[INFO] cloning repository https://github.com/Biacco42/rusty_blockchain_study
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Biacco42/rusty_blockchain_study" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBiacco42%2Frusty_blockchain_study", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBiacco42%2Frusty_blockchain_study'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 06407706ba244043b8ec4030636504fd6894bbb1
[INFO] testing Biacco42/rusty_blockchain_study against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBiacco42%2Frusty_blockchain_study" "/workspace/builds/worker-60/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-60/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Biacco42/rusty_blockchain_study on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Biacco42/rusty_blockchain_study
[INFO] finished tweaking git repo https://github.com/Biacco42/rusty_blockchain_study
[INFO] tweaked toml for git repo https://github.com/Biacco42/rusty_blockchain_study written to /workspace/builds/worker-60/source/Cargo.toml
[INFO] crate git repo https://github.com/Biacco42/rusty_blockchain_study already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 53a466f974ccda63207c2dd330332f5ac86ed9853a0baa2b8259a6c617691311
[INFO] running `Command { std: "docker" "start" "-a" "53a466f974ccda63207c2dd330332f5ac86ed9853a0baa2b8259a6c617691311", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "53a466f974ccda63207c2dd330332f5ac86ed9853a0baa2b8259a6c617691311", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53a466f974ccda63207c2dd330332f5ac86ed9853a0baa2b8259a6c617691311", kill_on_drop: false }`
[INFO] [stdout] 53a466f974ccda63207c2dd330332f5ac86ed9853a0baa2b8259a6c617691311
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9190ace16b72e230e301e5cd6e611e48a1cb3d2646b908cdaf0aa1f9d1c07bdb
[INFO] running `Command { std: "docker" "start" "-a" "9190ace16b72e230e301e5cd6e611e48a1cb3d2646b908cdaf0aa1f9d1c07bdb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rusty_blockchain_study v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `hello`
[INFO] [stdout]  --> src/node/mod.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn hello() -> String {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.19s
[INFO] running `Command { std: "docker" "inspect" "9190ace16b72e230e301e5cd6e611e48a1cb3d2646b908cdaf0aa1f9d1c07bdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9190ace16b72e230e301e5cd6e611e48a1cb3d2646b908cdaf0aa1f9d1c07bdb", kill_on_drop: false }`
[INFO] [stdout] 9190ace16b72e230e301e5cd6e611e48a1cb3d2646b908cdaf0aa1f9d1c07bdb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85d3804087893396b3a0c0a38e042afe45d5df7aac8033204d038226148d07cc
[INFO] running `Command { std: "docker" "start" "-a" "85d3804087893396b3a0c0a38e042afe45d5df7aac8033204d038226148d07cc", kill_on_drop: false }`
[INFO] [stdout] warning: function is never used: `hello`
[INFO] [stdout]  --> src/node/mod.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn hello() -> String {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rusty_blockchain_study v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hello`
[INFO] [stdout]  --> src/node/mod.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn hello() -> String {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "85d3804087893396b3a0c0a38e042afe45d5df7aac8033204d038226148d07cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85d3804087893396b3a0c0a38e042afe45d5df7aac8033204d038226148d07cc", kill_on_drop: false }`
[INFO] [stdout] 85d3804087893396b3a0c0a38e042afe45d5df7aac8033204d038226148d07cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f99ce06069ceed494ca1d8dc234859e67c6d8dc70b829c250e6014eb723c2b9e
[INFO] running `Command { std: "docker" "start" "-a" "f99ce06069ceed494ca1d8dc234859e67c6d8dc70b829c250e6014eb723c2b9e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: function is never used: `hello`
[INFO] [stderr]  --> src/node/mod.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn hello() -> String {
[INFO] [stderr]   |    ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rusty_blockchain_study` (lib) generated 1 warning
[INFO] [stderr] warning: `rusty_blockchain_study` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.34s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rusty_blockchain_study-b0e3ed202db91197)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rusty_blockchain_study-8e609661c2ab7933)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rusty_blockchain_study
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f99ce06069ceed494ca1d8dc234859e67c6d8dc70b829c250e6014eb723c2b9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f99ce06069ceed494ca1d8dc234859e67c6d8dc70b829c250e6014eb723c2b9e", kill_on_drop: false }`
[INFO] [stdout] f99ce06069ceed494ca1d8dc234859e67c6d8dc70b829c250e6014eb723c2b9e