[INFO] cloning repository https://github.com/arniu/kepton
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/arniu/kepton" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farniu%2Fkepton", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farniu%2Fkepton'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 48fedba5b002f3920422b94f8cb9b5d64bec0c10
[INFO] checking arniu/kepton against master#9fa580b1175018b0a276b0bc68f9827a106f7260 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farniu%2Fkepton" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/arniu/kepton on toolchain 9fa580b1175018b0a276b0bc68f9827a106f7260
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/arniu/kepton
[INFO] finished tweaking git repo https://github.com/arniu/kepton
[INFO] tweaked toml for git repo https://github.com/arniu/kepton written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/arniu/kepton already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 08fc0f67ca64e53e496ac3510f89dd3f7577d4029728d0472008181ed2bfeb91
[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" "08fc0f67ca64e53e496ac3510f89dd3f7577d4029728d0472008181ed2bfeb91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "08fc0f67ca64e53e496ac3510f89dd3f7577d4029728d0472008181ed2bfeb91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08fc0f67ca64e53e496ac3510f89dd3f7577d4029728d0472008181ed2bfeb91", kill_on_drop: false }`
[INFO] [stdout] 08fc0f67ca64e53e496ac3510f89dd3f7577d4029728d0472008181ed2bfeb91
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fc99df957bdbac3cafc9a6a60180afe7cad9e7caea56f51b919653ca9c14c477
[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" "fc99df957bdbac3cafc9a6a60180afe7cad9e7caea56f51b919653ca9c14c477", kill_on_drop: false }`
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[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]  --> src/middleware/internal/insert_set.rs:6:3
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[serde(untagged)]
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout] 7 | #[derive(Deserialize, Serialize, Clone, Debug, Eq, PartialEq)]
[INFO] [stdout]   |          ----------- the attribute is introduced here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(legacy_derive_helpers)]` on by default
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]   = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]  --> src/middleware/internal/insert_set.rs:6:3
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[serde(untagged)]
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout] 7 | #[derive(Deserialize, Serialize, Clone, Debug, Eq, PartialEq)]
[INFO] [stdout]   |          ----------- the attribute is introduced here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(legacy_derive_helpers)]` on by default
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]   = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4m 46s
[INFO] running `Command { std: "docker" "inspect" "fc99df957bdbac3cafc9a6a60180afe7cad9e7caea56f51b919653ca9c14c477", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc99df957bdbac3cafc9a6a60180afe7cad9e7caea56f51b919653ca9c14c477", kill_on_drop: false }`
[INFO] [stdout] fc99df957bdbac3cafc9a6a60180afe7cad9e7caea56f51b919653ca9c14c477