[INFO] cloning repository https://github.com/rust-chainblock/blockchain8
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rust-chainblock/blockchain8" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-chainblock%2Fblockchain8", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-chainblock%2Fblockchain8'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c6220be51fecf2d0ebebcd3b2ad2531847d0f9d6
[INFO] checking rust-chainblock/blockchain8 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-chainblock%2Fblockchain8" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rust-chainblock/blockchain8 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rust-chainblock/blockchain8
[INFO] finished tweaking git repo https://github.com/rust-chainblock/blockchain8
[INFO] tweaked toml for git repo https://github.com/rust-chainblock/blockchain8 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/rust-chainblock/blockchain8 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.122
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 025500a56e17749e7893b6b3c8e24c09df3938ce94297dcae89b0f1db9360715
[INFO] running `Command { std: "docker" "start" "-a" "025500a56e17749e7893b6b3c8e24c09df3938ce94297dcae89b0f1db9360715", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "025500a56e17749e7893b6b3c8e24c09df3938ce94297dcae89b0f1db9360715", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "025500a56e17749e7893b6b3c8e24c09df3938ce94297dcae89b0f1db9360715", kill_on_drop: false }`
[INFO] [stdout] 025500a56e17749e7893b6b3c8e24c09df3938ce94297dcae89b0f1db9360715
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4be5de840152be3ba813bfd4eecf927318e0906dd2c6e898429d4caee5830f27
[INFO] running `Command { std: "docker" "start" "-a" "4be5de840152be3ba813bfd4eecf927318e0906dd2c6e898429d4caee5830f27", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.122
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking blockchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `transaction_data` is never read
[INFO] [stdout]   --> src/block/../transaction.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Transaction {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] 10 |     pub transaction_data: TransactionData,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Transaction` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `transaction_data` is never read
[INFO] [stdout]   --> src/transaction.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Transaction {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] 10 |     pub transaction_data: TransactionData,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Transaction` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `transaction_data` is never read
[INFO] [stdout]   --> src/block/../transaction.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Transaction {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] 10 |     pub transaction_data: TransactionData,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Transaction` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `transaction_data` is never read
[INFO] [stdout]   --> src/transaction.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Transaction {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] 10 |     pub transaction_data: TransactionData,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Transaction` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.64s
[INFO] running `Command { std: "docker" "inspect" "4be5de840152be3ba813bfd4eecf927318e0906dd2c6e898429d4caee5830f27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4be5de840152be3ba813bfd4eecf927318e0906dd2c6e898429d4caee5830f27", kill_on_drop: false }`
[INFO] [stdout] 4be5de840152be3ba813bfd4eecf927318e0906dd2c6e898429d4caee5830f27