[INFO] cloning repository https://github.com/luciferarm/logchain [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/luciferarm/logchain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluciferarm%2Flogchain", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluciferarm%2Flogchain'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 20bde73567abeecee8094230b316e117f4982f11 [INFO] testing luciferarm/logchain against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluciferarm%2Flogchain" "/workspace/builds/worker-15/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/luciferarm/logchain 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/luciferarm/logchain [INFO] finished tweaking git repo https://github.com/luciferarm/logchain [INFO] tweaked toml for git repo https://github.com/luciferarm/logchain written to /workspace/builds/worker-15/source/Cargo.toml [INFO] crate git repo https://github.com/luciferarm/logchain 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-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] [stdout] cd2806b474b9a993460056b6ab60d580314d55101b451b554a4743804c6963a4 [INFO] running `Command { std: "docker" "start" "-a" "cd2806b474b9a993460056b6ab60d580314d55101b451b554a4743804c6963a4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "cd2806b474b9a993460056b6ab60d580314d55101b451b554a4743804c6963a4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cd2806b474b9a993460056b6ab60d580314d55101b451b554a4743804c6963a4", kill_on_drop: false }` [INFO] [stdout] cd2806b474b9a993460056b6ab60d580314d55101b451b554a4743804c6963a4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] [stdout] 962706f59ee91bfdf5145a0130e9aed3987794859815b9428fd7d060b398ba47 [INFO] running `Command { std: "docker" "start" "-a" "962706f59ee91bfdf5145a0130e9aed3987794859815b9428fd7d060b398ba47", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.16 [INFO] [stderr] Compiling itoa v0.4.5 [INFO] [stderr] Compiling quote v1.0.2 [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 v1.0.104 [INFO] [stderr] Compiling serde_json v1.0.48 [INFO] [stderr] Compiling block_log v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: cannot borrow `chain` as mutable because it is also borrowed as immutable [INFO] [stdout] --> src/main.rs:97:9 [INFO] [stdout] | [INFO] [stdout] 94 | let previous_index = &chain.last().unwrap().index; [INFO] [stdout] | ----- immutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 97 | chain.push(create_block( [INFO] [stdout] | ^^^^^ mutable borrow occurs here [INFO] [stdout] 98 | *previous_index, [INFO] [stdout] | --------------- immutable borrow later used here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default [INFO] [stdout] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stdout] = note: for more information, see issue #59159 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 21.63s [INFO] running `Command { std: "docker" "inspect" "962706f59ee91bfdf5145a0130e9aed3987794859815b9428fd7d060b398ba47", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "962706f59ee91bfdf5145a0130e9aed3987794859815b9428fd7d060b398ba47", kill_on_drop: false }` [INFO] [stdout] 962706f59ee91bfdf5145a0130e9aed3987794859815b9428fd7d060b398ba47 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] [stdout] 0db3ca1d2d4ed9175f53911808f98b2deb60b5301951a0bba2dd06c7038d0e9d [INFO] running `Command { std: "docker" "start" "-a" "0db3ca1d2d4ed9175f53911808f98b2deb60b5301951a0bba2dd06c7038d0e9d", kill_on_drop: false }` [INFO] [stderr] Compiling block_log v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: cannot borrow `chain` as mutable because it is also borrowed as immutable [INFO] [stdout] --> src/main.rs:97:9 [INFO] [stdout] | [INFO] [stdout] 94 | let previous_index = &chain.last().unwrap().index; [INFO] [stdout] | ----- immutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 97 | chain.push(create_block( [INFO] [stdout] | ^^^^^ mutable borrow occurs here [INFO] [stdout] 98 | *previous_index, [INFO] [stdout] | --------------- immutable borrow later used here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default [INFO] [stdout] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stdout] = note: for more information, see issue #59159 [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.54s [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "0db3ca1d2d4ed9175f53911808f98b2deb60b5301951a0bba2dd06c7038d0e9d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0db3ca1d2d4ed9175f53911808f98b2deb60b5301951a0bba2dd06c7038d0e9d", kill_on_drop: false }` [INFO] [stdout] 0db3ca1d2d4ed9175f53911808f98b2deb60b5301951a0bba2dd06c7038d0e9d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] [stdout] 0772f9bd852ba0db6eaa9d2b73fd6f02d61ec3d84978eeb2fce968b6ce95b236 [INFO] running `Command { std: "docker" "start" "-a" "0772f9bd852ba0db6eaa9d2b73fd6f02d61ec3d84978eeb2fce968b6ce95b236", kill_on_drop: false }` [INFO] [stderr] warning: cannot borrow `chain` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/main.rs:97:9 [INFO] [stderr] | [INFO] [stderr] 94 | let previous_index = &chain.last().unwrap().index; [INFO] [stderr] | ----- immutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 97 | chain.push(create_block( [INFO] [stderr] | ^^^^^ mutable borrow occurs here [INFO] [stderr] 98 | *previous_index, [INFO] [stderr] | --------------- immutable borrow later used 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 [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/block_log-1bcd4f0da9697307) [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" "0772f9bd852ba0db6eaa9d2b73fd6f02d61ec3d84978eeb2fce968b6ce95b236", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0772f9bd852ba0db6eaa9d2b73fd6f02d61ec3d84978eeb2fce968b6ce95b236", kill_on_drop: false }` [INFO] [stdout] 0772f9bd852ba0db6eaa9d2b73fd6f02d61ec3d84978eeb2fce968b6ce95b236