[INFO] updating cached repository https://github.com/annikoff/hmbc
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 72f75e1920bc90f0f3aa1f01c3b3bd3b34664090
[INFO] checking annikoff/hmbc against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fannikoff%2Fhmbc" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/annikoff/hmbc on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/annikoff/hmbc
[INFO] finished tweaking git repo https://github.com/annikoff/hmbc
[INFO] tweaked toml for git repo https://github.com/annikoff/hmbc written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/annikoff/hmbc already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8450787ca2d23f095192e76ed9201b8f03bef03224da8b81d508b2ad135687da
[INFO] running `"docker" "start" "-a" "8450787ca2d23f095192e76ed9201b8f03bef03224da8b81d508b2ad135687da"`
[INFO] [stderr]     Checking byteorder v1.2.3
[INFO] [stderr]     Checking libc v0.2.42
[INFO] [stderr]     Checking sha1 v0.6.0
[INFO] [stderr]    Compiling serde v1.0.70
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]     Checking bincode v1.0.1
[INFO] [stderr]     Checking hmbc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `timestamp`
[INFO] [stderr]   --> src/block.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     pub fn timestamp(&self) -> i64 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `previous_hash`
[INFO] [stderr]   --> src/block.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     pub fn previous_hash(&self) -> &str {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `content`
[INFO] [stderr]   --> src/block.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |     pub fn content(&self) -> &str {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `content`
[INFO] [stderr]   --> src/block_content.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn content(&self) -> &String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `block`
[INFO] [stderr]   --> src/blockchain.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn block(&self, index: usize) -> Option<&Block> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]   --> src/blockchain.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     pub fn len(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `timestamp`
[INFO] [stderr]   --> src/block.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     pub fn timestamp(&self) -> i64 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.94s
[INFO] running `"docker" "inspect" "8450787ca2d23f095192e76ed9201b8f03bef03224da8b81d508b2ad135687da"`
[INFO] running `"docker" "rm" "-f" "8450787ca2d23f095192e76ed9201b8f03bef03224da8b81d508b2ad135687da"`
[INFO] [stdout] 8450787ca2d23f095192e76ed9201b8f03bef03224da8b81d508b2ad135687da