[INFO] updating cached repository https://github.com/b4skyx/logchain
[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] 1cb26b5867f96991516d772b6432ed8fb89c1181
[INFO] testing b4skyx/logchain against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fb4skyx%2Flogchain" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/b4skyx/logchain on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/b4skyx/logchain
[INFO] finished tweaking git repo https://github.com/b4skyx/logchain
[INFO] tweaked toml for git repo https://github.com/b4skyx/logchain written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/b4skyx/logchain already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 000eaef0a1eaa3e24382ed4e119a540f830cdf78fe38016ef9335c3c6e83d536
[INFO] running `"docker" "start" "-a" "000eaef0a1eaa3e24382ed4e119a540f830cdf78fe38016ef9335c3c6e83d536"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling subtle v1.0.0
[INFO] [stderr]    Compiling itoa v0.4.5
[INFO] [stderr]    Compiling opaque-debug v0.2.3
[INFO] [stderr]    Compiling byte-tools v0.3.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]    Compiling crypto-mac v0.7.0
[INFO] [stderr]    Compiling blake2 v0.8.1
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling serde_json v1.0.48
[INFO] [stderr]    Compiling block_log v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: cannot borrow `chain` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/main.rs:87:9
[INFO] [stderr]    |
[INFO] [stderr] 84 |         let previous_index = &chain.last().unwrap().index;
[INFO] [stderr]    |                               ----- immutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 87 |         chain.push(create_block(*previous_index, logt, data, previous_hash, String::from(&salt)));
[INFO] [stderr]    |         ^^^^^                   --------------- immutable borrow later used here
[INFO] [stderr]    |         |
[INFO] [stderr]    |         mutable borrow occurs here
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stderr]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.56s
[INFO] running `"docker" "inspect" "000eaef0a1eaa3e24382ed4e119a540f830cdf78fe38016ef9335c3c6e83d536"`
[INFO] running `"docker" "rm" "-f" "000eaef0a1eaa3e24382ed4e119a540f830cdf78fe38016ef9335c3c6e83d536"`
[INFO] [stdout] 000eaef0a1eaa3e24382ed4e119a540f830cdf78fe38016ef9335c3c6e83d536
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 59b4a89c28508c157a06ae425c0a1b25471eebe782fde9700957e5a3c63609d6
[INFO] running `"docker" "start" "-a" "59b4a89c28508c157a06ae425c0a1b25471eebe782fde9700957e5a3c63609d6"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling block_log v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: cannot borrow `chain` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/main.rs:87:9
[INFO] [stderr]    |
[INFO] [stderr] 84 |         let previous_index = &chain.last().unwrap().index;
[INFO] [stderr]    |                               ----- immutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 87 |         chain.push(create_block(*previous_index, logt, data, previous_hash, String::from(&salt)));
[INFO] [stderr]    |         ^^^^^                   --------------- immutable borrow later used here
[INFO] [stderr]    |         |
[INFO] [stderr]    |         mutable borrow occurs here
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stderr]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `"docker" "inspect" "59b4a89c28508c157a06ae425c0a1b25471eebe782fde9700957e5a3c63609d6"`
[INFO] running `"docker" "rm" "-f" "59b4a89c28508c157a06ae425c0a1b25471eebe782fde9700957e5a3c63609d6"`
[INFO] [stdout] 59b4a89c28508c157a06ae425c0a1b25471eebe782fde9700957e5a3c63609d6
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3abf1d012432654a6be7ac1f9743291419af69bae3baa5dec124f43e4783ab68
[INFO] running `"docker" "start" "-a" "3abf1d012432654a6be7ac1f9743291419af69bae3baa5dec124f43e4783ab68"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: cannot borrow `chain` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/main.rs:87:9
[INFO] [stderr]    |
[INFO] [stderr] 84 |         let previous_index = &chain.last().unwrap().index;
[INFO] [stderr]    |                               ----- immutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 87 |         chain.push(create_block(*previous_index, logt, data, previous_hash, String::from(&salt)));
[INFO] [stderr]    |         ^^^^^                   --------------- immutable borrow later used here
[INFO] [stderr]    |         |
[INFO] [stderr]    |         mutable borrow occurs here
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stderr]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/block_log-64298e85d801ddf1
[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 `"docker" "inspect" "3abf1d012432654a6be7ac1f9743291419af69bae3baa5dec124f43e4783ab68"`
[INFO] running `"docker" "rm" "-f" "3abf1d012432654a6be7ac1f9743291419af69bae3baa5dec124f43e4783ab68"`
[INFO] [stdout] 3abf1d012432654a6be7ac1f9743291419af69bae3baa5dec124f43e4783ab68