[INFO] fetching crate luos_memory_sandbox 0.0.1...
[INFO] checking luos_memory_sandbox-0.0.1 against master#c5fbcd35a8217a17f6b63a22217ace06cf8f5f02 for pr-86194
[INFO] extracting crate luos_memory_sandbox 0.0.1 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate luos_memory_sandbox 0.0.1 on toolchain c5fbcd35a8217a17f6b63a22217ace06cf8f5f02
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate luos_memory_sandbox 0.0.1
[INFO] finished tweaking crates.io crate luos_memory_sandbox 0.0.1
[INFO] tweaked toml for crates.io crate luos_memory_sandbox 0.0.1 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "metadata" "--no-deps" "--format-version=1", 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] eb12c7562fa435eb883b0c14573a58f6520a390cac0e542da715087309270e9d
[INFO] running `Command { std: "docker" "start" "-a" "eb12c7562fa435eb883b0c14573a58f6520a390cac0e542da715087309270e9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb12c7562fa435eb883b0c14573a58f6520a390cac0e542da715087309270e9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb12c7562fa435eb883b0c14573a58f6520a390cac0e542da715087309270e9d", kill_on_drop: false }`
[INFO] [stdout] eb12c7562fa435eb883b0c14573a58f6520a390cac0e542da715087309270e9d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bd26a25a92deee15b17b92c4239da3514605f689a8614b248d921c46472c267a
[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" "bd26a25a92deee15b17b92c4239da3514605f689a8614b248d921c46472c267a", kill_on_drop: false }`
[INFO] [stderr]     Checking luos_memory_sandbox v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> src/lib.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | #![feature(const_fn, const_let)]
[INFO] [stdout]    |            ^^^^^^^^ feature has been removed
[INFO] [stdout]    |
[INFO] [stdout]    = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved imports `std::alloc::Alloc`, `std::alloc::AllocErr`
[INFO] [stdout]  --> src/mem_sandbox.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::alloc::{Alloc, GlobalAlloc, Layout, AllocErr};    
[INFO] [stdout]   |                  ^^^^^ no `Alloc` in `alloc` ^^^^^^^^ no `AllocErr` in `alloc`
[INFO] [stdout]   |
[INFO] [stdout] help: a similar name exists in the module
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::alloc::{alloc, GlobalAlloc, Layout, AllocErr};    
[INFO] [stdout]   |                  ^^^^^
[INFO] [stdout] help: a similar name exists in the module
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::alloc::{Alloc, GlobalAlloc, Layout, AllocError};    
[INFO] [stdout]   |                                              ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::alloc::Alloc`
[INFO] [stdout]    --> src/mem_sandbox.rs:266:22
[INFO] [stdout]     |
[INFO] [stdout] 266 |     use std::alloc::{Alloc, Layout};
[INFO] [stdout]     |                      ^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      no `Alloc` in `alloc`
[INFO] [stdout]     |                      help: a similar name exists in the module: `alloc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::alloc::Alloc`
[INFO] [stdout]    --> src/mem_sandbox.rs:332:22
[INFO] [stdout]     |
[INFO] [stdout] 332 |     use std::alloc::{Alloc, Layout};
[INFO] [stdout]     |                      ^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      no `Alloc` in `alloc`
[INFO] [stdout]     |                      help: a similar name exists in the module: `alloc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::alloc::Alloc`
[INFO] [stdout]    --> src/mem_sandbox.rs:358:22
[INFO] [stdout]     |
[INFO] [stdout] 358 |     use std::alloc::{Alloc, Layout};
[INFO] [stdout]     |                      ^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      no `Alloc` in `alloc`
[INFO] [stdout]     |                      help: a similar name exists in the module: `alloc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> src/lib.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | #![feature(const_fn, const_let)]
[INFO] [stdout]    |            ^^^^^^^^ feature has been removed
[INFO] [stdout]    |
[INFO] [stdout]    = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `luos_memory_sandbox`
[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[E0432]: unresolved imports `std::alloc::Alloc`, `std::alloc::AllocErr`
[INFO] [stdout]  --> src/mem_sandbox.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::alloc::{Alloc, GlobalAlloc, Layout, AllocErr};    
[INFO] [stdout]   |                  ^^^^^ no `Alloc` in `alloc` ^^^^^^^^ no `AllocErr` in `alloc`
[INFO] [stdout]   |
[INFO] [stdout] help: a similar name exists in the module
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::alloc::{alloc, GlobalAlloc, Layout, AllocErr};    
[INFO] [stdout]   |                  ^^^^^
[INFO] [stdout] help: a similar name exists in the module
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::alloc::{Alloc, GlobalAlloc, Layout, AllocError};    
[INFO] [stdout]   |                                              ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "bd26a25a92deee15b17b92c4239da3514605f689a8614b248d921c46472c267a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd26a25a92deee15b17b92c4239da3514605f689a8614b248d921c46472c267a", kill_on_drop: false }`
[INFO] [stdout] bd26a25a92deee15b17b92c4239da3514605f689a8614b248d921c46472c267a