[INFO] cloning repository https://github.com/zymogen/zymogen
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zymogen/zymogen" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzymogen%2Fzymogen", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzymogen%2Fzymogen'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 49c48d33e535ca8e2d6d9488680441ab0ac79515
[INFO] checking zymogen/zymogen against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzymogen%2Fzymogen" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zymogen/zymogen on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zymogen/zymogen
[INFO] finished tweaking git repo https://github.com/zymogen/zymogen
[INFO] tweaked toml for git repo https://github.com/zymogen/zymogen written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/zymogen/zymogen already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 88e5022d3c4f53c2c2b9cb6a8d4e4b2ea4c14ebe06020acea8c7f8c97fc1ca7a
[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" "88e5022d3c4f53c2c2b9cb6a8d4e4b2ea4c14ebe06020acea8c7f8c97fc1ca7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "88e5022d3c4f53c2c2b9cb6a8d4e4b2ea4c14ebe06020acea8c7f8c97fc1ca7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88e5022d3c4f53c2c2b9cb6a8d4e4b2ea4c14ebe06020acea8c7f8c97fc1ca7a", kill_on_drop: false }`
[INFO] [stdout] 88e5022d3c4f53c2c2b9cb6a8d4e4b2ea4c14ebe06020acea8c7f8c97fc1ca7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=forbid" "-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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] adcab8be09b090d8955eecb267482c8edbd1ef73f90f053d9ef33b2ce3618fb9
[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" "adcab8be09b090d8955eecb267482c8edbd1ef73f90f053d9ef33b2ce3618fb9", kill_on_drop: false }`
[INFO] [stderr]     Checking zymogen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `JumpNotEqual`
[INFO] [stdout]   --> src/compiler/ir/bytecode.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     JumpNotEqual(usize),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stdout]    --> src/syntax/lexer/mod.rs:262:14
[INFO] [stdout]     |
[INFO] [stdout] 262 |             .into_iter()
[INFO] [stdout]     |              ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `JumpNotEqual`
[INFO] [stdout]   --> src/compiler/ir/bytecode.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     JumpNotEqual(usize),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.29s
[INFO] running `Command { std: "docker" "inspect" "adcab8be09b090d8955eecb267482c8edbd1ef73f90f053d9ef33b2ce3618fb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adcab8be09b090d8955eecb267482c8edbd1ef73f90f053d9ef33b2ce3618fb9", kill_on_drop: false }`
[INFO] [stdout] adcab8be09b090d8955eecb267482c8edbd1ef73f90f053d9ef33b2ce3618fb9