[INFO] fetching crate conserve 24.8.0...
[INFO] checking conserve-24.8.0 against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] extracting crate conserve 24.8.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate conserve 24.8.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate conserve 24.8.0
[INFO] tweaked toml for crates.io crate conserve 24.8.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate conserve 24.8.0 on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate conserve 24.8.0 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 391a579a4b115764b32077780205d2838542e7160c3a0766fc81bd1116a99324
[INFO] running `Command { std: "docker" "start" "-a" "391a579a4b115764b32077780205d2838542e7160c3a0766fc81bd1116a99324", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "391a579a4b115764b32077780205d2838542e7160c3a0766fc81bd1116a99324", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "391a579a4b115764b32077780205d2838542e7160c3a0766fc81bd1116a99324", kill_on_drop: false }`
[INFO] [stdout] 391a579a4b115764b32077780205d2838542e7160c3a0766fc81bd1116a99324
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d1dd4f0735a016438a61a77c1bfba4b6587e1ed6f5ef6de4000a04d08ec47ee9
[INFO] running `Command { std: "docker" "start" "-a" "d1dd4f0735a016438a61a77c1bfba4b6587e1ed6f5ef6de4000a04d08ec47ee9", kill_on_drop: false }`
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[INFO] [stderr]     Checking conserve v24.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `source` is never read
[INFO] [stdout]   --> src/jsonio.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |         source: io::Error,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `source` is never read
[INFO] [stdout]   --> src/jsonio.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         source: serde_json::Error,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `path` is never read
[INFO] [stdout]   --> src/jsonio.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         path: PathBuf,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `source` is never read
[INFO] [stdout]   --> src/jsonio.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |         source: transport::Error,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `source` is never read
[INFO] [stdout]   --> src/jsonio.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |         source: io::Error,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `source` is never read
[INFO] [stdout]   --> src/jsonio.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         source: serde_json::Error,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `path` is never read
[INFO] [stdout]   --> src/jsonio.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         path: PathBuf,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `source` is never read
[INFO] [stdout]   --> src/jsonio.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |         source: transport::Error,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item
[INFO] [stdout]   --> tests/proptest_changes.rs:37:24
[INFO] [stdout]    |
[INFO] [stdout] 37 | #[derive(Debug, Clone, Arbitrary)]
[INFO] [stdout]    |                        ^--------
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        `Arbitrary` is not local
[INFO] [stdout]    |                        move the `impl` block outside of this constant `_IMPL_ARBITRARY_FOR_TreeChange`
[INFO] [stdout] 38 | enum TreeChange {
[INFO] [stdout]    |      ---------- `TreeChange` is not local
[INFO] [stdout]    |
[INFO] [stdout]    = note: the derive macro `Arbitrary` defines the non-local `impl`, and may need to be changed
[INFO] [stdout]    = note: the derive macro `Arbitrary` may come from an old version of the `proptest_derive` crate, try updating your dependency with `cargo update -p proptest_derive`
[INFO] [stdout]    = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl`
[INFO] [stdout]    = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint
[INFO] [stdout]    = note: `#[warn(non_local_definitions)]` on by default
[INFO] [stdout]    = note: this warning originates in the derive macro `Arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 19s
[INFO] running `Command { std: "docker" "inspect" "d1dd4f0735a016438a61a77c1bfba4b6587e1ed6f5ef6de4000a04d08ec47ee9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1dd4f0735a016438a61a77c1bfba4b6587e1ed6f5ef6de4000a04d08ec47ee9", kill_on_drop: false }`
[INFO] [stdout] d1dd4f0735a016438a61a77c1bfba4b6587e1ed6f5ef6de4000a04d08ec47ee9