[INFO] cloning repository https://github.com/wzp-coding/study-workspace
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wzp-coding/study-workspace" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwzp-coding%2Fstudy-workspace", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwzp-coding%2Fstudy-workspace'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b9cc96ddddc61f36cbe49c66e9c8195c491599a1
[INFO] testing wzp-coding/study-workspace against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwzp-coding%2Fstudy-workspace" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/wzp-coding/study-workspace
[INFO] finished tweaking git repo https://github.com/wzp-coding/study-workspace
[INFO] tweaked toml for git repo https://github.com/wzp-coding/study-workspace written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/wzp-coding/study-workspace on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/wzp-coding/study-workspace 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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 717167c2ea3a469ad7ffbdaf2d4bfff4187203a035e3c77926149309a8cdab63
[INFO] running `Command { std: "docker" "start" "-a" "717167c2ea3a469ad7ffbdaf2d4bfff4187203a035e3c77926149309a8cdab63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "717167c2ea3a469ad7ffbdaf2d4bfff4187203a035e3c77926149309a8cdab63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "717167c2ea3a469ad7ffbdaf2d4bfff4187203a035e3c77926149309a8cdab63", kill_on_drop: false }`
[INFO] [stdout] 717167c2ea3a469ad7ffbdaf2d4bfff4187203a035e3c77926149309a8cdab63
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f0cab5e2801d4a720a8f647b288a2be58a59ceadda78197fa9a098b82afd752e
[INFO] running `Command { std: "docker" "start" "-a" "f0cab5e2801d4a720a8f647b288a2be58a59ceadda78197fa9a098b82afd752e", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling pkg-config v0.3.30
[INFO] [stderr]    Compiling cc v1.0.90
[INFO] [stderr]    Compiling autocfg v1.2.0
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]    Compiling socket2 v0.5.6
[INFO] [stderr]    Compiling mio v0.8.11
[INFO] [stderr]    Compiling tracing-core v0.1.32
[INFO] [stderr]    Compiling memchr v2.7.2
[INFO] [stderr]    Compiling openssl v0.10.64
[INFO] [stderr]    Compiling http v1.1.0
[INFO] [stderr]    Compiling indexmap v2.2.6
[INFO] [stderr]    Compiling bitflags v2.5.0
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling anstyle-parse v0.2.3
[INFO] [stderr]    Compiling unicode-normalization v0.1.23
[INFO] [stderr]    Compiling anstyle v1.0.6
[INFO] [stderr]    Compiling anstyle-query v1.0.2
[INFO] [stderr]    Compiling colorchoice v1.0.0
[INFO] [stderr]    Compiling ryu v1.0.17
[INFO] [stderr]    Compiling ipnet v2.9.0
[INFO] [stderr]    Compiling anstream v0.6.13
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling minigrep v0.1.0 (/opt/rustwide/workdir/minigrep)
[INFO] [stderr]    Compiling tracing v0.1.40
[INFO] [stderr]    Compiling idna v0.5.0
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling clap_builder v4.5.2
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling tokio v1.37.0
[INFO] [stderr]    Compiling object_oriented_demo v0.1.0 (/opt/rustwide/workdir/object_oriented_demo)
[INFO] [stderr]    Compiling struct_demo v0.1.0 (/opt/rustwide/workdir/struct_demo)
[INFO] [stderr]    Compiling control_flow_demo v0.1.0 (/opt/rustwide/workdir/control_flow_demo)
[INFO] [stderr]    Compiling ref_cell_demo v0.1.0 (/opt/rustwide/workdir/ref_cell_demo)
[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stdout] warning: method `area` is never used
[INFO] [stdout]  --> struct_demo/src/main.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | impl Rectangle {
[INFO] [stdout]   | -------------- method in this implementation
[INFO] [stdout] 8 |     fn area(self: &Self) -> i32 {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> ref_cell_demo/src/main.rs:18:27
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn new(messenger: &T, max: usize) -> LimitTracker<T> {
[INFO] [stdout]    |                           ^^                 ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn new(messenger: &T, max: usize) -> LimitTracker<'_, T> {
[INFO] [stdout]    |                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling http-body v1.0.0
[INFO] [stderr]    Compiling fabonacci v0.1.0 (/opt/rustwide/workdir/fabonacci)
