[INFO] fetching crate sauron-native 0.1.0...
[INFO] checking sauron-native-0.1.0 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate sauron-native 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate sauron-native 0.1.0 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sauron-native 0.1.0
[INFO] finished tweaking crates.io crate sauron-native 0.1.0
[INFO] tweaked toml for crates.io crate sauron-native 0.1.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate sauron-native 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded itui v0.7.0
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.3.25
[INFO] [stderr]   Downloaded wasm-bindgen-test-macro v0.2.48
[INFO] [stderr]   Downloaded sauron v0.10.0
[INFO] [stderr]   Downloaded js-sys v0.3.25
[INFO] [stderr]   Downloaded web-sys v0.3.25
[INFO] [stderr]   Downloaded wasm-bindgen-test v0.2.48
[INFO] [stderr]   Downloaded wasm-bindgen-webidl v0.2.48
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 20510d1e97dcec97423c279e8ef6a10797aefe49b7f00c578c34ee4add0d855f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "20510d1e97dcec97423c279e8ef6a10797aefe49b7f00c578c34ee4add0d855f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "20510d1e97dcec97423c279e8ef6a10797aefe49b7f00c578c34ee4add0d855f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20510d1e97dcec97423c279e8ef6a10797aefe49b7f00c578c34ee4add0d855f", kill_on_drop: false }`
[INFO] [stdout] 20510d1e97dcec97423c279e8ef6a10797aefe49b7f00c578c34ee4add0d855f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 01c1a39774f20db7a629cb546c37f1a14dde4cff4ac3d2773fd9f1fced32ec0e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "01c1a39774f20db7a629cb546c37f1a14dde4cff4ac3d2773fd9f1fced32ec0e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]    Compiling syn v0.15.42
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling log v0.4.7
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.48
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling bumpalo v2.5.0
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.48
[INFO] [stderr]    Compiling cc v1.0.38
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking rustc-demangle v0.1.15
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking futures v0.1.28
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking sauron_vdom v0.10.0
[INFO] [stderr]     Checking termcolor v0.3.6
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking sauron-native v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stdout] warning: unused imports: `Node`, `Widget`
[INFO] [stdout]  --> src/backend.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{Component, Node, Widget};
[INFO] [stdout]   |                        ^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Node`
[INFO] [stdout]  --> src/program.rs:1:42
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{backend::Backend, Component, Node};
[INFO] [stdout]   |                                          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cell::RefCell`
[INFO] [stdout]  --> src/program.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{cell::RefCell, fmt::Debug, marker::PhantomData, rc::Rc};
[INFO] [stdout]   |           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `event`
[INFO] [stdout]  --> src/component.rs:6:28
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn on_event(&mut self, event: Event) {
[INFO] [stdout]   |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_event`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/component.rs:10:25
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn debug(&mut self, s: String) {
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/program.rs:32:38
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn dispatch(self: &Rc<Self>, msg: MSG) {
[INFO] [stdout]    |                                      ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `type_alias_enum_variants` has been stable since 1.37.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(type_alias_enum_variants)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.2.48
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking backtrace v0.3.33
[INFO] [stderr]     Checking chrono v0.4.7
[INFO] [stderr]     Checking stderrlog v0.4.1
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.48
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.48
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.48
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking structopt v0.2.18
[INFO] [stderr]     Checking js-sys v0.3.25
[INFO] [stderr]     Checking console_error_panic_hook v0.1.6
[INFO] [stderr]     Checking wasm-bindgen-futures v0.3.25
[INFO] [stderr]     Checking wasm-bindgen-test v0.2.48
[INFO] [stdout] warning: unused imports: `Node`, `Widget`
[INFO] [stdout]  --> src/backend.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{Component, Node, Widget};
[INFO] [stdout]   |                        ^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Node`
[INFO] [stdout]  --> src/program.rs:1:42
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{backend::Backend, Component, Node};
[INFO] [stdout]   |                                          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cell::RefCell`
[INFO] [stdout]  --> src/program.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{cell::RefCell, fmt::Debug, marker::PhantomData, rc::Rc};
[INFO] [stdout]   |           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `event`
[INFO] [stdout]  --> src/component.rs:6:28
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn on_event(&mut self, event: Event) {
[INFO] [stdout]   |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_event`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/component.rs:10:25
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn debug(&mut self, s: String) {
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/program.rs:32:38
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn dispatch(self: &Rc<Self>, msg: MSG) {
[INFO] [stdout]    |                                      ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `type_alias_enum_variants` has been stable since 1.37.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(type_alias_enum_variants)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 14s
[INFO] running `Command { std: "docker" "inspect" "01c1a39774f20db7a629cb546c37f1a14dde4cff4ac3d2773fd9f1fced32ec0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01c1a39774f20db7a629cb546c37f1a14dde4cff4ac3d2773fd9f1fced32ec0e", kill_on_drop: false }`
[INFO] [stdout] 01c1a39774f20db7a629cb546c37f1a14dde4cff4ac3d2773fd9f1fced32ec0e