[INFO] fetching crate mvcc 0.0.1...
[INFO] checking mvcc-0.0.1 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate mvcc 0.0.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate mvcc 0.0.1 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mvcc 0.0.1
[INFO] finished tweaking crates.io crate mvcc 0.0.1
[INFO] tweaked toml for crates.io crate mvcc 0.0.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded historian v3.0.11
[INFO] [stderr]   Downloaded sled_sync v0.2.2
[INFO] [stderr]   Downloaded pagetable v0.0.3
[INFO] [stderr]   Downloaded sled v0.15.21
[INFO] [stderr]   Downloaded pagecache v0.6.0
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1ae4c79ffb7714cdcb3aa588e81ce816fdf7ae0f03ae96fe889d19f99f8afb6f
[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" "1ae4c79ffb7714cdcb3aa588e81ce816fdf7ae0f03ae96fe889d19f99f8afb6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ae4c79ffb7714cdcb3aa588e81ce816fdf7ae0f03ae96fe889d19f99f8afb6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ae4c79ffb7714cdcb3aa588e81ce816fdf7ae0f03ae96fe889d19f99f8afb6f", kill_on_drop: false }`
[INFO] [stdout] 1ae4c79ffb7714cdcb3aa588e81ce816fdf7ae0f03ae96fe889d19f99f8afb6f
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 811a89a9c62f8dcc6169603e121afbacf6dc1c91e4050e1e259afbe676bfba8f
[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" "811a89a9c62f8dcc6169603e121afbacf6dc1c91e4050e1e259afbe676bfba8f", kill_on_drop: false }`
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]     Checking crossbeam-epoch v0.6.1
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking pagetable v0.0.3
[INFO] [stderr]     Checking sled_sync v0.2.2
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]     Checking historian v3.0.11
[INFO] [stderr]     Checking bincode v1.3.1
[INFO] [stderr]     Checking bincode v0.9.2
[INFO] [stderr]     Checking pagecache v0.6.0
[INFO] [stderr]     Checking sled v0.15.21
[INFO] [stderr]     Checking mvcc v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `sled::DbResult`
[INFO] [stdout]  --> src/db.rs:3:20
[INFO] [stdout]   |
[INFO] [stdout] 3 | use sled::{Config, DbResult, Tree};
[INFO] [stdout]   |                    ^^^^^^^^
[INFO] [stdout]   |                    |
[INFO] [stdout]   |                    no `DbResult` in the root
[INFO] [stdout]   |                    help: a similar name exists in the module: `Result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `sled::DbResult`
[INFO] [stdout]  --> src/db.rs:3:20
[INFO] [stdout]   |
[INFO] [stdout] 3 | use sled::{Config, DbResult, Tree};
[INFO] [stdout]   |                    ^^^^^^^^
[INFO] [stdout]   |                    |
[INFO] [stdout]   |                    no `DbResult` in the root
[INFO] [stdout]   |                    help: a similar name exists in the module: `Result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mvcc`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "811a89a9c62f8dcc6169603e121afbacf6dc1c91e4050e1e259afbe676bfba8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "811a89a9c62f8dcc6169603e121afbacf6dc1c91e4050e1e259afbe676bfba8f", kill_on_drop: false }`
[INFO] [stdout] 811a89a9c62f8dcc6169603e121afbacf6dc1c91e4050e1e259afbe676bfba8f