[INFO] cloning repository https://github.com/FredericDesgreniers/snow_automata
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FredericDesgreniers/snow_automata" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFredericDesgreniers%2Fsnow_automata", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFredericDesgreniers%2Fsnow_automata'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d253af88d168375003da781f1808c445ae2eb0d9
[INFO] testing FredericDesgreniers/snow_automata against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFredericDesgreniers%2Fsnow_automata" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/FredericDesgreniers/snow_automata on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/FredericDesgreniers/snow_automata
[INFO] finished tweaking git repo https://github.com/FredericDesgreniers/snow_automata
[INFO] tweaked toml for git repo https://github.com/FredericDesgreniers/snow_automata written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/FredericDesgreniers/snow_automata already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded colored v1.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "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] ef7cbfe7c1d29ee6ea40bcea66ff290d4fe95f16ce06a78f428af1921bb04e39
[INFO] running `Command { std: "docker" "start" "-a" "ef7cbfe7c1d29ee6ea40bcea66ff290d4fe95f16ce06a78f428af1921bb04e39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef7cbfe7c1d29ee6ea40bcea66ff290d4fe95f16ce06a78f428af1921bb04e39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef7cbfe7c1d29ee6ea40bcea66ff290d4fe95f16ce06a78f428af1921bb04e39", kill_on_drop: false }`
[INFO] [stdout] ef7cbfe7c1d29ee6ea40bcea66ff290d4fe95f16ce06a78f428af1921bb04e39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "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] 5e52bb85a59b230e9593193dd79df9e9c84eed592077fb2b662206ac49cb6dc8
[INFO] running `Command { std: "docker" "start" "-a" "5e52bb85a59b230e9593193dd79df9e9c84eed592077fb2b662206ac49cb6dc8", kill_on_drop: false }`
[INFO] [stderr]    Compiling lazy_static v1.0.0
[INFO] [stderr]    Compiling colored v1.6.0
[INFO] [stderr]    Compiling automata_core v0.1.0 (/opt/rustwide/workdir/automata_core)
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]  --> automata_core/src/string_interning.rs:7:44
[INFO] [stdout]   |
[INFO] [stdout] 7 |     static ref GLOBAL_INTERNER: Interner = { Interner::new() };
[INFO] [stdout]   |                                            ^^               ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]   |
[INFO] [stdout] 7 -     static ref GLOBAL_INTERNER: Interner = { Interner::new() };
[INFO] [stdout] 7 +     static ref GLOBAL_INTERNER: Interner = Interner::new();
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]  --> automata_core/src/string_interning.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | / lazy_static! {
[INFO] [stdout] 7 | |     static ref GLOBAL_INTERNER: Interner = { Interner::new() };
[INFO] [stdout] 8 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]   = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling automata v0.1.0 (/opt/rustwide/workdir/automata)
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> automata/src/lib.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | / lazy_static! {
[INFO] [stdout] 19 | |     static ref KEYWORD_SELF: InternedString = {
[INFO] [stdout] 20 | |         return intern("Self");
[INFO] [stdout] 21 | |     };
[INFO] [stdout] 22 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> automata/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(entry_or_default)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `entry_or_default` has been stable since 1.28.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> automata/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(entry_or_default)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 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 `automata` due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "5e52bb85a59b230e9593193dd79df9e9c84eed592077fb2b662206ac49cb6dc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e52bb85a59b230e9593193dd79df9e9c84eed592077fb2b662206ac49cb6dc8", kill_on_drop: false }`
[INFO] [stdout] 5e52bb85a59b230e9593193dd79df9e9c84eed592077fb2b662206ac49cb6dc8