[INFO] crate kg-js 0.1.1 is already in cache
[INFO] checking kg-js-0.1.1 against master#3dbade652ed8ebac70f903e01f51cd92c4e4302c for pr-69880
[INFO] extracting crate kg-js 0.1.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate kg-js 0.1.1 on toolchain 3dbade652ed8ebac70f903e01f51cd92c4e4302c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate kg-js 0.1.1
[INFO] finished tweaking crates.io crate kg-js 0.1.1
[INFO] tweaked toml for crates.io crate kg-js 0.1.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=forbid" "-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" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] cdeac3e699ca2575eeda69fe28b77306c43e42d5a89be3e10cb8e48ebaa6f827
[INFO] running `"docker" "start" "-a" "cdeac3e699ca2575eeda69fe28b77306c43e42d5a89be3e10cb8e48ebaa6f827"`
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]    Compiling static_assertions v0.3.4
[INFO] [stderr]     Checking rlibc v1.0.0
[INFO] [stderr]    Compiling kg-utils v0.2.4
[INFO] [stderr]    Compiling synstructure v0.5.2
[INFO] [stderr]     Checking kg-utils v0.3.1
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling backtrace-sys v0.1.34
[INFO] [stderr]     Checking lexical-core v0.6.7
[INFO] [stderr]    Compiling kg-js v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking parking_lot_core v0.5.0
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling heapsize_derive v0.1.4
[INFO] [stderr]     Checking parking_lot v0.8.0
[INFO] [stderr]     Checking backtrace v0.3.41
[INFO] [stderr]     Checking kg-symbol v0.1.10
[INFO] [stderr] error[E0432]: unresolved import `std::alloc::Alloc`
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/kg-symbol-0.1.10/src/lib.rs:10:26
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::alloc::{Layout, Alloc, Global, handle_alloc_error};
[INFO] [stderr]    |                          ^^^^^
[INFO] [stderr]    |                          |
[INFO] [stderr]    |                          no `Alloc` in `alloc`
[INFO] [stderr]    |                          help: a similar name exists in the module: `alloc`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `alloc` found for struct `std::alloc::Global` in the current scope
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/kg-symbol-0.1.10/src/lib.rs:56:31
[INFO] [stderr]    |
[INFO] [stderr] 56 |             let data = Global.alloc(layout).unwrap_or_else(|_| handle_alloc_error(layout));
[INFO] [stderr]    |                               ^^^^^ method not found in `std::alloc::Global`
[INFO] [stderr]    |
[INFO] [stderr]    = help: items from traits can only be used if the trait is in scope
[INFO] [stderr] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stderr]    |
[INFO] [stderr] 6  | use std::alloc::AllocRef;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `dealloc` found for struct `std::alloc::Global` in the current scope
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/kg-symbol-0.1.10/src/lib.rs:74:20
[INFO] [stderr]    |
[INFO] [stderr] 74 |             Global.dealloc(self.0, layout);
[INFO] [stderr]    |                    ^^^^^^^ method not found in `std::alloc::Global`
[INFO] [stderr]    |
[INFO] [stderr]    = help: items from traits can only be used if the trait is in scope
[INFO] [stderr] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stderr]    |
[INFO] [stderr] 6  | use std::alloc::AllocRef;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `kg-symbol`.
[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 `"docker" "inspect" "cdeac3e699ca2575eeda69fe28b77306c43e42d5a89be3e10cb8e48ebaa6f827"`
[INFO] running `"docker" "rm" "-f" "cdeac3e699ca2575eeda69fe28b77306c43e42d5a89be3e10cb8e48ebaa6f827"`
[INFO] [stdout] cdeac3e699ca2575eeda69fe28b77306c43e42d5a89be3e10cb8e48ebaa6f827