[INFO] fetching crate zcash_client_backend 0.21.0...
[INFO] checking zcash_client_backend-0.21.0 against master#642c19bfc3a5c1de985bf5d0cc8207ac9d22708a for pr-148577
[INFO] extracting crate zcash_client_backend 0.21.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate zcash_client_backend 0.21.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate zcash_client_backend 0.21.0
[INFO] tweaked toml for crates.io crate zcash_client_backend 0.21.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate zcash_client_backend 0.21.0 on toolchain 642c19bfc3a5c1de985bf5d0cc8207ac9d22708a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate zcash_client_backend 0.21.0 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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
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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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 510c262ea632146e23f94f13b7488b24a4825f3b62f60c8775ea4cabb14669fd
[INFO] running `Command { std: "docker" "start" "-a" "510c262ea632146e23f94f13b7488b24a4825f3b62f60c8775ea4cabb14669fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "510c262ea632146e23f94f13b7488b24a4825f3b62f60c8775ea4cabb14669fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "510c262ea632146e23f94f13b7488b24a4825f3b62f60c8775ea4cabb14669fd", kill_on_drop: false }`
[INFO] [stdout] 510c262ea632146e23f94f13b7488b24a4825f3b62f60c8775ea4cabb14669fd
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b01a7a9d855b3461772401c946ef46be5c318db1a1a725e1e6a79fe489e4d2b4
[INFO] running `Command { std: "docker" "start" "-a" "b01a7a9d855b3461772401c946ef46be5c318db1a1a725e1e6a79fe489e4d2b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]    Compiling rustix v0.38.34
[INFO] [stderr]     Checking constant_time_eq v0.3.0
[INFO] [stderr]     Checking arrayref v0.3.7
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[INFO] [stderr]     Checking zcash_address v0.10.1
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[INFO] [stderr]     Checking shardtree v0.6.1
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[INFO] [stderr]     Checking chacha20poly1305 v0.10.1
[INFO] [stderr]    Compiling prost v0.14.1
[INFO] [stderr]     Checking zcash_note_encryption v0.4.1
[INFO] [stderr]     Checking zcash_script v0.4.2
[INFO] [stderr]    Compiling prost-types v0.14.1
[INFO] [stderr]     Checking gumdrop v0.8.1
[INFO] [stderr]     Checking zcash_transparent v0.6.1
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]    Compiling prost-build v0.14.1
[INFO] [stderr]     Checking reddsa v0.5.1
[INFO] [stderr]     Checking redjubjub v0.8.0
[INFO] [stderr]    Compiling tonic-prost-build v0.14.2
[INFO] [stderr]     Checking sapling-crypto v0.5.0
[INFO] [stderr]    Compiling zcash_client_backend v0.21.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking zcash_keys v0.12.0
[INFO] [stderr]     Checking halo2_gadgets v0.3.1
[INFO] [stderr]     Checking orchard v0.11.0
[INFO] [stderr]     Checking zcash_primitives v0.26.1
[INFO] [stderr]     Checking zcash_proofs v0.26.1
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 36.35s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: document-features v0.2.8
[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" "b01a7a9d855b3461772401c946ef46be5c318db1a1a725e1e6a79fe489e4d2b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b01a7a9d855b3461772401c946ef46be5c318db1a1a725e1e6a79fe489e4d2b4", kill_on_drop: false }`
[INFO] [stdout] b01a7a9d855b3461772401c946ef46be5c318db1a1a725e1e6a79fe489e4d2b4