[INFO] cloning repository https://github.com/edgarogh/automata-to-graphviz
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/edgarogh/automata-to-graphviz" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fedgarogh%2Fautomata-to-graphviz", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fedgarogh%2Fautomata-to-graphviz'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b6d19bd04115fb83b8abb6b2ac02fdb00a13df4c
[INFO] testing edgarogh/automata-to-graphviz against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fedgarogh%2Fautomata-to-graphviz" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/edgarogh/automata-to-graphviz on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/edgarogh/automata-to-graphviz
[INFO] finished tweaking git repo https://github.com/edgarogh/automata-to-graphviz
[INFO] tweaked toml for git repo https://github.com/edgarogh/automata-to-graphviz written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/edgarogh/automata-to-graphviz already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 00cf185f52f574221c8c7676e313afff11a4d9b2122a28d5163f5a38429d9f05
[INFO] running `Command { std: "docker" "start" "-a" "00cf185f52f574221c8c7676e313afff11a4d9b2122a28d5163f5a38429d9f05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "00cf185f52f574221c8c7676e313afff11a4d9b2122a28d5163f5a38429d9f05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00cf185f52f574221c8c7676e313afff11a4d9b2122a28d5163f5a38429d9f05", kill_on_drop: false }`
[INFO] [stdout] 00cf185f52f574221c8c7676e313afff11a4d9b2122a28d5163f5a38429d9f05
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3b09a30977821af3004826a2004e219bed3cfeece5e0de28c2382810a0ebf6c9
[INFO] running `Command { std: "docker" "start" "-a" "3b09a30977821af3004826a2004e219bed3cfeece5e0de28c2382810a0ebf6c9", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.68
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling bumpalo v3.4.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.68
[INFO] [stderr]    Compiling eoautomata-core v0.1.0 (/opt/rustwide/workdir/core)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/eoa.rs:87:13
[INFO] [stdout]    |
[INFO] [stdout] 87 | /             automata.push_or_merge_connection(Connection {
[INFO] [stdout] 88 | |               id: 0,
[INFO] [stdout] 89 | |               from: prev_node.take().unwrap(),
[INFO] [stdout] 90 | |               to: id,
[INFO] [stdout] 91 | |               symbols: prev_arrow_symbols.take().unwrap(),
[INFO] [stdout] 92 | |             });
[INFO] [stdout]    | |_______________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> core/src/eoa.rs:103:13
[INFO] [stdout]     |
[INFO] [stdout] 103 | /             automata.push_or_merge_connection(Connection {
[INFO] [stdout] 104 | |               id: 0,
[INFO] [stdout] 105 | |               from: id,
[INFO] [stdout] 106 | |               to: id,
[INFO] [stdout] 107 | |               symbols: node.stay.into_iter().copied().map(Box::from).collect(),
[INFO] [stdout] 108 | |             });
[INFO] [stdout]     | |_______________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/models.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 |     writeln!(&mut w, "digraph {{");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/models.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 80 |     writeln!(&mut w, "    rankdir = LR");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/models.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 |     writeln!(&mut w, "    splines = line");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/models.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 |     writeln!(&mut w, "    n0 [label=\"\",shape=none,height=.0,width=.0]");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/models.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 83 |     writeln!(&mut w, "    node [shape=\"doublecircle\"]");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/models.rs:85:7
[INFO] [stdout]    |
[INFO] [stdout] 85 |       writeln!(&mut w, "    \"{}\"", a);
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/models.rs:87:5
[INFO] [stdout]    |
[INFO] [stdout] 87 |     writeln!(&mut w, "    node [shape=\"circle\"]");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/models.rs:88:5
[INFO] [stdout]    |
[INFO] [stdout] 88 |     writeln!(&mut w, "    n0 -> \"{}\"", self.nodes[0].name);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/models.rs:90:7
[INFO] [stdout]    |
[INFO] [stdout] 90 | /       writeln!(&mut w,
[INFO] [stdout] 91 | |         "    \"{}\" -> \"{}\" [label=\"{}\"]",
[INFO] [stdout] 92 | |         self.get_node(conn.from).name,
[INFO] [stdout] 93 | |         self.get_node(conn.to).name,
[INFO] [stdout] 94 | |         conn.symbols.join(","),
[INFO] [stdout] 95 | |       );
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/models.rs:97:5
[INFO] [stdout]    |
[INFO] [stdout] 97 |     writeln!(&mut w, "}}");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.68
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.68
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.68
[INFO] [stderr]    Compiling console_error_panic_hook v0.1.6
[INFO] [stderr]    Compiling eoautomata-web v0.1.0 (/opt/rustwide/workdir/web)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.59s
[INFO] running `Command { std: "docker" "inspect" "3b09a30977821af3004826a2004e219bed3cfeece5e0de28c2382810a0ebf6c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b09a30977821af3004826a2004e219bed3cfeece5e0de28c2382810a0ebf6c9", kill_on_drop: false }`
