[INFO] fetching crate sync-no-std 0.1.5...
[INFO] testing sync-no-std-0.1.5 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-2
[INFO] extracting crate sync-no-std 0.1.5 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate sync-no-std 0.1.5
[INFO] finished tweaking crates.io crate sync-no-std 0.1.5
[INFO] tweaked toml for crates.io crate sync-no-std 0.1.5 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sync-no-std 0.1.5 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate sync-no-std 0.1.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 329be96f8423c6b95a469d0cfcc14125eaba5cc775e1e26a9a2ce759219ffbdd
[INFO] running `Command { std: "docker" "start" "-a" "329be96f8423c6b95a469d0cfcc14125eaba5cc775e1e26a9a2ce759219ffbdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "329be96f8423c6b95a469d0cfcc14125eaba5cc775e1e26a9a2ce759219ffbdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "329be96f8423c6b95a469d0cfcc14125eaba5cc775e1e26a9a2ce759219ffbdd", kill_on_drop: false }`
[INFO] [stdout] 329be96f8423c6b95a469d0cfcc14125eaba5cc775e1e26a9a2ce759219ffbdd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4809d7798ee424406c81b49b8011af9eddf5a3dfd737b7d5f02c49234da91a91
[INFO] running `Command { std: "docker" "start" "-a" "4809d7798ee424406c81b49b8011af9eddf5a3dfd737b7d5f02c49234da91a91", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.178
[INFO] [stderr]    Compiling panicking v0.7.0
[INFO] [stderr]    Compiling sync-no-std v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] error: feature `never_type` is declared but not used
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(never_type)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> src/lib.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![deny(warnings)]
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   = note: `#[deny(unused_features)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sync-no-std` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "4809d7798ee424406c81b49b8011af9eddf5a3dfd737b7d5f02c49234da91a91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4809d7798ee424406c81b49b8011af9eddf5a3dfd737b7d5f02c49234da91a91", kill_on_drop: false }`
[INFO] [stdout] 4809d7798ee424406c81b49b8011af9eddf5a3dfd737b7d5f02c49234da91a91