[INFO] fetching crate conserve 24.8.0...
[INFO] checking conserve-24.8.0 against master#2b112efcccf831c0e0fbaa6470047c7067f12801 for pr-150727-1
[INFO] extracting crate conserve 24.8.0 into /workspace/builds/worker-3-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-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate conserve 24.8.0 on toolchain 2b112efcccf831c0e0fbaa6470047c7067f12801
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2b112efcccf831c0e0fbaa6470047c7067f12801" "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" "+2b112efcccf831c0e0fbaa6470047c7067f12801" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+2b112efcccf831c0e0fbaa6470047c7067f12801" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 09c36381afa29fa8f2f249b18a4b7cfeae998b2b57d2874d419b2bcd91f3d679
[INFO] running `Command { std: "docker" "start" "-a" "09c36381afa29fa8f2f249b18a4b7cfeae998b2b57d2874d419b2bcd91f3d679", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "09c36381afa29fa8f2f249b18a4b7cfeae998b2b57d2874d419b2bcd91f3d679", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09c36381afa29fa8f2f249b18a4b7cfeae998b2b57d2874d419b2bcd91f3d679", kill_on_drop: false }`
[INFO] [stdout] 09c36381afa29fa8f2f249b18a4b7cfeae998b2b57d2874d419b2bcd91f3d679
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+2b112efcccf831c0e0fbaa6470047c7067f12801" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f5ddf561824a92712b5257290ec6f9cc8b7ad505364833a6d1898c7f0c7cbbe
[INFO] running `Command { std: "docker" "start" "-a" "6f5ddf561824a92712b5257290ec6f9cc8b7ad505364833a6d1898c7f0c7cbbe", kill_on_drop: false }`
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[INFO] [stderr]     Checking tracing-subscriber v0.3.18
[INFO] [stderr]     Checking aws-smithy-runtime-api v1.4.0
[INFO] [stderr]     Checking aws-smithy-eventstream v0.60.4
[INFO] [stderr]     Checking aws-smithy-json v0.60.7
[INFO] [stderr]     Checking aws-smithy-query v0.60.7
[INFO] [stderr]     Checking aws-smithy-http v0.60.7
[INFO] [stderr]     Checking aws-credential-types v1.2.0
[INFO] [stderr]     Checking tracing-appender v0.2.3
[INFO] [stderr]     Checking tracing-test v0.2.4
[INFO] [stderr]     Checking aws-sigv4 v1.2.0
[INFO] [stderr]     Checking aws-smithy-checksums v0.60.7
[INFO] [stderr]     Checking aws-runtime v1.2.0
[INFO] [stderr]     Checking hyper-rustls v0.24.2
[INFO] [stderr]     Checking aws-smithy-runtime v1.3.0
[INFO] [stderr]     Checking aws-sdk-sts v1.20.0
[INFO] [stderr]     Checking aws-sdk-ssooidc v1.20.0
[INFO] [stderr]     Checking aws-sdk-sso v1.20.0
[INFO] [stderr]     Checking aws-sdk-s3 v1.23.0
[INFO] [stderr]     Checking aws-config v1.2.0
[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 42s
[INFO] running `Command { std: "docker" "inspect" "6f5ddf561824a92712b5257290ec6f9cc8b7ad505364833a6d1898c7f0c7cbbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f5ddf561824a92712b5257290ec6f9cc8b7ad505364833a6d1898c7f0c7cbbe", kill_on_drop: false }`
[INFO] [stdout] 6f5ddf561824a92712b5257290ec6f9cc8b7ad505364833a6d1898c7f0c7cbbe