[INFO] cloning repository https://github.com/vramana/merkle-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vramana/merkle-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvramana%2Fmerkle-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvramana%2Fmerkle-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b8a1cf42e1647437f447969e2ce79cd8b327fe2f
[INFO] testing vramana/merkle-rs against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvramana%2Fmerkle-rs" "/workspace/builds/worker-66/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-66/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vramana/merkle-rs on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vramana/merkle-rs
[INFO] finished tweaking git repo https://github.com/vramana/merkle-rs
[INFO] tweaked toml for git repo https://github.com/vramana/merkle-rs written to /workspace/builds/worker-66/source/Cargo.toml
[INFO] crate git repo https://github.com/vramana/merkle-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--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-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bb55326ee83352ae260a57f4456a6dbb47ed102ecccaf0cc1c7c39d40ec935eb
[INFO] running `Command { std: "docker" "start" "-a" "bb55326ee83352ae260a57f4456a6dbb47ed102ecccaf0cc1c7c39d40ec935eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb55326ee83352ae260a57f4456a6dbb47ed102ecccaf0cc1c7c39d40ec935eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb55326ee83352ae260a57f4456a6dbb47ed102ecccaf0cc1c7c39d40ec935eb", kill_on_drop: false }`
[INFO] [stdout] bb55326ee83352ae260a57f4456a6dbb47ed102ecccaf0cc1c7c39d40ec935eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b1c2eee8fefd13a94c4dc989f63500842bf5c7b293e6dff31ef2a8a2f9ca50fc
[INFO] running `Command { std: "docker" "start" "-a" "b1c2eee8fefd13a94c4dc989f63500842bf5c7b293e6dff31ef2a8a2f9ca50fc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling cpuid-bool v0.1.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling generic-array v0.14.2
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling sha2 v0.9.1
[INFO] [stderr]    Compiling merkle-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected one of `::`, `;`, or `as`, found keyword `use`
[INFO] [stdout]  --> src/main.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | use digest::Digest
[INFO] [stdout]   |                   - expected one of `::`, `;`, or `as`
[INFO] [stdout] 5 | use sha2::Sha256;
[INFO] [stdout]   | ^^^ unexpected token
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `merkle-rs` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "b1c2eee8fefd13a94c4dc989f63500842bf5c7b293e6dff31ef2a8a2f9ca50fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1c2eee8fefd13a94c4dc989f63500842bf5c7b293e6dff31ef2a8a2f9ca50fc", kill_on_drop: false }`
[INFO] [stdout] b1c2eee8fefd13a94c4dc989f63500842bf5c7b293e6dff31ef2a8a2f9ca50fc