[INFO] [stderr]    Compiling auto_test_demo v0.1.0 (/opt/rustwide/workdir/auto_test_demo)
[INFO] [stderr]    Compiling url v2.5.0
[INFO] [stderr]    Compiling hash_map_demo v0.1.0 (/opt/rustwide/workdir/hash_map_demo)
[INFO] [stderr]    Compiling rc_demo v0.1.0 (/opt/rustwide/workdir/rc_demo)
[INFO] [stderr]    Compiling http-body-util v0.1.1
[INFO] [stderr]    Compiling slice_demo v0.1.0 (/opt/rustwide/workdir/slice_demo)
[INFO] [stdout] warning: unused variable: `scores`
[INFO] [stdout]   --> hash_map_demo/src/main.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let scores: HashMap<_, _> = teams.iter().zip(initial_scores.iter()).collect();
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_scores`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> rc_demo/src/main.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let b = Cons(3, Rc::clone(&a));
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> rc_demo/src/main.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let c = Cons(4, Rc::clone(&a));
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling closure_demo v0.1.0 (/opt/rustwide/workdir/closure_demo)
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]  --> rc_demo/src/main.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 |     Cons(i32, Rc<List>),
[INFO] [stdout]   |     ---- ^^^  ^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     fields in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]   |
[INFO] [stdout] 2 -     Cons(i32, Rc<List>),
[INFO] [stdout] 2 +     Cons((), ()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> slice_demo/src/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut str = String::from("hello world");
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling error_handle_demo v0.1.0 (/opt/rustwide/workdir/error_handle_demo)
[INFO] [stderr]    Compiling rc_circle_demo v0.1.0 (/opt/rustwide/workdir/rc_circle_demo)
[INFO] [stderr]    Compiling transfer_temperature v0.1.0 (/opt/rustwide/workdir/transfer_temperature)
[INFO] [stdout] warning: unused variable: `f1`
[INFO] [stdout]  --> error_handle_demo/src/main.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let f1 = match f {
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_f1`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f2`
[INFO] [stdout]   --> error_handle_demo/src/main.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let f2 = File::open("hello.txt").unwrap_or_else(|error| {
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_f2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `value` and `children` are never read
[INFO] [stdout]  --> rc_circle_demo/src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Node {
[INFO] [stdout]   |        ---- fields in this struct
[INFO] [stdout] 8 |     value: i32,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 9 |     children: RefCell<Vec<Rc<Node>>>,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling drop_trait_demo v0.1.0 (/opt/rustwide/workdir/drop_trait_demo)
[INFO] [stderr] error: could not compile `http` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6/bin/rustc --crate-name http --edition=2018 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/http-1.1.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="std"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("default", "std"))' -C metadata=285df98e17ddf849 -C extra-filename=-2f6429de8c748e17 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bytes=/opt/rustwide/target/debug/deps/libbytes-9c2a396be262bdae.rmeta --extern fnv=/opt/rustwide/target/debug/deps/libfnv-2d77ec4f6f971b24.rmeta --extern itoa=/opt/rustwide/target/debug/deps/libitoa-4c6598116a867907.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> drop_trait_demo/src/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let c = CustomSmartPointer {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d`
[INFO] [stdout]   --> drop_trait_demo/src/main.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let d = CustomSmartPointer {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f0cab5e2801d4a720a8f647b288a2be58a59ceadda78197fa9a098b82afd752e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0cab5e2801d4a720a8f647b288a2be58a59ceadda78197fa9a098b82afd752e", kill_on_drop: false }`
[INFO] [stdout] f0cab5e2801d4a720a8f647b288a2be58a59ceadda78197fa9a098b82afd752e