[INFO] [stdout] 3b09a30977821af3004826a2004e219bed3cfeece5e0de28c2382810a0ebf6c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4428d53ca717028a5f8165a57afcec64ff62aaef6b82fe8bf0fd8612aacbbc9d
[INFO] running `Command { std: "docker" "start" "-a" "4428d53ca717028a5f8165a57afcec64ff62aaef6b82fe8bf0fd8612aacbbc9d", kill_on_drop: false }`
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/eoa.rs:87:13
[INFO] [stdout]    |
[INFO] [stdout] 87 | /             automata.push_or_merge_connection(Connection {
[INFO] [stdout] 88 | |               id: 0,
[INFO] [stdout] 89 | |               from: prev_node.take().unwrap(),
[INFO] [stdout] 90 | |               to: id,
[INFO] [stdout] 91 | |               symbols: prev_arrow_symbols.take().unwrap(),
[INFO] [stdout] 92 | |             });
[INFO] [stdout]    | |_______________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> core/src/eoa.rs:103:13
[INFO] [stdout]     |
[INFO] [stdout] 103 | /             automata.push_or_merge_connection(Connection {
[INFO] [stdout] 104 | |               id: 0,
[INFO] [stdout] 105 | |               from: id,
[INFO] [stdout] 106 | |               to: id,
[INFO] [stdout] 107 | |               symbols: node.stay.into_iter().copied().map(Box::from).collect(),
[INFO] [stdout] 108 | |             });
[INFO] [stdout]     | |_______________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/models.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 |     writeln!(&mut w, "digraph {{");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/models.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 80 |     writeln!(&mut w, "    rankdir = LR");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/models.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 |     writeln!(&mut w, "    splines = line");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/models.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 |     writeln!(&mut w, "    n0 [label=\"\",shape=none,height=.0,width=.0]");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/models.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 83 |     writeln!(&mut w, "    node [shape=\"doublecircle\"]");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/models.rs:85:7
[INFO] [stdout]    |
[INFO] [stdout] 85 |       writeln!(&mut w, "    \"{}\"", a);
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/models.rs:87:5
[INFO] [stdout]    |
[INFO] [stdout] 87 |     writeln!(&mut w, "    node [shape=\"circle\"]");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/models.rs:88:5
[INFO] [stdout]    |
[INFO] [stdout] 88 |     writeln!(&mut w, "    n0 -> \"{}\"", self.nodes[0].name);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/models.rs:90:7
[INFO] [stdout]    |
[INFO] [stdout] 90 | /       writeln!(&mut w,
[INFO] [stdout] 91 | |         "    \"{}\" -> \"{}\" [label=\"{}\"]",
[INFO] [stdout] 92 | |         self.get_node(conn.from).name,
[INFO] [stdout] 93 | |         self.get_node(conn.to).name,
[INFO] [stdout] 94 | |         conn.symbols.join(","),
[INFO] [stdout] 95 | |       );
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/models.rs:97:5
[INFO] [stdout]    |
[INFO] [stdout] 97 |     writeln!(&mut w, "}}");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling eoautomata-core v0.1.0 (/opt/rustwide/workdir/core)
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling eoautomata-web v0.1.0 (/opt/rustwide/workdir/web)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/eoa.rs:87:13
[INFO] [stdout]    |
[INFO] [stdout] 87 | /             automata.push_or_merge_connection(Connection {
[INFO] [stdout] 88 | |               id: 0,
[INFO] [stdout] 89 | |               from: prev_node.take().unwrap(),
[INFO] [stdout] 90 | |               to: id,
[INFO] [stdout] 91 | |               symbols: prev_arrow_symbols.take().unwrap(),
[INFO] [stdout] 92 | |             });
[INFO] [stdout]    | |_______________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> core/src/eoa.rs:103:13
[INFO] [stdout]     |
[INFO] [stdout] 103 | /             automata.push_or_merge_connection(Connection {
[INFO] [stdout] 104 | |               id: 0,
[INFO] [stdout] 105 | |               from: id,
[INFO] [stdout] 106 | |               to: id,
[INFO] [stdout] 107 | |               symbols: node.stay.into_iter().copied().map(Box::from).collect(),
[INFO] [stdout] 108 | |             });
[INFO] [stdout]     | |_______________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/models.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 |     writeln!(&mut w, "digraph {{");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/models.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 80 |     writeln!(&mut w, "    rankdir = LR");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/models.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 |     writeln!(&mut w, "    splines = line");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/models.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 |     writeln!(&mut w, "    n0 [label=\"\",shape=none,height=.0,width=.0]");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/models.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 83 |     writeln!(&mut w, "    node [shape=\"doublecircle\"]");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/models.rs:85:7
[INFO] [stdout]    |
[INFO] [stdout] 85 |       writeln!(&mut w, "    \"{}\"", a);
