[INFO] cloning repository https://github.com/yeyiban/learn_chain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yeyiban/learn_chain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyeyiban%2Flearn_chain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyeyiban%2Flearn_chain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1cc8f0600e08453424a0ecc93c8b0f27cdcf1e32
[INFO] testing yeyiban/learn_chain against try#db823df02fd0c2cf67b43025ac3fef3f2d743245 for pr-150681
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyeyiban%2Flearn_chain" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/yeyiban/learn_chain
[INFO] finished tweaking git repo https://github.com/yeyiban/learn_chain
[INFO] tweaked toml for git repo https://github.com/yeyiban/learn_chain written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/yeyiban/learn_chain on toolchain db823df02fd0c2cf67b43025ac3fef3f2d743245
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/yeyiban/learn_chain 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" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b92fb46d65d40e3a77e51a5c7007db3626f8221606c9a5c9a971a6d5c9f8834e
[INFO] running `Command { std: "docker" "start" "-a" "b92fb46d65d40e3a77e51a5c7007db3626f8221606c9a5c9a971a6d5c9f8834e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b92fb46d65d40e3a77e51a5c7007db3626f8221606c9a5c9a971a6d5c9f8834e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b92fb46d65d40e3a77e51a5c7007db3626f8221606c9a5c9a971a6d5c9f8834e", kill_on_drop: false }`
[INFO] [stdout] b92fb46d65d40e3a77e51a5c7007db3626f8221606c9a5c9a971a6d5c9f8834e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 066d15ab920c6aec462d3dfd3a6bf8f75d3cb0f769f071e4ac571608ba92e539
[INFO] running `Command { std: "docker" "start" "-a" "066d15ab920c6aec462d3dfd3a6bf8f75d3cb0f769f071e4ac571608ba92e539", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.178
[INFO] [stderr]    Compiling typenum v1.19.0
[INFO] [stderr]    Compiling const-oid v0.9.6
[INFO] [stderr]    Compiling zerocopy v0.8.31
[INFO] [stderr]    Compiling zeroize v1.8.2
[INFO] [stderr]    Compiling base64ct v1.8.0
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling num-bigint-dig v0.8.6
[INFO] [stderr]    Compiling anyhow v1.0.100
[INFO] [stderr]    Compiling subtle v2.6.1
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling base64 v0.21.7
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]    Compiling pem-rfc7468 v0.7.0
[INFO] [stderr]    Compiling der v0.7.10
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling crypto-common v0.1.7
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling sha2 v0.10.9
[INFO] [stderr]    Compiling spki v0.7.3
[INFO] [stderr]    Compiling signature v2.2.0
[INFO] [stderr]    Compiling pkcs8 v0.10.2
[INFO] [stderr]    Compiling pkcs1 v0.7.5
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling rsa v0.9.9
[INFO] [stderr]    Compiling block_chain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `SignerMut`
[INFO] [stdout]  --> src/first/mod.rs:6:59
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rsa::signature::{RandomizedSigner, SignatureEncoding, SignerMut, Verifier};
[INFO] [stdout]   |                                                           ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generate_key_pair` is never used
[INFO] [stdout]   --> src/first/mod.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn generate_key_pair() -> Result<KeyPair, anyhow::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sign_message_rsa` is never used
[INFO] [stdout]   --> src/first/mod.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn sign_message_rsa(private_key_pem: String, message: String) -> Result<Vec<u8>, anyhow::Error> {    let mut rng = OsRng;
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `verify_signature_rsa` is never used
[INFO] [stdout]   --> src/first/mod.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn verify_signature_rsa(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `KeyPair` is never constructed
[INFO] [stdout]    --> src/first/mod.rs:111:8
[INFO] [stdout]     |
[INFO] [stdout] 111 | struct KeyPair {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.64s
[INFO] running `Command { std: "docker" "inspect" "066d15ab920c6aec462d3dfd3a6bf8f75d3cb0f769f071e4ac571608ba92e539", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "066d15ab920c6aec462d3dfd3a6bf8f75d3cb0f769f071e4ac571608ba92e539", kill_on_drop: false }`
[INFO] [stdout] 066d15ab920c6aec462d3dfd3a6bf8f75d3cb0f769f071e4ac571608ba92e539
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c455f2952460cc4a161bc8668d94d3d5b5b93b84b521c2c5533e251a628612d
[INFO] running `Command { std: "docker" "start" "-a" "2c455f2952460cc4a161bc8668d94d3d5b5b93b84b521c2c5533e251a628612d", kill_on_drop: false }`
[INFO] [stderr]    Compiling block_chain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `SignerMut`
[INFO] [stdout]  --> src/first/mod.rs:6:59
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rsa::signature::{RandomizedSigner, SignatureEncoding, SignerMut, Verifier};
[INFO] [stdout]   |                                                           ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "2c455f2952460cc4a161bc8668d94d3d5b5b93b84b521c2c5533e251a628612d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c455f2952460cc4a161bc8668d94d3d5b5b93b84b521c2c5533e251a628612d", kill_on_drop: false }`
[INFO] [stdout] 2c455f2952460cc4a161bc8668d94d3d5b5b93b84b521c2c5533e251a628612d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3bbe348bcf383dc4cc14f41f1bc497c5a3a8bf105441b1f86d4f0395d2eca4df
[INFO] running `Command { std: "docker" "start" "-a" "3bbe348bcf383dc4cc14f41f1bc497c5a3a8bf105441b1f86d4f0395d2eca4df", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `SignerMut`
[INFO] [stderr]  --> src/first/mod.rs:6:59
[INFO] [stderr]   |
[INFO] [stderr] 6 | use rsa::signature::{RandomizedSigner, SignatureEncoding, SignerMut, Verifier};
[INFO] [stderr]   |                                                           ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `block_chain` (bin "block_chain" test) generated 1 warning (run `cargo fix --bin "block_chain" -p block_chain --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/block_chain-f92e2716a30064bd)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test first::tests::test_sign_and_verify ... ok
[INFO] [stdout] test first::tests::test_pow has been running for over 60 seconds
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "3bbe348bcf383dc4cc14f41f1bc497c5a3a8bf105441b1f86d4f0395d2eca4df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bbe348bcf383dc4cc14f41f1bc497c5a3a8bf105441b1f86d4f0395d2eca4df", kill_on_drop: false }`
[INFO] [stdout] 3bbe348bcf383dc4cc14f41f1bc497c5a3a8bf105441b1f86d4f0395d2eca4df
