[INFO] fetching crate postgres_alloc 0.0.1...
[INFO] checking postgres_alloc-0.0.1 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate postgres_alloc 0.0.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate postgres_alloc 0.0.1 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate postgres_alloc 0.0.1
[INFO] finished tweaking crates.io crate postgres_alloc 0.0.1
[INFO] tweaked toml for crates.io crate postgres_alloc 0.0.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"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" "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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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] decf9411d5fdf87a1be5892c9cd64995dc4eb8f95c70df3c4d2b141dba40d4b5
[INFO] running `"docker" "start" "-a" "decf9411d5fdf87a1be5892c9cd64995dc4eb8f95c70df3c4d2b141dba40d4b5"`
[INFO] [stderr]     Checking postgres_alloc v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0557]: feature has been removed
[INFO] [stderr]  --> src/lib.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(allocator)]
[INFO] [stderr]   |            ^^^^^^^^^ feature has been removed
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: non-builtin inner attributes are unstable
[INFO] [stderr]  --> src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![allocator]
[INFO] [stderr]   | ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: for more information, see https://github.com/rust-lang/rust/issues/54726
[INFO] [stderr]   = help: add `#![feature(custom_inner_attributes)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0557]: feature has been removed
[INFO] [stderr]  --> src/lib.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(allocator)]
[INFO] [stderr]   |            ^^^^^^^^^ feature has been removed
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: non-builtin inner attributes are unstable
[INFO] [stderr]  --> src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![allocator]
[INFO] [stderr]   | ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: for more information, see https://github.com/rust-lang/rust/issues/54726
[INFO] [stderr]   = help: add `#![feature(custom_inner_attributes)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0464]: multiple matching crates for `libc`
[INFO] [stderr]  --> src/lib.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | extern crate libc;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: candidates:
[INFO] [stderr]           crate `libc`: /opt/rustwide/rustup-home/toolchains/2748a9fd93dd1a00a4521f4f16de5befbf77f6cd/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-8fef15f34590e6d5.rlib
[INFO] [stderr]           crate `libc`: /opt/rustwide/rustup-home/toolchains/2748a9fd93dd1a00a4521f4f16de5befbf77f6cd/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-d5a051182b3b0d49.rlib
[INFO] [stderr] 
[INFO] [stderr] error[E0463]: can't find crate for `libc`
[INFO] [stderr]  --> src/lib.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | extern crate libc;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0463, E0557, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0463`.
[INFO] [stderr] error: could not compile `postgres_alloc`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0464]: multiple matching crates for `libc`
[INFO] [stderr]  --> src/lib.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | extern crate libc;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: candidates:
[INFO] [stderr]           crate `libc`: /opt/rustwide/rustup-home/toolchains/2748a9fd93dd1a00a4521f4f16de5befbf77f6cd/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-8fef15f34590e6d5.rlib
[INFO] [stderr]           crate `libc`: /opt/rustwide/rustup-home/toolchains/2748a9fd93dd1a00a4521f4f16de5befbf77f6cd/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-d5a051182b3b0d49.rlib
[INFO] [stderr] 
[INFO] [stderr] error[E0463]: can't find crate for `libc`
[INFO] [stderr]  --> src/lib.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | extern crate libc;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0463, E0557, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0463`.
[INFO] [stderr] error: could not compile `postgres_alloc`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "decf9411d5fdf87a1be5892c9cd64995dc4eb8f95c70df3c4d2b141dba40d4b5"`
[INFO] running `"docker" "rm" "-f" "decf9411d5fdf87a1be5892c9cd64995dc4eb8f95c70df3c4d2b141dba40d4b5"`
[INFO] [stdout] decf9411d5fdf87a1be5892c9cd64995dc4eb8f95c70df3c4d2b141dba40d4b5