[INFO] fetching crate ciclo 0.1.0...
[INFO] testing ciclo-0.1.0 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate ciclo 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] removed /workspace/builds/worker-6-tc1/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-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ciclo 0.1.0 on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 369dca4f1db7bba523352093f6ccaa0a0458441606e4ef2af084f965a38851a4
[INFO] running `Command { std: "docker" "start" "-a" "369dca4f1db7bba523352093f6ccaa0a0458441606e4ef2af084f965a38851a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "369dca4f1db7bba523352093f6ccaa0a0458441606e4ef2af084f965a38851a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "369dca4f1db7bba523352093f6ccaa0a0458441606e4ef2af084f965a38851a4", kill_on_drop: false }`
[INFO] [stdout] 369dca4f1db7bba523352093f6ccaa0a0458441606e4ef2af084f965a38851a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 94909c7f10b8755dd52d92802cf957c7a07efd8c9c320080c4d174f227860294
[INFO] running `Command { std: "docker" "start" "-a" "94909c7f10b8755dd52d92802cf957c7a07efd8c9c320080c4d174f227860294", 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 0.14s
[INFO] running `Command { std: "docker" "inspect" "94909c7f10b8755dd52d92802cf957c7a07efd8c9c320080c4d174f227860294", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94909c7f10b8755dd52d92802cf957c7a07efd8c9c320080c4d174f227860294", kill_on_drop: false }`
[INFO] [stdout] 94909c7f10b8755dd52d92802cf957c7a07efd8c9c320080c4d174f227860294
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--no-run" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 94966e87bd02fb640efcfc3bbe46c712937c0688bcd3affce1aceda749be652f
[INFO] running `Command { std: "docker" "start" "-a" "94966e87bd02fb640efcfc3bbe46c712937c0688bcd3affce1aceda749be652f", 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 1.72s
[INFO] running `Command { std: "docker" "inspect" "94966e87bd02fb640efcfc3bbe46c712937c0688bcd3affce1aceda749be652f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94966e87bd02fb640efcfc3bbe46c712937c0688bcd3affce1aceda749be652f", kill_on_drop: false }`
[INFO] [stdout] 94966e87bd02fb640efcfc3bbe46c712937c0688bcd3affce1aceda749be652f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] aea5a555ae77924e1bde40e0724e3912fe95688a7fc59069da2f0586875f41db
[INFO] running `Command { std: "docker" "start" "-a" "aea5a555ae77924e1bde40e0724e3912fe95688a7fc59069da2f0586875f41db", 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 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/ciclo-83c72c7f8538607c)
[INFO] [stdout] 
[INFO] [stdout] running 35 tests
[INFO] [stdout] test all_cycles::tests::c3 ... ok
[INFO] [stdout] test cycle::flip::foo ... ok
[INFO] [stdout] test all_cycles::tests::k5 ... ok
[INFO] [stdout] test all_cycles::tests::butterfly ... ok
[INFO] [stdout] test all_cycles::tests::k4 ... ok
[INFO] [stdout] test all_cycles::tests::p3 ... ok
[INFO] [stdout] test all_cycles::tests::diamond ... ok
[INFO] [stdout] test cycle::new::no_rotate_flip ... ok
[INFO] [stdout] test cycle::new::no_rotate_no_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::rotation::min_middle ... ok
[INFO] [stdout] test cycle::rotation::min_left ... ok
[INFO] [stdout] test cycle::rotate::two ... ok
[INFO] [stdout] test cycle::rotation::min_right ... ok
[INFO] [stdout] test cycle::rotate::zero ... ok
[INFO] [stdout] test graph::from_edges::duplicate_edge_forward ... ok
[INFO] [stdout] test graph::from_edges::duplicate_edge_reverse ... ok
[INFO] [stdout] test graph::from_edges::loop_edge ... ok
[INFO] [stdout] test graph::from_edges::p3_inverted_second ... ok
[INFO] [stdout] test graph::from_edges::s3 ... ok
[INFO] [stdout] test graph::remove::p3_internal ... ok
[INFO] [stdout] test graph::remove::p3_terminal ... ok
[INFO] [stdout] test path::concatenate::back_edge ... ok
[INFO] [stdout] test path::concatenate::out_and_back ... ok
[INFO] [stdout] test graph::from_edges::p3_inverted_first ... ok
[INFO] [stdout] test graph::from_edges::p2 ... ok
[INFO] [stdout] test graph::remove::missing_node ... ok
[INFO] [stdout] test graph::from_edges::p3 ... ok
[INFO] [stdout] test path::concatenate::cycle ... ok
[INFO] [stdout] test graph::remove::pre_cycle ... ok
[INFO] [stdout] test graph::from_edges::p3_duplicate_second_reverse ... ok
[INFO] [stdout] test graph::remove::s3_internal ... ok
[INFO] [stdout] test path::concatenate::straight ... 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] running `Command { std: "docker" "inspect" "aea5a555ae77924e1bde40e0724e3912fe95688a7fc59069da2f0586875f41db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aea5a555ae77924e1bde40e0724e3912fe95688a7fc59069da2f0586875f41db", kill_on_drop: false }`
[INFO] [stdout] aea5a555ae77924e1bde40e0724e3912fe95688a7fc59069da2f0586875f41db