[INFO] cloning repository https://github.com/jk-gan/blockchain-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jk-gan/blockchain-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjk-gan%2Fblockchain-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjk-gan%2Fblockchain-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9ae8ac66358ffabd7bfc2a42fab1b966b4a61131
[INFO] testing jk-gan/blockchain-rust against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjk-gan%2Fblockchain-rust" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jk-gan/blockchain-rust on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jk-gan/blockchain-rust
[INFO] finished tweaking git repo https://github.com/jk-gan/blockchain-rust
[INFO] tweaked toml for git repo https://github.com/jk-gan/blockchain-rust written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/jk-gan/blockchain-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3adfeb10de2718f9228c9a2e293107f88e2cb3e45901c220d054a8cfdc1e019e
[INFO] running `Command { std: "docker" "start" "-a" "3adfeb10de2718f9228c9a2e293107f88e2cb3e45901c220d054a8cfdc1e019e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3adfeb10de2718f9228c9a2e293107f88e2cb3e45901c220d054a8cfdc1e019e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3adfeb10de2718f9228c9a2e293107f88e2cb3e45901c220d054a8cfdc1e019e", kill_on_drop: false }`
[INFO] [stdout] 3adfeb10de2718f9228c9a2e293107f88e2cb3e45901c220d054a8cfdc1e019e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7695feea1a4cd663f85a768f1b54656d16cd457a371595ea7f9df4c205f56bbe
[INFO] running `Command { std: "docker" "start" "-a" "7695feea1a4cd663f85a768f1b54656d16cd457a371595ea7f9df4c205f56bbe", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling num-bigint v0.2.1
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling ring v0.13.5
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling blockchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant is never used: `TARGER_BIT`
[INFO] [stdout]  --> src/proof_of_work.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | const TARGER_BIT: usize = 24;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `ProofOfWork`
[INFO] [stdout]  --> src/proof_of_work.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct ProofOfWork {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/proof_of_work.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn new(block: Block) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.86s
[INFO] running `Command { std: "docker" "inspect" "7695feea1a4cd663f85a768f1b54656d16cd457a371595ea7f9df4c205f56bbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7695feea1a4cd663f85a768f1b54656d16cd457a371595ea7f9df4c205f56bbe", kill_on_drop: false }`
[INFO] [stdout] 7695feea1a4cd663f85a768f1b54656d16cd457a371595ea7f9df4c205f56bbe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 73c156b3ff58dad2423af3fb70966d71a7f3699bd2152946769ad0f0c7af7d0a
[INFO] running `Command { std: "docker" "start" "-a" "73c156b3ff58dad2423af3fb70966d71a7f3699bd2152946769ad0f0c7af7d0a", kill_on_drop: false }`
[INFO] [stderr]    Compiling blockchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant is never used: `TARGER_BIT`
[INFO] [stdout]  --> src/proof_of_work.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | const TARGER_BIT: usize = 24;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `ProofOfWork`
[INFO] [stdout]  --> src/proof_of_work.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct ProofOfWork {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/proof_of_work.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn new(block: Block) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `Command { std: "docker" "inspect" "73c156b3ff58dad2423af3fb70966d71a7f3699bd2152946769ad0f0c7af7d0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73c156b3ff58dad2423af3fb70966d71a7f3699bd2152946769ad0f0c7af7d0a", kill_on_drop: false }`
[INFO] [stdout] 73c156b3ff58dad2423af3fb70966d71a7f3699bd2152946769ad0f0c7af7d0a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e73cfd5f99181733bd65abdc31b0f733bde8ad7e59d6b5a1293c729d15770d9d
[INFO] running `Command { std: "docker" "start" "-a" "e73cfd5f99181733bd65abdc31b0f733bde8ad7e59d6b5a1293c729d15770d9d", kill_on_drop: false }`
[INFO] [stderr] warning: constant is never used: `TARGER_BIT`
[INFO] [stderr]  --> src/proof_of_work.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | const TARGER_BIT: usize = 24;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ProofOfWork`
[INFO] [stderr]  --> src/proof_of_work.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | struct ProofOfWork {
[INFO] [stderr]   |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/proof_of_work.rs:13:8
[INFO] [stderr]    |
[INFO] [stderr] 13 |     fn new(block: Block) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/blockchain-6acf77715a50b51a)
[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" "e73cfd5f99181733bd65abdc31b0f733bde8ad7e59d6b5a1293c729d15770d9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e73cfd5f99181733bd65abdc31b0f733bde8ad7e59d6b5a1293c729d15770d9d", kill_on_drop: false }`
[INFO] [stdout] e73cfd5f99181733bd65abdc31b0f733bde8ad7e59d6b5a1293c729d15770d9d