[INFO] cloning repository https://github.com/faiface/par-lang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/faiface/par-lang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffaiface%2Fpar-lang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffaiface%2Fpar-lang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d430a42fd5c63e3bc6c343f7477ebc5dbadf81c8
[INFO] checking faiface/par-lang against try#1f5783cbeb5da8b38566d718631d016891e9c912 for pr-142704
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffaiface%2Fpar-lang" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/faiface/par-lang on toolchain 1f5783cbeb5da8b38566d718631d016891e9c912
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f5783cbeb5da8b38566d718631d016891e9c912" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/faiface/par-lang
[INFO] finished tweaking git repo https://github.com/faiface/par-lang
[INFO] tweaked toml for git repo https://github.com/faiface/par-lang written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/faiface/par-lang 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" "+1f5783cbeb5da8b38566d718631d016891e9c912" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+1f5783cbeb5da8b38566d718631d016891e9c912" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 346eb410267a67e2aa675fbe4364bb48e4f13bdb792a63ff2f38dc80977a38f6
[INFO] running `Command { std: "docker" "start" "-a" "346eb410267a67e2aa675fbe4364bb48e4f13bdb792a63ff2f38dc80977a38f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "346eb410267a67e2aa675fbe4364bb48e4f13bdb792a63ff2f38dc80977a38f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "346eb410267a67e2aa675fbe4364bb48e4f13bdb792a63ff2f38dc80977a38f6", kill_on_drop: false }`
[INFO] [stdout] 346eb410267a67e2aa675fbe4364bb48e4f13bdb792a63ff2f38dc80977a38f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+1f5783cbeb5da8b38566d718631d016891e9c912" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "aacdd704f285900964469ea50ec087032989576b8c2994d373b6721a6bb349c7", kill_on_drop: false }`
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[INFO] [stderr]     Checking accesskit_unix v0.13.1
[INFO] [stderr]     Checking accesskit_winit v0.23.1
[INFO] [stderr]     Checking egui-winit v0.31.1
[INFO] [stderr]     Checking eframe v0.31.1
[INFO] [stderr]     Checking par-lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `BTreeSet`
[INFO] [stdout]  --> src/icombs/equivalence.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::{BTreeMap, BTreeSet};
[INFO] [stdout]   |                                  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Net`
[INFO] [stdout]  --> src/icombs/equivalence.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 | use super::{Net, Tree, VarId};
[INFO] [stdout]   |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BTreeSet`
[INFO] [stdout]  --> src/icombs/equivalence.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::{BTreeMap, BTreeSet};
[INFO] [stdout]   |                                  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Net`
[INFO] [stdout]  --> src/icombs/equivalence.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 | use super::{Net, Tree, VarId};
[INFO] [stdout]   |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `uniqueify_vars` is never used
[INFO] [stdout]  --> src/icombs/equivalence.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn uniqueify_vars(mut tree: Tree, new_id: &mut usize) -> (Tree, BTreeMap<usize, usize>) {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `VARIABLE` is never used
[INFO] [stdout]    --> src/language_server/data.rs:122:39
[INFO] [stdout]     |
[INFO] [stdout] 122 | semantic_token_types!(TYPE, FUNCTION, VARIABLE);
[INFO] [stdout]     |                                       ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `running_constants` which comes from the expansion of the macro `semantic_token_types` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MODIFICATION` is never used
[INFO] [stdout]    --> src/language_server/data.rs:123:62
[INFO] [stdout]     |
[INFO] [stdout] 123 | semantic_token_modifiers!(DECLARATION, DEFINITION, READONLY, MODIFICATION);
[INFO] [stdout]     |                                                              ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `running_constants` which comes from the expansion of the macro `semantic_token_modifiers` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `initialize_params` is never read
[INFO] [stdout]   --> src/language_server/server.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct LanguageServer<'c> {
[INFO] [stdout]    |            -------------- field in this struct
[INFO] [stdout] 18 |     connection: &'c Connection,
[INFO] [stdout] 19 |     initialize_params: InitializeParams,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `blue` is never used
[INFO] [stdout]    --> src/playground.rs:661:4
[INFO] [stdout]     |
[INFO] [stdout] 661 | fn blue() -> egui::Color32 {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/icombs/readback.rs:252:32
[INFO] [stdout]     |
[INFO] [stdout] 252 |     pub fn flatten_multiplexed(&self, tree: Tree, len: usize) -> BoxFuture<Vec<Tree>> {
[INFO] [stdout]     |                                ^^^^^                             -------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 252 |     pub fn flatten_multiplexed(&self, tree: Tree, len: usize) -> BoxFuture<'_, Vec<Tree>> {
[INFO] [stdout]     |                                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/icombs/readback.rs:349:25
[INFO] [stdout]     |
[INFO] [stdout] 349 |     pub fn as_with_type(&self, port: PortContents, ty: Type<Name>) -> BoxFuture<ReadbackResult> {
[INFO] [stdout]     |                         ^^^^^ this lifetime flows to the output       ------------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 349 |     pub fn as_with_type(&self, port: PortContents, ty: Type<Name>) -> BoxFuture<'_, ReadbackResult> {
[INFO] [stdout]     |                                                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/readback.rs:391:9
[INFO] [stdout]     |
[INFO] [stdout] 391 |         &mut self,
[INFO] [stdout]     |         ^^^^^^^^^ this lifetime flows to the output
[INFO] [stdout] ...
