[INFO] cloning repository https://github.com/zongzi531/rust-learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zongzi531/rust-learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzongzi531%2Frust-learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzongzi531%2Frust-learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dcf7c60aecad6474095e9df0da0409a19ff70b09
[INFO] checking zongzi531/rust-learning against try#c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f for pr-133502-17
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzongzi531%2Frust-learning" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/zongzi531/rust-learning
[INFO] finished tweaking git repo https://github.com/zongzi531/rust-learning
[INFO] tweaked toml for git repo https://github.com/zongzi531/rust-learning written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/zongzi531/rust-learning on toolchain c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/zongzi531/rust-learning 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" "+c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e9eef64d09304b80dc9ad42e1f6b1f4c3bbd586b5f053acc17083680670776cf
[INFO] running `Command { std: "docker" "start" "-a" "e9eef64d09304b80dc9ad42e1f6b1f4c3bbd586b5f053acc17083680670776cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e9eef64d09304b80dc9ad42e1f6b1f4c3bbd586b5f053acc17083680670776cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9eef64d09304b80dc9ad42e1f6b1f4c3bbd586b5f053acc17083680670776cf", kill_on_drop: false }`
[INFO] [stdout] e9eef64d09304b80dc9ad42e1f6b1f4c3bbd586b5f053acc17083680670776cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 81e293ded5c47e85d92112d9389ace4486ee8c07363cd9843d63f05ef21440cc
[INFO] running `Command { std: "docker" "start" "-a" "81e293ded5c47e85d92112d9389ace4486ee8c07363cd9843d63f05ef21440cc", kill_on_drop: false }`
[INFO] [stderr]     Checking utf8_slice v1.0.0
[INFO] [stderr]     Checking rust-learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]  --> src/bin/flow-control-4.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 |   for name in &names {
[INFO] [stdout]   |       ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/bin/flow-control-4.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 |   for n in numbers {
[INFO] [stdout]    |       ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0001]: `-Znext-solver=globally` and `generic_const_exprs` are incompatible, using them at the same time is not allowed
[INFO] [stdout]  --> src/bin/generics-traits-const-generics-3.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(generic_const_exprs)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: remove one of these features
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0001`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-learning` (bin "generics-traits-const-generics-3") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused import: `std::fmt::Result`
[INFO] [stdout]  --> src/bin/crate-module-use-pub-1.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::Result;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Result as IoResult`
[INFO] [stdout]  --> src/bin/crate-module-use-pub-1.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::Result as IoResult;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]   --> src/bin/pattern-match-match-iflet-7.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 |   if let Foo::Bar(i) = a {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]    = help: consider replacing the `if let` with a `let`
[INFO] [stdout]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/bin/pattern-match-match-iflet-8.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 |   Qux(u32)
[INFO] [stdout]   |   --- ^^^
[INFO] [stdout]   |   |
[INFO] [stdout]   |   field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 5 -   Qux(u32)
[INFO] [stdout] 5 +   Qux(())
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Bar` and `Baz` are never constructed
[INFO] [stdout]  --> src/bin/pattern-match-match-iflet-8.rs:3:3
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum Foo {
[INFO] [stdout]   |      --- variants in this enum
[INFO] [stdout] 3 |   Bar,
[INFO] [stdout]   |   ^^^
[INFO] [stdout] 4 |   Baz,
[INFO] [stdout]   |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TrafficLight` is never constructed
[INFO] [stdout]  --> src/bin/method-3.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct TrafficLight {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `show_state` and `change_state` are never used
[INFO] [stdout]   --> src/bin/method-3.rs:7:10
[INFO] [stdout]    |
[INFO] [stdout]  5 | impl TrafficLight {
[INFO] [stdout]    | ----------------- methods in this implementation
[INFO] [stdout]  6 |   // 使用 `Self` 填空
[INFO] [stdout]  7 |   pub fn show_state(self: &Self)  {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 12 |   pub fn change_state(mut self) {
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]  --> src/bin/type-conversions-as-2.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 |   let v = 1000 as u8;
[INFO] [stdout]   |       ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `fly` is never used
[INFO] [stdout]   --> src/bin/generics-traits-trait-object-1.rs:14:6
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Swan {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 14 |   fn fly(&self) {
[INFO] [stdout]    |      ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "81e293ded5c47e85d92112d9389ace4486ee8c07363cd9843d63f05ef21440cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81e293ded5c47e85d92112d9389ace4486ee8c07363cd9843d63f05ef21440cc", kill_on_drop: false }`
[INFO] [stdout] 81e293ded5c47e85d92112d9389ace4486ee8c07363cd9843d63f05ef21440cc
