[INFO] cloning repository https://github.com/strassl/blockchain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/strassl/blockchain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstrassl%2Fblockchain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstrassl%2Fblockchain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 488351e7bb5d038c1c0f486f64300ae1970eea53
[INFO] testing strassl/blockchain against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstrassl%2Fblockchain" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/strassl/blockchain on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/strassl/blockchain
[INFO] finished tweaking git repo https://github.com/strassl/blockchain
[INFO] tweaked toml for git repo https://github.com/strassl/blockchain written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/strassl/blockchain already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 64f2403e61fd421fe6212673edb5700cf637930fabad664f608375cfa192dc66
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "64f2403e61fd421fe6212673edb5700cf637930fabad664f608375cfa192dc66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "64f2403e61fd421fe6212673edb5700cf637930fabad664f608375cfa192dc66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64f2403e61fd421fe6212673edb5700cf637930fabad664f608375cfa192dc66", kill_on_drop: false }`
[INFO] [stdout] 64f2403e61fd421fe6212673edb5700cf637930fabad664f608375cfa192dc66
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=warn" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 46e59e1682b7e3febc81b12cd88cdd125f64ce9562ac072377cf2308ec54de64
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "46e59e1682b7e3febc81b12cd88cdd125f64ce9562ac072377cf2308ec54de64", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.23
[INFO] [stderr]    Compiling gcc v0.3.49
[INFO] [stderr]    Compiling serde v1.0.8
[INFO] [stderr]    Compiling byteorder v1.0.0
[INFO] [stderr]    Compiling serde_derive_internals v0.15.1
[INFO] [stderr]    Compiling thread-id v3.1.0
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling time v0.1.37
[INFO] [stderr]    Compiling thread_local v0.3.3
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling serde_derive v1.0.8
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stderr]    Compiling env_logger v0.4.3
[INFO] [stderr]    Compiling serde_json v1.0.2
[INFO] [stderr]    Compiling blockchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `serialize`
[INFO] [stdout]  --> src/chain/serialization.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn serialize(chain: &Chain) -> Vec<u8> {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `deserialize`
[INFO] [stdout]   --> src/chain/serialization.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn deserialize(data: &Vec<u8>) -> Result<Chain, String> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `deserialize`
[INFO] [stdout]   --> src/main.rs:10:39
[INFO] [stdout]    |
[INFO] [stdout] 10 | use chain::serialization::{serialize, deserialize};
[INFO] [stdout]    |                                       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `deserialize`
[INFO] [stdout]   --> src/chain/serialization.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn deserialize(data: &Vec<u8>) -> Result<Chain, String> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.80s
[INFO] running `Command { std: "docker" "inspect" "46e59e1682b7e3febc81b12cd88cdd125f64ce9562ac072377cf2308ec54de64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46e59e1682b7e3febc81b12cd88cdd125f64ce9562ac072377cf2308ec54de64", kill_on_drop: false }`
[INFO] [stdout] 46e59e1682b7e3febc81b12cd88cdd125f64ce9562ac072377cf2308ec54de64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=warn" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] dfa13a2905135373006ec441f3171178bec0184a5b5e084f29b5c5572d65f019
[INFO] running `Command { std: "docker" "start" "-a" "dfa13a2905135373006ec441f3171178bec0184a5b5e084f29b5c5572d65f019", kill_on_drop: false }`
[INFO] [stderr]    Compiling blockchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `serialize`
[INFO] [stdout]  --> src/chain/serialization.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn serialize(chain: &Chain) -> Vec<u8> {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `deserialize`
[INFO] [stdout]   --> src/chain/serialization.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn deserialize(data: &Vec<u8>) -> Result<Chain, String> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `deserialize`
[INFO] [stdout]   --> src/main.rs:10:39
[INFO] [stdout]    |
[INFO] [stdout] 10 | use chain::serialization::{serialize, deserialize};
[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] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.99s
[INFO] running `Command { std: "docker" "inspect" "dfa13a2905135373006ec441f3171178bec0184a5b5e084f29b5c5572d65f019", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfa13a2905135373006ec441f3171178bec0184a5b5e084f29b5c5572d65f019", kill_on_drop: false }`
[INFO] [stdout] dfa13a2905135373006ec441f3171178bec0184a5b5e084f29b5c5572d65f019
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=warn" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cc6841e251ab4e7ae5afe593640feea3672de697e3081e2658d38d19290f02a2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "cc6841e251ab4e7ae5afe593640feea3672de697e3081e2658d38d19290f02a2", kill_on_drop: false }`
[INFO] [stderr] warning: function is never used: `serialize`
[INFO] [stderr]  --> src/chain/serialization.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn serialize(chain: &Chain) -> Vec<u8> {
[INFO] [stderr]   |        ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `deserialize`
[INFO] [stderr]   --> src/chain/serialization.rs:10:8
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub fn deserialize(data: &Vec<u8>) -> Result<Chain, String> {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `deserialize`
[INFO] [stderr]   --> src/main.rs:10:39
[INFO] [stderr]    |
[INFO] [stderr] 10 | use chain::serialization::{serialize, deserialize};
[INFO] [stderr]    |                                       ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.16s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/blockchain-b4e5346e667040af
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test chain::test::verify_works ... ok
[INFO] [stdout] test chain::test::init_works ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/blockchain-14c38a5e468dc7a2
[INFO] [stdout] test chain::test::push_works ... ok
[INFO] [stdout] test chain::serialization::test::serialize_deserialize_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test chain::serialization::test::serialize_deserialize_works ... ok
[INFO] [stdout] test chain::test::init_works ... ok
[INFO] [stdout] test chain::test::push_works ... ok
[INFO] [stdout] test chain::test::verify_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests blockchain
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "cc6841e251ab4e7ae5afe593640feea3672de697e3081e2658d38d19290f02a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc6841e251ab4e7ae5afe593640feea3672de697e3081e2658d38d19290f02a2", kill_on_drop: false }`
[INFO] [stdout] cc6841e251ab4e7ae5afe593640feea3672de697e3081e2658d38d19290f02a2