[INFO] crate makods 0.3.0 is already in cache
[INFO] testing makods-0.3.0 against beta-2020-07-24 for beta-1.46-1
[INFO] extracting crate makods 0.3.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate makods 0.3.0 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 makods 0.3.0
[INFO] finished tweaking crates.io crate makods 0.3.0
[INFO] tweaked toml for crates.io crate makods 0.3.0 written to /workspace/builds/worker-5/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-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_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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] aad9e0c17e3d7a36bc0e126e4b5712fbc64f98e708250bbbd75c2f56906f8b08
[INFO] running `Command { std: "docker" "start" "-a" "aad9e0c17e3d7a36bc0e126e4b5712fbc64f98e708250bbbd75c2f56906f8b08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aad9e0c17e3d7a36bc0e126e4b5712fbc64f98e708250bbbd75c2f56906f8b08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aad9e0c17e3d7a36bc0e126e4b5712fbc64f98e708250bbbd75c2f56906f8b08", kill_on_drop: false }`
[INFO] [stdout] aad9e0c17e3d7a36bc0e126e4b5712fbc64f98e708250bbbd75c2f56906f8b08
[INFO] running `Command { std: "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=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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5927efb1f3daa2593bda9634c42230b0f2e33586243ad8fd77d604a83a1806c9
[INFO] running `Command { std: "docker" "start" "-a" "5927efb1f3daa2593bda9634c42230b0f2e33586243ad8fd77d604a83a1806c9", kill_on_drop: false }`
[INFO] [stderr]    Compiling makods v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(core_intrinsics, box_syntax, box_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/jostletree.rs:425:3
[INFO] [stdout]     |
[INFO] [stdout] 425 |         try!(write!(f, "JostleTree{{ "));
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/jostletree.rs:427:4
[INFO] [stdout]     |
[INFO] [stdout] 427 |             try!(write!(f, "{}:{} ", b.span, &b.v));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/jostletree.rs:149:68
[INFO] [stdout]     |
[INFO] [stdout] 149 | fn eq_branch<N,T>(v:&Nref<N,T>, other:*const Branch<N,T>)-> bool { (other == unsafe{*warp_bptr_const(v)}) }
[INFO] [stdout]     |                                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stdout]  --> src/jostletree.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::mem::{uninitialized, forget, transmute, transmute_copy, replace};
[INFO] [stdout]   |                ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/jostletree.rs:62:20
[INFO] [stdout]    |
[INFO] [stdout] 62 |         let mut swap:T = uninitialized();
[INFO] [stdout]    |                          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 5 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 `makods`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "5927efb1f3daa2593bda9634c42230b0f2e33586243ad8fd77d604a83a1806c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5927efb1f3daa2593bda9634c42230b0f2e33586243ad8fd77d604a83a1806c9", kill_on_drop: false }`
[INFO] [stdout] 5927efb1f3daa2593bda9634c42230b0f2e33586243ad8fd77d604a83a1806c9