[INFO] cloning repository https://github.com/PaperAnalyticalDeviceND/PADChain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/PaperAnalyticalDeviceND/PADChain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPaperAnalyticalDeviceND%2FPADChain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPaperAnalyticalDeviceND%2FPADChain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c25880c23f6edb30228d716eaaedd83d78c88753
[INFO] checking PaperAnalyticalDeviceND/PADChain against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPaperAnalyticalDeviceND%2FPADChain" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/PaperAnalyticalDeviceND/PADChain on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/PaperAnalyticalDeviceND/PADChain
[INFO] finished tweaking git repo https://github.com/PaperAnalyticalDeviceND/PADChain
[INFO] tweaked toml for git repo https://github.com/PaperAnalyticalDeviceND/PADChain written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/PaperAnalyticalDeviceND/PADChain already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e795576dc8997c940c137e4177a8b9acca2356203e714ec9016d169a503f3570
[INFO] running `Command { std: "docker" "start" "-a" "e795576dc8997c940c137e4177a8b9acca2356203e714ec9016d169a503f3570", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e795576dc8997c940c137e4177a8b9acca2356203e714ec9016d169a503f3570", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e795576dc8997c940c137e4177a8b9acca2356203e714ec9016d169a503f3570", kill_on_drop: false }`
[INFO] [stdout] e795576dc8997c940c137e4177a8b9acca2356203e714ec9016d169a503f3570
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c55b49688088cee046903b4457dbb7b1f0e0a05aaed7b89651e67e6ade4d263
[INFO] running `Command { std: "docker" "start" "-a" "0c55b49688088cee046903b4457dbb7b1f0e0a05aaed7b89651e67e6ade4d263", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.47
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling serde v1.0.85
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]     Checking arrayref v0.3.5
[INFO] [stderr]     Checking byte-tools v0.2.0
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]     Checking block-buffer v0.3.3
[INFO] [stderr]    Compiling proc-macro2 v0.4.26
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.2
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rand_os v0.1.2
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]     Checking generic-array v0.9.0
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking digest v0.7.6
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking sha2 v0.7.1
[INFO] [stderr]    Compiling serde_derive v1.0.85
[INFO] [stderr]     Checking serde_json v1.0.36
[INFO] [stderr]     Checking padchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:77:32
[INFO] [stdout]    |
[INFO] [stdout] 77 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:77:32
[INFO] [stdout]    |
[INFO] [stdout] 77 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:174:9
[INFO] [stdout]     |
[INFO] [stdout] 174 |         chain.lock().unwrap().suggest_block(String::from("Wallet A"), String::from("000000000000"));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:175:9
[INFO] [stdout]     |
[INFO] [stdout] 175 |         chain.lock().unwrap().suggest_block(String::from("Wallet B"), String::from("000000000001"));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:174:9
[INFO] [stdout]     |
[INFO] [stdout] 174 |         chain.lock().unwrap().suggest_block(String::from("Wallet A"), String::from("000000000000"));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:175:9
[INFO] [stdout]     |
[INFO] [stdout] 175 |         chain.lock().unwrap().suggest_block(String::from("Wallet B"), String::from("000000000001"));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.43s
[INFO] running `Command { std: "docker" "inspect" "0c55b49688088cee046903b4457dbb7b1f0e0a05aaed7b89651e67e6ade4d263", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c55b49688088cee046903b4457dbb7b1f0e0a05aaed7b89651e67e6ade4d263", kill_on_drop: false }`
[INFO] [stdout] 0c55b49688088cee046903b4457dbb7b1f0e0a05aaed7b89651e67e6ade4d263