[INFO] updating cached repository https://github.com/minmin0530/hello
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7618d6b4b394cd8ec5b0824301b3333da83c69a9
[INFO] testing minmin0530/hello against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fminmin0530%2Fhello" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/minmin0530/hello on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/minmin0530/hello
[INFO] finished tweaking git repo https://github.com/minmin0530/hello
[INFO] tweaked toml for git repo https://github.com/minmin0530/hello written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/minmin0530/hello already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 783e23121588d3ec2e5eb3f340e0d0de64349e5d5c5d9425079bf9b3eff769a4
[INFO] running `"docker" "start" "-a" "783e23121588d3ec2e5eb3f340e0d0de64349e5d5c5d9425079bf9b3eff769a4"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0432]: unresolved import `std::alloc::Alloc`
[INFO] [stderr]  --> src/main.rs:7:18
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::alloc::{Alloc, System, Layout};
[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[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(allocator_api)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `alloc` found for struct `std::alloc::System` in the current scope
[INFO] [stderr]    --> src/main.rs:107:63
[INFO] [stderr]     |
[INFO] [stderr] 107 |     mem::transmute::<std::ptr::NonNull<u8>, *mut u8 >( System.alloc(layout).unwrap() )
[INFO] [stderr]     |                                                               ^^^^^ method not found in `std::alloc::System`
[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] 2   | use std::alloc::GlobalAlloc;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `dealloc` found for struct `std::alloc::System` in the current scope
[INFO] [stderr]    --> src/main.rs:115:12
[INFO] [stderr]     |
[INFO] [stderr] 115 |     System.dealloc(mem::transmute::< *mut u8, std::ptr::NonNull<u8> >( ptr ), layout);
[INFO] [stderr]     |            ^^^^^^^ method not found in `std::alloc::System`
[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] 2   | use std::alloc::GlobalAlloc;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0554, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `hello`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "783e23121588d3ec2e5eb3f340e0d0de64349e5d5c5d9425079bf9b3eff769a4"`
[INFO] running `"docker" "rm" "-f" "783e23121588d3ec2e5eb3f340e0d0de64349e5d5c5d9425079bf9b3eff769a4"`
[INFO] [stdout] 783e23121588d3ec2e5eb3f340e0d0de64349e5d5c5d9425079bf9b3eff769a4