[INFO] cloning repository https://github.com/eldanniklk/substrate-kitties
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/eldanniklk/substrate-kitties" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feldanniklk%2Fsubstrate-kitties", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feldanniklk%2Fsubstrate-kitties'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 66b2154d5c83849e2c9a5fb5bb1362db418d197a
[INFO] checking eldanniklk/substrate-kitties against try#e117153a45c546e883c1f91d82611775fcaeffe0 for pr-146470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feldanniklk%2Fsubstrate-kitties" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/eldanniklk/substrate-kitties
[INFO] finished tweaking git repo https://github.com/eldanniklk/substrate-kitties
[INFO] tweaked toml for git repo https://github.com/eldanniklk/substrate-kitties written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/eldanniklk/substrate-kitties on toolchain e117153a45c546e883c1f91d82611775fcaeffe0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e117153a45c546e883c1f91d82611775fcaeffe0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/eldanniklk/substrate-kitties 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" "+e117153a45c546e883c1f91d82611775fcaeffe0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "6add104b321116bbe5839158d5b2d52c5d174aaea1cbe50cc2e783ee8b9e6bf6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6add104b321116bbe5839158d5b2d52c5d174aaea1cbe50cc2e783ee8b9e6bf6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6add104b321116bbe5839158d5b2d52c5d174aaea1cbe50cc2e783ee8b9e6bf6", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+e117153a45c546e883c1f91d82611775fcaeffe0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tests.rs:482:17
[INFO] [stdout]     |
[INFO] [stdout] 482 |             let mut accounts: Vec<u64> = (1u64..).take(accounts_count).collect();
[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] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tests.rs:476:9
[INFO] [stdout]     |
[INFO] [stdout] 476 | /         new_test_ext().execute_with(|| {
[INFO] [stdout] ...   |
[INFO] [stdout] 586 | |             Ok(())
[INFO] [stdout] 587 | |         });
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 476 |         let _ = new_test_ext().execute_with(|| {
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 14s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: trie-db v0.29.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 5`
[INFO] running `Command { std: "docker" "inspect" "a15a69c62b6feee2c9479942f9995f47155883d3b08b196a15bb07713a478332", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a15a69c62b6feee2c9479942f9995f47155883d3b08b196a15bb07713a478332", kill_on_drop: false }`
[INFO] [stdout] a15a69c62b6feee2c9479942f9995f47155883d3b08b196a15bb07713a478332