[INFO] fetching crate light_merkle 0.1.0...
[INFO] checking light_merkle-0.1.0 against master#a3f76a26e045a760bb1163b7eab36872985242d5 for pr-130930
[INFO] extracting crate light_merkle 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate light_merkle 0.1.0 on toolchain a3f76a26e045a760bb1163b7eab36872985242d5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate light_merkle 0.1.0
[INFO] finished tweaking crates.io crate light_merkle 0.1.0
[INFO] tweaked toml for crates.io crate light_merkle 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 22 packages to latest compatible versions
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v1.1.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6929f82160be279cb7457a1317332ad97f6808a05d61ba466ca72d61b56abfe9
[INFO] running `Command { std: "docker" "start" "-a" "6929f82160be279cb7457a1317332ad97f6808a05d61ba466ca72d61b56abfe9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6929f82160be279cb7457a1317332ad97f6808a05d61ba466ca72d61b56abfe9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6929f82160be279cb7457a1317332ad97f6808a05d61ba466ca72d61b56abfe9", kill_on_drop: false }`
[INFO] [stdout] 6929f82160be279cb7457a1317332ad97f6808a05d61ba466ca72d61b56abfe9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0aada06ecb5197c71def3612d6e7bfa271a1d5a7a868df0c262c99a86d62c53a
[INFO] running `Command { std: "docker" "start" "-a" "0aada06ecb5197c71def3612d6e7bfa271a1d5a7a868df0c262c99a86d62c53a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]     Checking keccak v0.1.5
[INFO] [stderr]     Checking sha3 v0.10.8
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.79
[INFO] [stderr]    Compiling serde_derive v1.0.210
[INFO] [stderr]     Checking light_merkle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `sha2::Digest`
[INFO] [stdout]  --> src/light_merkle.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use sha2::Digest;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `hash` is never read
[INFO] [stdout]    --> src/light_merkle.rs:218:25
[INFO] [stdout]     |
[INFO] [stdout] 218 |                         hash = &(String::from("0x") + hash_.as_str());
[INFO] [stdout]     |                         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `hash` is never read
[INFO] [stdout]    --> src/light_merkle.rs:218:25
[INFO] [stdout]     |
[INFO] [stdout] 218 |                         hash = &(String::from("0x") + hash_.as_str());
[INFO] [stdout]     |                         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.95s
[INFO] running `Command { std: "docker" "inspect" "0aada06ecb5197c71def3612d6e7bfa271a1d5a7a868df0c262c99a86d62c53a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0aada06ecb5197c71def3612d6e7bfa271a1d5a7a868df0c262c99a86d62c53a", kill_on_drop: false }`
[INFO] [stdout] 0aada06ecb5197c71def3612d6e7bfa271a1d5a7a868df0c262c99a86d62c53a