[INFO] fetching crate iter-flow 0.1.0...
[INFO] testing iter-flow-0.1.0 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate iter-flow 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate iter-flow 0.1.0
[INFO] finished tweaking crates.io crate iter-flow 0.1.0
[INFO] tweaked toml for crates.io crate iter-flow 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate iter-flow 0.1.0 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] crate crates.io crate iter-flow 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" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 41568563337edb7974c6c15ff44b0c686ed448cedc48659ae3f6c498bb96a1eb
[INFO] running `Command { std: "docker" "start" "-a" "41568563337edb7974c6c15ff44b0c686ed448cedc48659ae3f6c498bb96a1eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "41568563337edb7974c6c15ff44b0c686ed448cedc48659ae3f6c498bb96a1eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41568563337edb7974c6c15ff44b0c686ed448cedc48659ae3f6c498bb96a1eb", kill_on_drop: false }`
[INFO] [stdout] 41568563337edb7974c6c15ff44b0c686ed448cedc48659ae3f6c498bb96a1eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 40b646f507b4acda0a5e83818c6726e3c8f1c4c18688efe1cc7da95d0c3ec2b9
[INFO] running `Command { std: "docker" "start" "-a" "40b646f507b4acda0a5e83818c6726e3c8f1c4c18688efe1cc7da95d0c3ec2b9", kill_on_drop: false }`
[INFO] [stderr]    Compiling iter-flow v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "40b646f507b4acda0a5e83818c6726e3c8f1c4c18688efe1cc7da95d0c3ec2b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40b646f507b4acda0a5e83818c6726e3c8f1c4c18688efe1cc7da95d0c3ec2b9", kill_on_drop: false }`
[INFO] [stdout] 40b646f507b4acda0a5e83818c6726e3c8f1c4c18688efe1cc7da95d0c3ec2b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] a5361d28d0643cdf7bc5dc1966bbc48f6e3b4fd5eda1afe99c95cb2f1a2318bf
[INFO] running `Command { std: "docker" "start" "-a" "a5361d28d0643cdf7bc5dc1966bbc48f6e3b4fd5eda1afe99c95cb2f1a2318bf", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.68
[INFO] [stderr]    Compiling iter-flow v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> examples/flow.rs:11:26
[INFO] [stdout]    |
[INFO] [stdout] 11 |         .flat_map_ok(|n| (0..n));
[INFO] [stdout]    |                          ^    ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 11 -         .flat_map_ok(|n| (0..n));
[INFO] [stdout] 11 +         .flat_map_ok(|n| 0..n);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.14s
[INFO] running `Command { std: "docker" "inspect" "a5361d28d0643cdf7bc5dc1966bbc48f6e3b4fd5eda1afe99c95cb2f1a2318bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5361d28d0643cdf7bc5dc1966bbc48f6e3b4fd5eda1afe99c95cb2f1a2318bf", kill_on_drop: false }`
[INFO] [stdout] a5361d28d0643cdf7bc5dc1966bbc48f6e3b4fd5eda1afe99c95cb2f1a2318bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] dc4b1fe78d80ecd5861a7235d41f1e84e8eb7f2982fa572a0fdfb57075f531b7
[INFO] running `Command { std: "docker" "start" "-a" "dc4b1fe78d80ecd5861a7235d41f1e84e8eb7f2982fa572a0fdfb57075f531b7", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around closure body
[INFO] [stderr]   --> examples/flow.rs:11:26
[INFO] [stderr]    |
[INFO] [stderr] 11 |         .flat_map_ok(|n| (0..n));
[INFO] [stderr]    |                          ^    ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 11 -         .flat_map_ok(|n| (0..n));
[INFO] [stderr] 11 +         .flat_map_ok(|n| 0..n);
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: `iter-flow` (example "flow") generated 1 warning (run `cargo fix --example "flow"` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/iter_flow-02e12cc69b7c525e)
[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] [stderr]    Doc-tests iter_flow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test src/lib.rs - assert_equal (line 278) ... ignored
[INFO] [stdout] test src/lib.rs - Iterflow::map_ok_borrow (line 100) ... ok
[INFO] [stdout] test src/lib.rs - Iterflow::and_then_borrow (line 139) ... ok
[INFO] [stdout] test src/lib.rs - Iterflow::map_err (line 64) ... ok
[INFO] [stdout] test src/lib.rs - (line 7) ... ok
[INFO] [stdout] test src/lib.rs - Iterflow::and_then_flat_borrow (line 226) ... ok
[INFO] [stdout] test src/lib.rs - Iterflow::flat_map_ok (line 160) ... ok
[INFO] [stdout] test src/lib.rs - Iterflow::and_then (line 118) ... ok
[INFO] [stdout] test src/lib.rs - Iterflow::map_ok (line 82) ... ok
[INFO] [stdout] test src/lib.rs - Iterflow::and_then_flat (line 200) ... ok
[INFO] [stdout] test src/lib.rs - (line 13) ... ok
[INFO] [stdout] test src/lib.rs - Iterflow::flat_map_ok_borrow (line 179) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.54s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "dc4b1fe78d80ecd5861a7235d41f1e84e8eb7f2982fa572a0fdfb57075f531b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc4b1fe78d80ecd5861a7235d41f1e84e8eb7f2982fa572a0fdfb57075f531b7", kill_on_drop: false }`
[INFO] [stdout] dc4b1fe78d80ecd5861a7235d41f1e84e8eb7f2982fa572a0fdfb57075f531b7