[INFO] crate compiler-builtins-snapshot 0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a is already in cache
[INFO] testing compiler-builtins-snapshot-0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a against beta-2020-07-24 for beta-1.46-1
[INFO] extracting crate compiler-builtins-snapshot 0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate compiler-builtins-snapshot 0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate compiler-builtins-snapshot 0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a
[INFO] finished tweaking crates.io crate compiler-builtins-snapshot 0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a
[INFO] tweaked toml for crates.io crate compiler-builtins-snapshot 0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 02a4b8785c36843b6b2c7dbc3b003e351c9c655417103f7e8cbcfdfae5169b3d
[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" "02a4b8785c36843b6b2c7dbc3b003e351c9c655417103f7e8cbcfdfae5169b3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02a4b8785c36843b6b2c7dbc3b003e351c9c655417103f7e8cbcfdfae5169b3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02a4b8785c36843b6b2c7dbc3b003e351c9c655417103f7e8cbcfdfae5169b3d", kill_on_drop: false }`
[INFO] [stdout] 02a4b8785c36843b6b2c7dbc3b003e351c9c655417103f7e8cbcfdfae5169b3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b3b0a6d80aa6a8e3bcd7e73b42fdbe38b939345938fd9034db4d6f0c35a8f7f9
[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" "b3b0a6d80aa6a8e3bcd7e73b42fdbe38b939345938fd9034db4d6f0c35a8f7f9", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustc-cfg v0.3.0
[INFO] [stderr]    Compiling compiler-builtins-snapshot v0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'gcc::Config': gcc::Config has been renamed to gcc::Build
[INFO] [stdout]   --> build.rs:66:24
[INFO] [stdout]    |
[INFO] [stdout] 66 |         let cfg = &mut gcc::Config::new();
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'gcc::Build::new': crate has been renamed to `cc`, the `gcc` name is not maintained
[INFO] [stdout]   --> build.rs:66:24
[INFO] [stdout]    |
[INFO] [stdout] 66 |         let cfg = &mut gcc::Config::new();
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | #![feature(asm)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![feature(compiler_builtins)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(core_intrinsics)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | #![feature(naked_functions)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | #![feature(staged_api)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]   --> src/lib.rs:70:1
[INFO] [stdout]    |
[INFO] [stdout] 70 | / macro_rules! srem {
[INFO] [stdout] 71 | |     ($sty:ty, $a:expr, $b:expr) => {
[INFO] [stdout] 72 | |         unsafe {
[INFO] [stdout] 73 | |             let a = $a;
[INFO] [stdout] ...  |
[INFO] [stdout] 82 | |     }
[INFO] [stdout] 83 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:1:31
[INFO] [stdout]    |
[INFO] [stdout] 1  | #![cfg_attr(not(stage0), deny(warnings))]
[INFO] [stdout]    |                               ^^^^^^^^
[INFO] [stdout]    = note: `#[warn(unused_macros)]` implied by `#[warn(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'core::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/int/udiv.rs:112:28
[INFO] [stdout]     |
[INFO] [stdout] 112 |     let mut rem = unsafe { mem::uninitialized() };
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:1:31
[INFO] [stdout]     |
[INFO] [stdout] 1   | #![cfg_attr(not(stage0), deny(warnings))]
[INFO] [stdout]     |                               ^^^^^^^^
[INFO] [stdout]     = note: `#[warn(deprecated)]` implied by `#[warn(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `compiler-builtins-snapshot`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "b3b0a6d80aa6a8e3bcd7e73b42fdbe38b939345938fd9034db4d6f0c35a8f7f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3b0a6d80aa6a8e3bcd7e73b42fdbe38b939345938fd9034db4d6f0c35a8f7f9", kill_on_drop: false }`
[INFO] [stdout] b3b0a6d80aa6a8e3bcd7e73b42fdbe38b939345938fd9034db4d6f0c35a8f7f9