[INFO] fetching crate ciclo 0.1.0...
[INFO] testing ciclo-0.1.0 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate ciclo 0.1.0 into /workspace/builds/worker-1-tc2/source
[INFO] removed /workspace/builds/worker-1-tc2/source/.cargo/config.toml
[INFO] started tweaking crates.io crate ciclo 0.1.0
[INFO] finished tweaking crates.io crate ciclo 0.1.0
[INFO] tweaked toml for crates.io crate ciclo 0.1.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ciclo 0.1.0 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 3 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1b720686cb1f3fc6d2655f8d113cb43c13ea71eb7fc397a4396fecc01626793f
[INFO] running `Command { std: "docker" "start" "-a" "1b720686cb1f3fc6d2655f8d113cb43c13ea71eb7fc397a4396fecc01626793f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1b720686cb1f3fc6d2655f8d113cb43c13ea71eb7fc397a4396fecc01626793f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b720686cb1f3fc6d2655f8d113cb43c13ea71eb7fc397a4396fecc01626793f", kill_on_drop: false }`
[INFO] [stdout] 1b720686cb1f3fc6d2655f8d113cb43c13ea71eb7fc397a4396fecc01626793f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 39ff1ea1b9b39e4b4d42c458fb9ff502548c52117a3a01e742dd4cceec3586d8
[INFO] running `Command { std: "docker" "start" "-a" "39ff1ea1b9b39e4b4d42c458fb9ff502548c52117a3a01e742dd4cceec3586d8", kill_on_drop: false }`
[INFO] [stderr]    Compiling ciclo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/all_cycles.rs:11:22
[INFO] [stdout]    |
[INFO] [stdout] 11 |         for paths in graph.remove(&key) {
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 11 -         for paths in graph.remove(&key) {
[INFO] [stdout] 11 +         while let Some(paths) = graph.remove(&key) {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 11 -         for paths in graph.remove(&key) {
[INFO] [stdout] 11 +         if let Some(paths) = graph.remove(&key) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "39ff1ea1b9b39e4b4d42c458fb9ff502548c52117a3a01e742dd4cceec3586d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39ff1ea1b9b39e4b4d42c458fb9ff502548c52117a3a01e742dd4cceec3586d8", kill_on_drop: false }`
[INFO] [stdout] 39ff1ea1b9b39e4b4d42c458fb9ff502548c52117a3a01e742dd4cceec3586d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 63d46da83577b7a634edaa4573806d763eb19e2a36e632768b3ee183a7ea9de3
[INFO] running `Command { std: "docker" "start" "-a" "63d46da83577b7a634edaa4573806d763eb19e2a36e632768b3ee183a7ea9de3", kill_on_drop: false }`
[INFO] [stderr]    Compiling yansi v1.0.1
[INFO] [stderr]    Compiling diff v0.1.13
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/all_cycles.rs:11:22
[INFO] [stdout]    |
[INFO] [stdout] 11 |         for paths in graph.remove(&key) {
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 11 -         for paths in graph.remove(&key) {
[INFO] [stdout] 11 +         while let Some(paths) = graph.remove(&key) {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 11 -         for paths in graph.remove(&key) {
[INFO] [stdout] 11 +         if let Some(paths) = graph.remove(&key) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling pretty_assertions v1.4.1
[INFO] [stderr]    Compiling ciclo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/all_cycles.rs:11:22
[INFO] [stdout]    |
[INFO] [stdout] 11 |         for paths in graph.remove(&key) {
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 11 -         for paths in graph.remove(&key) {
[INFO] [stdout] 11 +         while let Some(paths) = graph.remove(&key) {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 11 -         for paths in graph.remove(&key) {
[INFO] [stdout] 11 +         if let Some(paths) = graph.remove(&key) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.06s
