[INFO] cloning repository https://github.com/Masupell/blockchain_test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Masupell/blockchain_test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMasupell%2Fblockchain_test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMasupell%2Fblockchain_test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 52653ff7a61dbc727f6999455c02d5b65d3aa325
[INFO] checking Masupell/blockchain_test against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMasupell%2Fblockchain_test" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Masupell/blockchain_test on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Masupell/blockchain_test
[INFO] finished tweaking git repo https://github.com/Masupell/blockchain_test
[INFO] tweaked toml for git repo https://github.com/Masupell/blockchain_test written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Masupell/blockchain_test 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sha256 v1.1.1
[INFO] [stderr]   Downloaded sha2 v0.10.6
[INFO] [stderr]   Downloaded base64ct v1.5.3
[INFO] [stderr]   Downloaded signature v2.0.0
[INFO] [stderr]   Downloaded ecdsa v0.15.1
[INFO] [stderr]   Downloaded cxxbridge-flags v1.0.87
[INFO] [stderr]   Downloaded cxxbridge-macro v1.0.87
[INFO] [stderr]   Downloaded proc-macro2 v1.0.50
[INFO] [stderr]   Downloaded cxx-build v1.0.87
[INFO] [stderr]   Downloaded k256 v0.12.0
[INFO] [stderr]   Downloaded const-oid v0.9.1
[INFO] [stderr]   Downloaded cxx v1.0.87
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8d7683b8d3849af8f7a53fe2f79670f93e6c73cd3ff5f000fef51a1ea77e3d08
[INFO] running `Command { std: "docker" "start" "-a" "8d7683b8d3849af8f7a53fe2f79670f93e6c73cd3ff5f000fef51a1ea77e3d08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d7683b8d3849af8f7a53fe2f79670f93e6c73cd3ff5f000fef51a1ea77e3d08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d7683b8d3849af8f7a53fe2f79670f93e6c73cd3ff5f000fef51a1ea77e3d08", kill_on_drop: false }`
[INFO] [stdout] 8d7683b8d3849af8f7a53fe2f79670f93e6c73cd3ff5f000fef51a1ea77e3d08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 23499456d52d54f64e92183c24bbc75354150ef37853368857405eca8011bd92
[INFO] running `Command { std: "docker" "start" "-a" "23499456d52d54f64e92183c24bbc75354150ef37853368857405eca8011bd92", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]     Checking zeroize v1.5.7
[INFO] [stderr]     Checking const-oid v0.9.1
[INFO] [stderr]     Checking base64ct v1.5.3
[INFO] [stderr]     Checking base16ct v0.1.1
[INFO] [stderr]     Checking cpufeatures v0.2.5
[INFO] [stderr]     Checking iana-time-zone v0.1.53
[INFO] [stderr]     Checking once_cell v1.17.0
[INFO] [stderr]     Checking der v0.6.1
[INFO] [stderr]     Checking spki v0.6.0
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]     Checking pkcs8 v0.9.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking chrono v0.4.23
[INFO] [stderr]     Checking ff v0.12.1
[INFO] [stderr]     Checking group v0.12.1
[INFO] [stderr]     Checking block-buffer v0.10.3
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking crypto-bigint v0.4.9
[INFO] [stderr]     Checking sec1 v0.3.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking sha2 v0.9.9
[INFO] [stderr]     Checking digest v0.10.6
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking signature v2.0.0
[INFO] [stderr]     Checking sha2 v0.10.6
[INFO] [stderr]     Checking sha256 v1.1.1
[INFO] [stderr]     Checking rfc6979 v0.3.1
[INFO] [stderr]     Checking elliptic-curve v0.12.3
[INFO] [stderr]     Checking ecdsa v0.15.1
[INFO] [stderr]     Checking k256 v0.12.0
[INFO] [stderr]     Checking blockchain_test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Transaction`
[INFO] [stdout]  --> src/main.rs:4:37
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::blockchain::{BlockChain, Transaction};
[INFO] [stdout]   |                                     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Transaction`
[INFO] [stdout]  --> src/main.rs:4:37
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::blockchain::{BlockChain, Transaction};
