[INFO] fetching crate tiny-merkle 0.3.0...
[INFO] testing tiny-merkle-0.3.0 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-1
[INFO] extracting crate tiny-merkle 0.3.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate tiny-merkle 0.3.0
[INFO] finished tweaking crates.io crate tiny-merkle 0.3.0
[INFO] tweaked toml for crates.io crate tiny-merkle 0.3.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tiny-merkle 0.3.0 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate tiny-merkle 0.3.0 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" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2af775dc70a68b325be0a7c673435de1c7562df3c4d30c0aae7a73b7769085d4
[INFO] running `Command { std: "docker" "start" "-a" "2af775dc70a68b325be0a7c673435de1c7562df3c4d30c0aae7a73b7769085d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2af775dc70a68b325be0a7c673435de1c7562df3c4d30c0aae7a73b7769085d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2af775dc70a68b325be0a7c673435de1c7562df3c4d30c0aae7a73b7769085d4", kill_on_drop: false }`
[INFO] [stdout] 2af775dc70a68b325be0a7c673435de1c7562df3c4d30c0aae7a73b7769085d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] abd900dbcc4a5e7e4c5011fa7f7f1e957057b51a65dfbe18d7e9a3ee084bb53b
[INFO] running `Command { std: "docker" "start" "-a" "abd900dbcc4a5e7e4c5011fa7f7f1e957057b51a65dfbe18d7e9a3ee084bb53b", kill_on_drop: false }`
[INFO] [stderr]    Compiling tiny-merkle v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this arithmetic operation will overflow
[INFO] [stdout]    --> src/merkle.rs:164:4
[INFO] [stdout]     |
[INFO] [stdout] 164 |             1 << MAX_TREE_DEPTH
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^ attempt to shift left by `32_usize`, which would overflow
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(arithmetic_overflow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tiny-merkle` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "abd900dbcc4a5e7e4c5011fa7f7f1e957057b51a65dfbe18d7e9a3ee084bb53b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abd900dbcc4a5e7e4c5011fa7f7f1e957057b51a65dfbe18d7e9a3ee084bb53b", kill_on_drop: false }`
[INFO] [stdout] abd900dbcc4a5e7e4c5011fa7f7f1e957057b51a65dfbe18d7e9a3ee084bb53b