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/models.rs:87:5
[INFO] [stdout]    |
[INFO] [stdout] 87 |     writeln!(&mut w, "    node [shape=\"circle\"]");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/models.rs:88:5
[INFO] [stdout]    |
[INFO] [stdout] 88 |     writeln!(&mut w, "    n0 -> \"{}\"", self.nodes[0].name);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/models.rs:90:7
[INFO] [stdout]    |
[INFO] [stdout] 90 | /       writeln!(&mut w,
[INFO] [stdout] 91 | |         "    \"{}\" -> \"{}\" [label=\"{}\"]",
[INFO] [stdout] 92 | |         self.get_node(conn.from).name,
[INFO] [stdout] 93 | |         self.get_node(conn.to).name,
[INFO] [stdout] 94 | |         conn.symbols.join(","),
[INFO] [stdout] 95 | |       );
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> core/src/models.rs:97:5
[INFO] [stdout]    |
[INFO] [stdout] 97 |     writeln!(&mut w, "}}");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "4428d53ca717028a5f8165a57afcec64ff62aaef6b82fe8bf0fd8612aacbbc9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4428d53ca717028a5f8165a57afcec64ff62aaef6b82fe8bf0fd8612aacbbc9d", kill_on_drop: false }`
[INFO] [stdout] 4428d53ca717028a5f8165a57afcec64ff62aaef6b82fe8bf0fd8612aacbbc9d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3a6d43faad3739c448faf1262aa2882df2c7fb71adc14274f4f1a2fea9e61aaf
[INFO] running `Command { std: "docker" "start" "-a" "3a6d43faad3739c448faf1262aa2882df2c7fb71adc14274f4f1a2fea9e61aaf", kill_on_drop: false }`
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> core/src/eoa.rs:87:13
[INFO] [stderr]    |
[INFO] [stderr] 87 | /             automata.push_or_merge_connection(Connection {
[INFO] [stderr] 88 | |               id: 0,
[INFO] [stderr] 89 | |               from: prev_node.take().unwrap(),
[INFO] [stderr] 90 | |               to: id,
[INFO] [stderr] 91 | |               symbols: prev_arrow_symbols.take().unwrap(),
[INFO] [stderr] 92 | |             });
[INFO] [stderr]    | |_______________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> core/src/eoa.rs:103:13
[INFO] [stderr]     |
[INFO] [stderr] 103 | /             automata.push_or_merge_connection(Connection {
[INFO] [stderr] 104 | |               id: 0,
[INFO] [stderr] 105 | |               from: id,
[INFO] [stderr] 106 | |               to: id,
[INFO] [stderr] 107 | |               symbols: node.stay.into_iter().copied().map(Box::from).collect(),
[INFO] [stderr] 108 | |             });
[INFO] [stderr]     | |_______________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> core/src/models.rs:79:5
[INFO] [stderr]    |
[INFO] [stderr] 79 |     writeln!(&mut w, "digraph {{");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> core/src/models.rs:80:5
[INFO] [stderr]    |
[INFO] [stderr] 80 |     writeln!(&mut w, "    rankdir = LR");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> core/src/models.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 |     writeln!(&mut w, "    splines = line");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> core/src/models.rs:82:5
[INFO] [stderr]    |
[INFO] [stderr] 82 |     writeln!(&mut w, "    n0 [label=\"\",shape=none,height=.0,width=.0]");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> core/src/models.rs:83:5
[INFO] [stderr]    |
[INFO] [stderr] 83 |     writeln!(&mut w, "    node [shape=\"doublecircle\"]");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> core/src/models.rs:85:7
[INFO] [stderr]    |
[INFO] [stderr] 85 |       writeln!(&mut w, "    \"{}\"", a);
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> core/src/models.rs:87:5
[INFO] [stderr]    |
[INFO] [stderr] 87 |     writeln!(&mut w, "    node [shape=\"circle\"]");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> core/src/models.rs:88:5
[INFO] [stderr]    |
[INFO] [stderr] 88 |     writeln!(&mut w, "    n0 -> \"{}\"", self.nodes[0].name);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> core/src/models.rs:90:7
[INFO] [stderr]    |
[INFO] [stderr] 90 | /       writeln!(&mut w,
[INFO] [stderr] 91 | |         "    \"{}\" -> \"{}\" [label=\"{}\"]",
[INFO] [stderr] 92 | |         self.get_node(conn.from).name,
[INFO] [stderr] 93 | |         self.get_node(conn.to).name,
[INFO] [stderr] 94 | |         conn.symbols.join(","),
[INFO] [stderr] 95 | |       );
[INFO] [stderr]    | |_______^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> core/src/models.rs:97:5
[INFO] [stderr]    |
[INFO] [stderr] 97 |     writeln!(&mut w, "}}");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `eoautomata-core` (lib) generated 12 warnings
[INFO] [stderr] warning: `eoautomata-core` (lib test) generated 12 warnings (12 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/eoautomata_core-88a3f6da8130dcac)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/eoautomata_web-9de02ba2ebf36835)
[INFO] [stdout] test eoa::tests::tokenize ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[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] [stderr]    Doc-tests eoautomata-core
[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] [stderr]    Doc-tests eoautomata-web
[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" "3a6d43faad3739c448faf1262aa2882df2c7fb71adc14274f4f1a2fea9e61aaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a6d43faad3739c448faf1262aa2882df2c7fb71adc14274f4f1a2fea9e61aaf", kill_on_drop: false }`
[INFO] [stdout] 3a6d43faad3739c448faf1262aa2882df2c7fb71adc14274f4f1a2fea9e61aaf