[INFO] cloning repository https://github.com/luckychacha/my-rust-practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/luckychacha/my-rust-practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluckychacha%2Fmy-rust-practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluckychacha%2Fmy-rust-practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c556f6b68d5d089e3d2e45efda600a2f933e76a7
[INFO] checking luckychacha/my-rust-practice against try#93086cfebfccb79083c59d0d3b2052944bba643c for pr-146440-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluckychacha%2Fmy-rust-practice" "/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/luckychacha/my-rust-practice
[INFO] finished tweaking git repo https://github.com/luckychacha/my-rust-practice
[INFO] tweaked toml for git repo https://github.com/luckychacha/my-rust-practice written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/luckychacha/my-rust-practice on toolchain 93086cfebfccb79083c59d0d3b2052944bba643c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/luckychacha/my-rust-practice 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" "+93086cfebfccb79083c59d0d3b2052944bba643c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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_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" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 82f37050a6c86d72912eafc33a5ea5a7aca0b58fd30eb940d9f3ac8a68e69c2d
[INFO] running `Command { std: "docker" "start" "-a" "82f37050a6c86d72912eafc33a5ea5a7aca0b58fd30eb940d9f3ac8a68e69c2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "82f37050a6c86d72912eafc33a5ea5a7aca0b58fd30eb940d9f3ac8a68e69c2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82f37050a6c86d72912eafc33a5ea5a7aca0b58fd30eb940d9f3ac8a68e69c2d", kill_on_drop: false }`
[INFO] [stdout] 82f37050a6c86d72912eafc33a5ea5a7aca0b58fd30eb940d9f3ac8a68e69c2d
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f7c979c3cd06ed1fbf646704d4eccd77a460959bb4f8ea8cbe926db76a8a42d
[INFO] running `Command { std: "docker" "start" "-a" "6f7c979c3cd06ed1fbf646704d4eccd77a460959bb4f8ea8cbe926db76a8a42d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]     Checking zerocopy v0.7.32
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]     Checking allocator-api2 v0.2.16
[INFO] [stderr]     Checking bytes v1.5.0
[INFO] [stderr]    Compiling pkg-config v0.3.30
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]     Checking pure-rust-locales v0.8.1
[INFO] [stderr]     Checking iana-time-zone v0.1.60
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking arrow-schema v50.0.0
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling rustversion v1.0.14
[INFO] [stderr]     Checking subtle v2.5.0
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]    Compiling parking_lot_core v0.9.9
[INFO] [stderr]     Checking pin-project-lite v0.2.13
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]    Compiling semver v1.0.22
[INFO] [stderr]     Checking smallvec v1.13.1
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]     Checking strum v0.25.0
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking unicode-width v0.1.11
[INFO] [stderr]     Checking ryu v1.0.17
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]    Compiling crc32fast v1.4.0
[INFO] [stderr]    Compiling jobserver v0.1.28
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]    Compiling syn v2.0.55
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking socket2 v0.5.6
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling cc v1.0.90
[INFO] [stderr]    Compiling regex-automata v0.4.6
[INFO] [stderr]     Checking hashbrown v0.14.3
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling zstd-safe v7.1.0
[INFO] [stderr]    Compiling flatbuffers v23.5.26
[INFO] [stderr]     Checking unicode-normalization v0.1.23
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.5
[INFO] [stderr]     Checking half v2.4.0
[INFO] [stderr]    Compiling serde_json v1.0.115
[INFO] [stderr]     Checking cpufeatures v0.2.12
[INFO] [stderr]    Compiling async-trait v0.1.79
[INFO] [stderr]     Checking indexmap v2.2.6
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking num-iter v0.1.44
[INFO] [stderr]     Checking csv-core v0.1.11
[INFO] [stderr]    Compiling paste v1.0.14
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]     Checking brotli-decompressor v2.5.1
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking ordered-float v2.10.1
[INFO] [stderr]    Compiling rustix v0.38.32
[INFO] [stderr]    Compiling zstd-sys v2.0.10+zstd.1.5.6
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]     Checking itertools v0.12.1
[INFO] [stderr]     Checking linux-raw-sys v0.4.13
[INFO] [stderr]     Checking thrift v0.17.0
[INFO] [stderr]     Checking bitflags v2.5.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking fastrand v2.0.2
[INFO] [stderr]     Checking dashmap v5.5.3
[INFO] [stderr]     Checking brotli v3.5.0
[INFO] [stderr]    Compiling blake3 v1.5.1
[INFO] [stderr]     Checking anstream v0.6.13
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling lzma-sys v0.1.20
[INFO] [stderr]     Checking url v2.5.0
[INFO] [stderr]    Compiling bzip2-sys v0.1.11+1.0.8
[INFO] [stderr]     Checking constant_time_eq v0.3.0
[INFO] [stderr]     Checking arrayref v0.3.7
[INFO] [stderr]     Checking arrayvec v0.7.4
[INFO] [stderr]     Checking petgraph v0.6.4
[INFO] [stderr]     Checking blake2 v0.10.6
[INFO] [stderr]    Compiling regex v1.10.3
[INFO] [stderr]     Checking md-5 v0.10.6
[INFO] [stderr]     Checking uuid v1.8.0
[INFO] [stderr]     Checking unicode-segmentation v1.11.0
[INFO] [stderr]     Checking num v0.4.1
[INFO] [stderr]     Checking xz2 v0.1.7
[INFO] [stderr]     Checking arrow-buffer v50.0.0
[INFO] [stderr]     Checking winnow v0.6.5
[INFO] [stderr]    Compiling parse-zoneinfo v0.3.0
[INFO] [stderr]    Compiling anyhow v1.0.81
[INFO] [stderr]     Checking unsafe-libyaml v0.2.11
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking arrow-data v50.0.0
[INFO] [stderr]     Checking pbkdf2 v0.12.2
[INFO] [stderr]     Checking bzip2 v0.4.4
[INFO] [stderr]     Checking ripemd v0.1.3
[INFO] [stderr]     Checking hex-literal v0.4.1
[INFO] [stderr]    Compiling chrono-tz-build v0.2.1
[INFO] [stderr]     Checking chrono v0.4.37
[INFO] [stderr]     Checking env_filter v0.1.0
[INFO] [stderr]    Compiling snafu-derive v0.7.5
[INFO] [stderr]     Checking env_logger v0.11.3
[INFO] [stderr]    Compiling chrono-tz v0.8.6
[INFO] [stderr]     Checking merkle-tree v0.1.0 (/opt/rustwide/workdir/merkle-tree)
[INFO] [stderr]     Checking tempfile v3.10.1
[INFO] [stdout] error: struct `MerkleTree` is never constructed
[INFO] [stdout]   --> merkle-tree/src/lib.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct MerkleTree {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `MerkleTree` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_structs)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `merkle-tree` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "6f7c979c3cd06ed1fbf646704d4eccd77a460959bb4f8ea8cbe926db76a8a42d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f7c979c3cd06ed1fbf646704d4eccd77a460959bb4f8ea8cbe926db76a8a42d", kill_on_drop: false }`
[INFO] [stdout] 6f7c979c3cd06ed1fbf646704d4eccd77a460959bb4f8ea8cbe926db76a8a42d
