[INFO] fetching crate taskpool 0.1.0...
[INFO] testing taskpool-0.1.0 against 1.75.0 for beta-1.76-1
[INFO] extracting crate taskpool 0.1.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate taskpool 0.1.0 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate taskpool 0.1.0
[INFO] finished tweaking crates.io crate taskpool 0.1.0
[INFO] tweaked toml for crates.io crate taskpool 0.1.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded stainless v0.1.12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e5c3cba8f30fd322d75b7dc7d70bf27d60351a7bf13423d0206a22b31970f276
[INFO] running `Command { std: "docker" "start" "-a" "e5c3cba8f30fd322d75b7dc7d70bf27d60351a7bf13423d0206a22b31970f276", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5c3cba8f30fd322d75b7dc7d70bf27d60351a7bf13423d0206a22b31970f276", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5c3cba8f30fd322d75b7dc7d70bf27d60351a7bf13423d0206a22b31970f276", kill_on_drop: false }`
[INFO] [stdout] e5c3cba8f30fd322d75b7dc7d70bf27d60351a7bf13423d0206a22b31970f276
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 87412905ff2c95b164e3090702cbdb1b2e35ae22cd1b20feabb6af9bbe8f984e
[INFO] running `Command { std: "docker" "start" "-a" "87412905ff2c95b164e3090702cbdb1b2e35ae22cd1b20feabb6af9bbe8f984e", kill_on_drop: false }`
[INFO] [stderr]    Compiling taskpool v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected one of `)`, `,`, `.`, `?`, or an operator, found `{`
[INFO] [stdout]   --> src/lib.rs:47:22
[INFO] [stdout]    |
[INFO] [stdout] 47 |         spawn(proc() {
[INFO] [stdout]    |                     -^ expected one of `)`, `,`, `.`, `?`, or an operator
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: missing `,`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected parameter name, found `:`
[INFO] [stdout]   --> src/lib.rs:65:42
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn execute(&mut self, job: proc(): Send) {
[INFO] [stdout]    |                                          ^ expected parameter name
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected one of `!`, `)`, `+`, `,`, `->`, or `::`, found `:`
[INFO] [stdout]   --> src/lib.rs:65:42
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn execute(&mut self, job: proc(): Send) {
[INFO] [stdout]    |                                          ^
[INFO] [stdout]    |                                          |
[INFO] [stdout]    |                                          expected one of `!`, `)`, `+`, `,`, `->`, or `::`
[INFO] [stdout]    |                                          help: missing `,`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected one of `)`, `,`, `.`, `?`, or an operator, found `{`
[INFO] [stdout]   --> src/lib.rs:79:18
[INFO] [stdout]    |
[INFO] [stdout] 79 |     spawn(proc() {
[INFO] [stdout]    |                 -^ expected one of `)`, `,`, `.`, `?`, or an operator
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: missing `,`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `license` in this scope
[INFO] [stdout]  --> src/lib.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![license = "MIT"]
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Sender` in this scope
[INFO] [stdout]   --> src/lib.rs:16:14
[INFO] [stdout]    |
[INFO] [stdout] 16 |     monitor: Sender<MonitorMessage>
[INFO] [stdout]    |              ^^^^^^
[INFO] [stdout]   --> /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/marker.rs:82:1
[INFO] [stdout]    |
[INFO] [stdout]    = note: similarly named trait `Send` defined here
[INFO] [stdout]    |
[INFO] [stdout] help: a trait with a similar name exists
[INFO] [stdout]    |
[INFO] [stdout] 16 |     monitor: Send<MonitorMessage>
[INFO] [stdout]    |              ~~~~
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 8  + use std::sync::mpsc::Sender;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `Died` in this scope
[INFO] [stdout]   --> src/lib.rs:22:39
[INFO] [stdout]    |
[INFO] [stdout] 22 |         let _ = self.monitor.send_opt(Died);
[INFO] [stdout]    |                                       ^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this unit variant
[INFO] [stdout]    |
[INFO] [stdout] 8  + use MonitorMessage::Died;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Sender` in this scope
[INFO] [stdout]   --> src/lib.rs:30:11
[INFO] [stdout]    |
[INFO] [stdout] 30 |     jobs: Sender<proc(): Send>,
[INFO] [stdout]    |           ^^^^^^
[INFO] [stdout]   --> /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/marker.rs:82:1
[INFO] [stdout]    |
[INFO] [stdout]    = note: similarly named trait `Send` defined here
[INFO] [stdout]    |
[INFO] [stdout] help: a trait with a similar name exists
[INFO] [stdout]    |
[INFO] [stdout] 30 |     jobs: Send<proc(): Send>,
[INFO] [stdout]    |           ~~~~
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 8  + use std::sync::mpsc::Sender;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Sender` in this scope
[INFO] [stdout]   --> src/lib.rs:31:14
[INFO] [stdout]    |
[INFO] [stdout] 31 |     monitor: Sender<MonitorMessage>,
[INFO] [stdout]    |              ^^^^^^
[INFO] [stdout]   --> /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/marker.rs:82:1
[INFO] [stdout]    |
[INFO] [stdout]    = note: similarly named trait `Send` defined here
[INFO] [stdout]    |
[INFO] [stdout] help: a trait with a similar name exists
[INFO] [stdout]    |
[INFO] [stdout] 31 |     monitor: Send<MonitorMessage>,
[INFO] [stdout]    |              ~~~~
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 8  + use std::sync::mpsc::Sender;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `uint` in this scope
[INFO] [stdout]   --> src/lib.rs:36:23
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn new(tasks: uint) -> TaskPool {
[INFO] [stdout]    |                       ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `channel` in this scope
[INFO] [stdout]   --> src/lib.rs:37:32
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let (job_tx, job_rx) = channel::<proc(): Send>();
[INFO] [stdout]    |                                ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]    |
[INFO] [stdout] 8  + use std::sync::mpsc::channel;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `channel` in this scope