[INFO] running `Command { std: "docker" "inspect" "63d46da83577b7a634edaa4573806d763eb19e2a36e632768b3ee183a7ea9de3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63d46da83577b7a634edaa4573806d763eb19e2a36e632768b3ee183a7ea9de3", kill_on_drop: false }`
[INFO] [stdout] 63d46da83577b7a634edaa4573806d763eb19e2a36e632768b3ee183a7ea9de3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d2587db8a25d7a8fba76b5087e01aa3d7313d9da99ca78efd65085269842de82
[INFO] running `Command { std: "docker" "start" "-a" "d2587db8a25d7a8fba76b5087e01aa3d7313d9da99ca78efd65085269842de82", kill_on_drop: false }`
[INFO] [stderr] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stderr]   --> src/all_cycles.rs:11:22
[INFO] [stderr]    |
[INFO] [stderr] 11 |         for paths in graph.remove(&key) {
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stderr] help: to check pattern in a loop use `while let`
[INFO] [stderr]    |
[INFO] [stderr] 11 -         for paths in graph.remove(&key) {
[INFO] [stderr] 11 +         while let Some(paths) = graph.remove(&key) {
[INFO] [stderr]    |
[INFO] [stderr] help: consider using `if let` to clear intent
[INFO] [stderr]    |
[INFO] [stderr] 11 -         for paths in graph.remove(&key) {
[INFO] [stderr] 11 +         if let Some(paths) = graph.remove(&key) {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: `ciclo` (lib) generated 1 warning
[INFO] [stderr] warning: `ciclo` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ciclo-2b2bcf8462e745ec)
[INFO] [stdout] 
[INFO] [stdout] running 35 tests
[INFO] [stderr]    Doc-tests ciclo
[INFO] [stdout] test all_cycles::tests::diamond ... ok
[INFO] [stdout] test all_cycles::tests::k4 ... ok
[INFO] [stdout] test all_cycles::tests::c3 ... ok
[INFO] [stdout] test all_cycles::tests::butterfly ... ok
[INFO] [stdout] test all_cycles::tests::p3 ... ok
[INFO] [stdout] test cycle::flip::foo ... ok
[INFO] [stdout] test cycle::new::no_rotate_flip ... ok
[INFO] [stdout] test cycle::new::rotate_no_flip ... ok
[INFO] [stdout] test cycle::rotate::foo ... ok
[INFO] [stdout] test cycle::rotate::one ... ok
[INFO] [stdout] test cycle::rotate::two ... ok
[INFO] [stdout] test cycle::new::no_rotate_no_flip ... ok
[INFO] [stdout] test cycle::rotation::min_left ... ok
[INFO] [stdout] test cycle::rotate::zero ... ok
[INFO] [stdout] test cycle::rotation::min_middle ... ok
[INFO] [stdout] test all_cycles::tests::k5 ... ok
[INFO] [stdout] test cycle::rotation::min_right ... ok
[INFO] [stdout] test graph::from_edges::duplicate_edge_forward ... ok
[INFO] [stdout] test graph::from_edges::loop_edge ... ok
[INFO] [stdout] test graph::from_edges::duplicate_edge_reverse ... ok
[INFO] [stdout] test graph::from_edges::p2 ... ok
[INFO] [stdout] test graph::from_edges::p3_inverted_first ... ok
[INFO] [stdout] test graph::from_edges::p3 ... ok
[INFO] [stdout] test graph::from_edges::p3_inverted_second ... ok
[INFO] [stdout] test graph::remove::missing_node ... ok
[INFO] [stdout] test graph::from_edges::p3_duplicate_second_reverse ... ok
[INFO] [stdout] test graph::remove::p3_internal ... ok
[INFO] [stdout] test path::concatenate::back_edge ... ok
[INFO] [stdout] test graph::remove::s3_internal ... ok
[INFO] [stdout] test path::concatenate::cycle ... ok
[INFO] [stdout] test graph::from_edges::s3 ... ok
[INFO] [stdout] test path::concatenate::out_and_back ... ok
[INFO] [stdout] test graph::remove::p3_terminal ... ok
[INFO] [stdout] test path::concatenate::straight ... ok
[INFO] [stdout] test graph::remove::pre_cycle ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 35 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] running `Command { std: "docker" "inspect" "d2587db8a25d7a8fba76b5087e01aa3d7313d9da99ca78efd65085269842de82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2587db8a25d7a8fba76b5087e01aa3d7313d9da99ca78efd65085269842de82", kill_on_drop: false }`
[INFO] [stdout] d2587db8a25d7a8fba76b5087e01aa3d7313d9da99ca78efd65085269842de82