test src/lib.rs - InternalIterator::filter_map (line 356) ... ok
[INFO] [stdout] test src/lib.rs - InternalIterator::copied (line 290) ... ok
[INFO] [stdout] test src/lib.rs - InternalIterator::all (line 200) ... ok
[INFO] [stdout] test src/lib.rs - InternalIterator::any (line 215) ... ok
[INFO] [stdout] test src/lib.rs - InternalIterator::chain (line 231) ... ok
[INFO] [stdout] test src/from_fn_impl.rs - from_fn_impl::from_fn (line 59) ... ok
[INFO] [stdout] test src/lib.rs - InternalIterator::fold (line 430) ... ok
[INFO] [stdout] test src/lib.rs - InternalIterator::count (line 308) ... ok
[INFO] [stdout] test src/lib.rs - (line 21) ... ok
[INFO] [stdout] test src/lib.rs - InternalIterator::collect (line 269) ... ok
[INFO] [stdout] test src/lib.rs - InternalIterator::nth (line 625) ... ok
[INFO] [stdout] test src/lib.rs - InternalIterator::take (line 690) ... ok
[INFO] [stdout] test src/lib.rs - InternalIterator::filter (line 339) ... ok
[INFO] [stdout] test src/lib.rs - InternalIterator::inspect (line 463) ... ok
[INFO] [stdout] test src/lib.rs - InternalIterator::find (line 377) ... ok
[INFO] [stdout] test src/lib.rs - InternalIterator::position (line 643) ... ok
[INFO] [stdout] test src/lib.rs - InternalIterator::min (line 568) ... ok
[INFO] [stdout] test src/lib.rs - InternalIterator::skip (line 670) ... ok
[INFO] [stdout] test src/lib.rs - IteratorExt::into_internal (line 777) ... ok
[INFO] [stdout] test src/lib.rs - InternalIterator::next (line 614) ... ok
[INFO] [stdout] test src/lib.rs - InternalIterator::last (line 489) ... ok
[INFO] [stdout] test src/lib.rs - InternalIterator::max (line 526) ... ok
[INFO] [stdout] test src/lib.rs - InternalIterator::try_for_each (line 145) ... ok
[INFO] [stdout] test src/lib.rs - InternalIterator::map (line 505) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 29 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.25s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "dab497e0aa8f54d54180d3766e8a17199b51e1208132c76f48b4b8f339be4473", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dab497e0aa8f54d54180d3766e8a17199b51e1208132c76f48b4b8f339be4473", kill_on_drop: false }`
[INFO] [stdout] dab497e0aa8f54d54180d3766e8a17199b51e1208132c76f48b4b8f339be4473