[INFO] crate kg-symbol 0.1.10 is already in cache
[INFO] checking kg-symbol-0.1.10 against master#7c59a81a5fcbaaca311f744cd7c68d99bfbb05d3 for pr-71873
[INFO] extracting crate kg-symbol 0.1.10 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate kg-symbol 0.1.10 on toolchain 7c59a81a5fcbaaca311f744cd7c68d99bfbb05d3
[INFO] running `"/workspace/cargo-home/bin/cargo" "+7c59a81a5fcbaaca311f744cd7c68d99bfbb05d3" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate kg-symbol 0.1.10
[INFO] finished tweaking crates.io crate kg-symbol 0.1.10
[INFO] tweaked toml for crates.io crate kg-symbol 0.1.10 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+7c59a81a5fcbaaca311f744cd7c68d99bfbb05d3" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+7c59a81a5fcbaaca311f744cd7c68d99bfbb05d3" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+7c59a81a5fcbaaca311f744cd7c68d99bfbb05d3" "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] 15730784f7aaf4b15eb9c2e9c4475272e0741ee3db90abb5d102c0decc560023
[INFO] running `"docker" "start" "-a" "15730784f7aaf4b15eb9c2e9c4475272e0741ee3db90abb5d102c0decc560023"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]    Compiling serde v1.0.110
[INFO] [stderr]    Compiling heapsize v0.4.2
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking lock_api v0.2.0
[INFO] [stderr]    Compiling parking_lot_core v0.5.0
[INFO] [stderr]    Compiling parking_lot v0.8.0
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]     Checking kg-symbol v0.1.10 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0432]: unresolved import `std::alloc::Alloc`
[INFO] [stderr]   --> 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]    --> 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]    --> 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" "15730784f7aaf4b15eb9c2e9c4475272e0741ee3db90abb5d102c0decc560023"`
[INFO] running `"docker" "rm" "-f" "15730784f7aaf4b15eb9c2e9c4475272e0741ee3db90abb5d102c0decc560023"`
[INFO] [stdout] 15730784f7aaf4b15eb9c2e9c4475272e0741ee3db90abb5d102c0decc560023