[INFO] [stdout] 395 |     ) -> BoxFuture<()> {
[INFO] [stdout]     |          ------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 395 |     ) -> BoxFuture<'_, ()> {
[INFO] [stdout]     |                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `uniqueify_vars` is never used
[INFO] [stdout]  --> src/icombs/equivalence.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn uniqueify_vars(mut tree: Tree, new_id: &mut usize) -> (Tree, BTreeMap<usize, usize>) {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `VARIABLE` is never used
[INFO] [stdout]    --> src/language_server/data.rs:122:39
[INFO] [stdout]     |
[INFO] [stdout] 122 | semantic_token_types!(TYPE, FUNCTION, VARIABLE);
[INFO] [stdout]     |                                       ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `running_constants` which comes from the expansion of the macro `semantic_token_types` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MODIFICATION` is never used
[INFO] [stdout]    --> src/language_server/data.rs:123:62
[INFO] [stdout]     |
[INFO] [stdout] 123 | semantic_token_modifiers!(DECLARATION, DEFINITION, READONLY, MODIFICATION);
[INFO] [stdout]     |                                                              ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `running_constants` which comes from the expansion of the macro `semantic_token_modifiers` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `initialize_params` is never read
[INFO] [stdout]   --> src/language_server/server.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct LanguageServer<'c> {
[INFO] [stdout]    |            -------------- field in this struct
[INFO] [stdout] 18 |     connection: &'c Connection,
[INFO] [stdout] 19 |     initialize_params: InitializeParams,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `blue` is never used
[INFO] [stdout]    --> src/playground.rs:661:4
[INFO] [stdout]     |
[INFO] [stdout] 661 | fn blue() -> egui::Color32 {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Choice` and `Any` are never constructed
[INFO] [stdout]   --> src/tests.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub enum ReadbackPattern<Name: Clone> {
[INFO] [stdout]    |          --------------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 35 |     Choice(Name, Box<ReadbackPattern<Name>>),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 36 |     Any,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ReadbackPattern` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `net` is never read
[INFO] [stdout]   --> src/tests.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub struct TestingState {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 74 |     pub net: Arc<Mutex<Net>>,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Pattern` is never constructed
[INFO] [stdout]    --> src/tests.rs:195:5
[INFO] [stdout]     |
[INFO] [stdout] 194 | pub enum TestPattern {
[INFO] [stdout]     |          ----------- variant in this enum
[INFO] [stdout] 195 |     Pattern(ReadbackPattern<Name>),
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/icombs/readback.rs:252:32
[INFO] [stdout]     |
[INFO] [stdout] 252 |     pub fn flatten_multiplexed(&self, tree: Tree, len: usize) -> BoxFuture<Vec<Tree>> {
[INFO] [stdout]     |                                ^^^^^                             -------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 252 |     pub fn flatten_multiplexed(&self, tree: Tree, len: usize) -> BoxFuture<'_, Vec<Tree>> {
[INFO] [stdout]     |                                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/icombs/readback.rs:349:25
[INFO] [stdout]     |
[INFO] [stdout] 349 |     pub fn as_with_type(&self, port: PortContents, ty: Type<Name>) -> BoxFuture<ReadbackResult> {
[INFO] [stdout]     |                         ^^^^^ this lifetime flows to the output       ------------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 349 |     pub fn as_with_type(&self, port: PortContents, ty: Type<Name>) -> BoxFuture<'_, ReadbackResult> {
[INFO] [stdout]     |                                                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/readback.rs:391:9
[INFO] [stdout]     |
[INFO] [stdout] 391 |         &mut self,
[INFO] [stdout]     |         ^^^^^^^^^ this lifetime flows to the output
[INFO] [stdout] ...
[INFO] [stdout] 395 |     ) -> BoxFuture<()> {
[INFO] [stdout]     |          ------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 395 |     ) -> BoxFuture<'_, ()> {
[INFO] [stdout]     |                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/tests.rs:79:26
[INFO] [stdout]    |
[INFO] [stdout] 79 |     fn result_to_pattern(&self, result: ReadbackResult) -> BoxFuture<ReadbackPattern<Name>> {
[INFO] [stdout]    |                          ^^^^^                             -------------------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 79 |     fn result_to_pattern(&self, result: ReadbackResult) -> BoxFuture<'_, ReadbackPattern<Name>> {
[INFO] [stdout]    |                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/tests.rs:125:9
[INFO] [stdout]     |
[INFO] [stdout] 125 |         &self,
[INFO] [stdout]     |         ^^^^^ this lifetime flows to the output
[INFO] [stdout] ...
[INFO] [stdout] 128 |     ) -> BoxFuture<TestingResult> {
[INFO] [stdout]     |          ------------------------ the lifetime gets resolved as `'_`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 128 |     ) -> BoxFuture<'_, TestingResult> {
[INFO] [stdout]     |                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 43s
[INFO] running `Command { std: "docker" "inspect" "aacdd704f285900964469ea50ec087032989576b8c2994d373b6721a6bb349c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aacdd704f285900964469ea50ec087032989576b8c2994d373b6721a6bb349c7", kill_on_drop: false }`
[INFO] [stdout] aacdd704f285900964469ea50ec087032989576b8c2994d373b6721a6bb349c7