[INFO] [stdout]   --> src/lib.rs:39:34
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let (quit_tx, quit_rx) = channel::<MonitorMessage>();
[INFO] [stdout]    |                                  ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]    |
[INFO] [stdout] 8  + use std::sync::mpsc::channel;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `spawn` in this scope
[INFO] [stdout]   --> src/lib.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |         spawn(proc() {
[INFO] [stdout]    |         ^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]    |
[INFO] [stdout] 8  + use std::thread::spawn;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `range` in this scope
[INFO] [stdout]   --> src/lib.rs:57:18
[INFO] [stdout]    |
[INFO] [stdout] 57 |         for _ in range(0, tasks) {
[INFO] [stdout]    |                  ^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]    |
[INFO] [stdout] 8  + use std::slice::range;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `proc` in this scope
[INFO] [stdout]   --> src/lib.rs:65:36
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn execute(&mut self, job: proc(): Send) {
[INFO] [stdout]    |                                    ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `Kill` in this scope
[INFO] [stdout]   --> src/lib.rs:73:27
[INFO] [stdout]    |
[INFO] [stdout] 73 |         self.monitor.send(Kill);
[INFO] [stdout]    |                           ^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this unit variant
[INFO] [stdout]    |
[INFO] [stdout] 8  + use MonitorMessage::Kill;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Receiver` in this scope
[INFO] [stdout]   --> src/lib.rs:77:34
[INFO] [stdout]    |
[INFO] [stdout] 77 | fn spawn_in_pool(jobs: Arc<Mutex<Receiver<proc(): Send>>>,
[INFO] [stdout]    |                                  ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 8  + use std::ops::Receiver;
[INFO] [stdout]    |
[INFO] [stdout] 8  + use std::sync::mpsc::Receiver;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Sender` in this scope
[INFO] [stdout]   --> src/lib.rs:78:27
[INFO] [stdout]    |
[INFO] [stdout] 78 |                  monitor: Sender<MonitorMessage>) {
[INFO] [stdout]    |                           ^^^^^^
[INFO] [stdout]   --> /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/marker.rs:82:1
[INFO] [stdout]    |
[INFO] [stdout]    = note: similarly named trait `Send` defined here
[INFO] [stdout]    |
[INFO] [stdout] help: a trait with a similar name exists
[INFO] [stdout]    |
[INFO] [stdout] 78 |                  monitor: Send<MonitorMessage>) {
[INFO] [stdout]    |                           ~~~~
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 8  + use std::sync::mpsc::Sender;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `spawn` in this scope
[INFO] [stdout]   --> src/lib.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 |     spawn(proc() {
[INFO] [stdout]    |     ^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]    |
[INFO] [stdout] 8  + use std::thread::spawn;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: return type notation is experimental
[INFO] [stdout]   --> src/lib.rs:30:18
[INFO] [stdout]    |
[INFO] [stdout] 30 |     jobs: Sender<proc(): Send>,
[INFO] [stdout]    |                  ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #109417 <https://github.com/rust-lang/rust/issues/109417> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: return type notation is experimental
[INFO] [stdout]   --> src/lib.rs:37:42
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let (job_tx, job_rx) = channel::<proc(): Send>();
[INFO] [stdout]    |                                          ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #109417 <https://github.com/rust-lang/rust/issues/109417> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: return type notation is experimental
[INFO] [stdout]   --> src/lib.rs:77:43
[INFO] [stdout]    |
[INFO] [stdout] 77 | fn spawn_in_pool(jobs: Arc<Mutex<Receiver<proc(): Send>>>,
[INFO] [stdout]    |                                           ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #109417 <https://github.com/rust-lang/rust/issues/109417> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: parenthesized generic arguments cannot be used in associated type constraints
[INFO] [stdout]   --> src/lib.rs:30:18
[INFO] [stdout]    |
[INFO] [stdout] 30 |     jobs: Sender<proc(): Send>,
[INFO] [stdout]    |                  ^^^^--
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: parenthesized generic arguments cannot be used in associated type constraints
[INFO] [stdout]   --> src/lib.rs:37:42
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let (job_tx, job_rx) = channel::<proc(): Send>();
[INFO] [stdout]    |                                          ^^^^--
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: parenthesized generic arguments cannot be used in associated type constraints
[INFO] [stdout]   --> src/lib.rs:77:43
[INFO] [stdout]    |
[INFO] [stdout] 77 | fn spawn_in_pool(jobs: Arc<Mutex<Receiver<proc(): Send>>>,
[INFO] [stdout]    |                                           ^^^^--
[INFO] [stdout]    |                                               |
[INFO] [stdout]    |                                               help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `proc` in this scope
[INFO] [stdout]   --> src/lib.rs:47:15
[INFO] [stdout]    |
[INFO] [stdout] 47 |         spawn(proc() {
[INFO] [stdout]    |               ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `proc` in this scope
[INFO] [stdout]   --> src/lib.rs:79:11
[INFO] [stdout]    |
[INFO] [stdout] 79 |     spawn(proc() {
[INFO] [stdout]    |           ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 27 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0412, E0425, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `taskpool` (lib) due to 28 previous errors
[INFO] running `Command { std: "docker" "inspect" "87412905ff2c95b164e3090702cbdb1b2e35ae22cd1b20feabb6af9bbe8f984e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87412905ff2c95b164e3090702cbdb1b2e35ae22cd1b20feabb6af9bbe8f984e", kill_on_drop: false }`
[INFO] [stdout] 87412905ff2c95b164e3090702cbdb1b2e35ae22cd1b20feabb6af9bbe8f984e
