[INFO] cloning repository https://github.com/slogemann1/word-search
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/slogemann1/word-search" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fslogemann1%2Fword-search", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fslogemann1%2Fword-search'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 934fbabaa6728ba2e987386a754c755ab3cb3c58
[INFO] checking slogemann1/word-search against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fslogemann1%2Fword-search" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/slogemann1/word-search on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/slogemann1/word-search
[INFO] finished tweaking git repo https://github.com/slogemann1/word-search
[INFO] tweaked toml for git repo https://github.com/slogemann1/word-search written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/slogemann1/word-search already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c1813f884e7a8189b296cf358d4041b978dd8d5c8a8ac3a5c1262c707bb93e9e
[INFO] running `Command { std: "docker" "start" "-a" "c1813f884e7a8189b296cf358d4041b978dd8d5c8a8ac3a5c1262c707bb93e9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c1813f884e7a8189b296cf358d4041b978dd8d5c8a8ac3a5c1262c707bb93e9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1813f884e7a8189b296cf358d4041b978dd8d5c8a8ac3a5c1262c707bb93e9e", kill_on_drop: false }`
[INFO] [stdout] c1813f884e7a8189b296cf358d4041b978dd8d5c8a8ac3a5c1262c707bb93e9e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fb810d4337a6760dc3965c15e963a385ebb41b39244fd97cad6560e28d1ed0a7
[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" "fb810d4337a6760dc3965c15e963a385ebb41b39244fd97cad6560e28d1ed0a7", kill_on_drop: false }`
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[INFO] [stderr]     Checking wordsearch v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]  --> src/config.rs:6:3
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[serde(rename_all = "camelCase")]
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout] 7 | #[derive(Serialize, Deserialize, Clone)]
[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/config.rs:6:3
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[serde(rename_all = "camelCase")]
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout] 7 | #[derive(Serialize, Deserialize, Clone)]
[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 3m 48s
[INFO] running `Command { std: "docker" "inspect" "fb810d4337a6760dc3965c15e963a385ebb41b39244fd97cad6560e28d1ed0a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb810d4337a6760dc3965c15e963a385ebb41b39244fd97cad6560e28d1ed0a7", kill_on_drop: false }`
[INFO] [stdout] fb810d4337a6760dc3965c15e963a385ebb41b39244fd97cad6560e28d1ed0a7