[INFO] fetching crate search_trees 0.0.3...
[INFO] checking search_trees-0.0.3 against master#f82664191d0e8764b7435b9d72eb0e366b8b1464 for pr-83354
[INFO] extracting crate search_trees 0.0.3 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate search_trees 0.0.3 on toolchain f82664191d0e8764b7435b9d72eb0e366b8b1464
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate search_trees 0.0.3
[INFO] finished tweaking crates.io crate search_trees 0.0.3
[INFO] tweaked toml for crates.io crate search_trees 0.0.3 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate search_trees 0.0.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d4506c3c10628e2acdf0abe3d027d83146fa319e127704029862f8ce1b57135b
[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" "d4506c3c10628e2acdf0abe3d027d83146fa319e127704029862f8ce1b57135b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d4506c3c10628e2acdf0abe3d027d83146fa319e127704029862f8ce1b57135b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4506c3c10628e2acdf0abe3d027d83146fa319e127704029862f8ce1b57135b", kill_on_drop: false }`
[INFO] [stdout] d4506c3c10628e2acdf0abe3d027d83146fa319e127704029862f8ce1b57135b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b7da2e2764fba4ba3654cf3c20b99d67039d65ac986304863059bef4d2a45ada
[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" "b7da2e2764fba4ba3654cf3c20b99d67039d65ac986304863059bef4d2a45ada", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]     Checking half v1.6.0
[INFO] [stderr]     Checking search_trees v0.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stdout] error: expected one of `!` or `::`, found keyword `use`
[INFO] [stdout]   --> src/avltree.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | ppppp
[INFO] [stdout]    |      - expected one of `!` or `::`
[INFO] [stdout] 11 | use std::cell::RefCell;
[INFO] [stdout]    | ^^^ unexpected token
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stdout] error[E0432]: unresolved import `crate::avltree::AVLTree`
[INFO] [stdout]   --> src/prelude.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub use crate::avltree::AVLTree;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^ no `AVLTree` in `avltree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `search_trees`
[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] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "b7da2e2764fba4ba3654cf3c20b99d67039d65ac986304863059bef4d2a45ada", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7da2e2764fba4ba3654cf3c20b99d67039d65ac986304863059bef4d2a45ada", kill_on_drop: false }`
[INFO] [stdout] b7da2e2764fba4ba3654cf3c20b99d67039d65ac986304863059bef4d2a45ada