[INFO] fetching crate crdt_tree 0.0.15...
[INFO] checking crdt_tree-0.0.15 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] extracting crate crdt_tree 0.0.15 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate crdt_tree 0.0.15 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate crdt_tree 0.0.15
[INFO] finished tweaking crates.io crate crdt_tree 0.0.15
[INFO] tweaked toml for crates.io crate crdt_tree 0.0.15 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate crdt_tree 0.0.15 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6f27731dfa99b3f4cf0c4c178def4cb5fa9c347aa8d4437604fe0ef3d9cd7e16
[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" "6f27731dfa99b3f4cf0c4c178def4cb5fa9c347aa8d4437604fe0ef3d9cd7e16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6f27731dfa99b3f4cf0c4c178def4cb5fa9c347aa8d4437604fe0ef3d9cd7e16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f27731dfa99b3f4cf0c4c178def4cb5fa9c347aa8d4437604fe0ef3d9cd7e16", kill_on_drop: false }`
[INFO] [stdout] 6f27731dfa99b3f4cf0c4c178def4cb5fa9c347aa8d4437604fe0ef3d9cd7e16
[INFO] running `Command { std: "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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--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] 049cb3787fb130c528ccdba01b5b06834e6e47276a7803850194756bf7850fbf
[INFO] running `Command { std: "docker" "start" "-a" "049cb3787fb130c528ccdba01b5b06834e6e47276a7803850194756bf7850fbf", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking radium v0.3.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking bitvec v0.17.4
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking quickcheck v0.9.2
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]     Checking serde v1.0.126
[INFO] [stderr]     Checking crdts v4.3.0
[INFO] [stderr]     Checking crdt_tree v0.0.15 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `replica`
[INFO] [stdout]    --> examples/demo.rs:251:9
[INFO] [stdout]     |
[INFO] [stdout] 251 |         pub replica: TypeActor,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ops_before_truncate`
[INFO] [stdout]    --> examples/demo.rs:252:9
[INFO] [stdout]     |
[INFO] [stdout] 252 |         pub ops_before_truncate: usize,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ops_after_truncate`
[INFO] [stdout]    --> examples/demo.rs:253:9
[INFO] [stdout]     |
[INFO] [stdout] 253 |         pub ops_after_truncate: usize,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.83s
[INFO] running `Command { std: "docker" "inspect" "049cb3787fb130c528ccdba01b5b06834e6e47276a7803850194756bf7850fbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "049cb3787fb130c528ccdba01b5b06834e6e47276a7803850194756bf7850fbf", kill_on_drop: false }`
[INFO] [stdout] 049cb3787fb130c528ccdba01b5b06834e6e47276a7803850194756bf7850fbf