[INFO] [stdout]   |                                     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.37s
[INFO] running `Command { std: "docker" "inspect" "23499456d52d54f64e92183c24bbc75354150ef37853368857405eca8011bd92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23499456d52d54f64e92183c24bbc75354150ef37853368857405eca8011bd92", kill_on_drop: false }`
[INFO] [stdout] 23499456d52d54f64e92183c24bbc75354150ef37853368857405eca8011bd92
[INFO] checking Masupell/blockchain_test against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMasupell%2Fblockchain_test" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Masupell/blockchain_test on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Masupell/blockchain_test
[INFO] finished tweaking git repo https://github.com/Masupell/blockchain_test
[INFO] tweaked toml for git repo https://github.com/Masupell/blockchain_test written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Masupell/blockchain_test 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 089454fed75e1fcd544713f957b5e4e93921702c2031983df6a323a440e2b9e6
[INFO] running `Command { std: "docker" "start" "-a" "089454fed75e1fcd544713f957b5e4e93921702c2031983df6a323a440e2b9e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "089454fed75e1fcd544713f957b5e4e93921702c2031983df6a323a440e2b9e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "089454fed75e1fcd544713f957b5e4e93921702c2031983df6a323a440e2b9e6", kill_on_drop: false }`
[INFO] [stdout] 089454fed75e1fcd544713f957b5e4e93921702c2031983df6a323a440e2b9e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7ac25446f61d5bcc5debb7cbf254cc3e4760ddfc0b630d6442ea55d84d6fdd21
[INFO] running `Command { std: "docker" "start" "-a" "7ac25446f61d5bcc5debb7cbf254cc3e4760ddfc0b630d6442ea55d84d6fdd21", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]     Checking zeroize v1.5.7
[INFO] [stderr]     Checking const-oid v0.9.1
[INFO] [stderr]     Checking base64ct v1.5.3
[INFO] [stderr]     Checking base16ct v0.1.1
[INFO] [stderr]     Checking cpufeatures v0.2.5
[INFO] [stderr]     Checking iana-time-zone v0.1.53
[INFO] [stderr]     Checking once_cell v1.17.0
[INFO] [stderr]     Checking der v0.6.1
[INFO] [stderr]     Checking spki v0.6.0
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]     Checking pkcs8 v0.9.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking chrono v0.4.23
[INFO] [stderr]     Checking ff v0.12.1
[INFO] [stderr]     Checking group v0.12.1
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.3
[INFO] [stderr]     Checking crypto-bigint v0.4.9
[INFO] [stderr]     Checking sec1 v0.3.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking sha2 v0.9.9
[INFO] [stderr]     Checking digest v0.10.6
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking signature v2.0.0
[INFO] [stderr]     Checking sha2 v0.10.6
[INFO] [stderr]     Checking sha256 v1.1.1
[INFO] [stderr]     Checking elliptic-curve v0.12.3
[INFO] [stderr]     Checking rfc6979 v0.3.1
[INFO] [stderr]     Checking ecdsa v0.15.1
[INFO] [stderr]     Checking k256 v0.12.0
[INFO] [stderr]     Checking blockchain_test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Transaction`
[INFO] [stdout]  --> src/main.rs:4:37
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::blockchain::{BlockChain, Transaction};
[INFO] [stdout]   |                                     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Transaction`
[INFO] [stdout]  --> src/main.rs:4:37
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::blockchain::{BlockChain, Transaction};
[INFO] [stdout]   |                                     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.83s
[INFO] running `Command { std: "docker" "inspect" "7ac25446f61d5bcc5debb7cbf254cc3e4760ddfc0b630d6442ea55d84d6fdd21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ac25446f61d5bcc5debb7cbf254cc3e4760ddfc0b630d6442ea55d84d6fdd21", kill_on_drop: false }`
[INFO] [stdout] 7ac25446f61d5bcc5debb7cbf254cc3e4760ddfc0b630d6442ea55d84d6fdd21