[INFO] fetching crate get_len_base_10_as_usize_macros 0.1.9...
[INFO] testing get_len_base_10_as_usize_macros-0.1.9 against 1.60.0 for beta-1.61-1
[INFO] extracting crate get_len_base_10_as_usize_macros 0.1.9 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate get_len_base_10_as_usize_macros 0.1.9 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 crates.io crate get_len_base_10_as_usize_macros 0.1.9
[INFO] finished tweaking crates.io crate get_len_base_10_as_usize_macros 0.1.9
[INFO] tweaked toml for crates.io crate get_len_base_10_as_usize_macros 0.1.9 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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 midpoint v0.1.5
[INFO] [stderr]   Downloaded max_len_base_10_as_usize v0.1.0
[INFO] [stderr]   Downloaded is_signed_trait v0.1.0
[INFO] [stderr]   Downloaded epsi v0.1.1
[INFO] [stderr]   Downloaded epui v0.1.1
[INFO] [stderr]   Downloaded primitive_promotion v0.1.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 4b8b845aa115ee11669a611fe5df1ca4d3448ee277f79eb8da35be5d0e82c3a9
[INFO] running `Command { std: "docker" "start" "-a" "4b8b845aa115ee11669a611fe5df1ca4d3448ee277f79eb8da35be5d0e82c3a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4b8b845aa115ee11669a611fe5df1ca4d3448ee277f79eb8da35be5d0e82c3a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b8b845aa115ee11669a611fe5df1ca4d3448ee277f79eb8da35be5d0e82c3a9", kill_on_drop: false }`
[INFO] [stdout] 4b8b845aa115ee11669a611fe5df1ca4d3448ee277f79eb8da35be5d0e82c3a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] [stdout] 08c8d4e8b5b63526c26915fb41c621688a35e2b23983ea80dae5ee13d5ed587b
[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" "08c8d4e8b5b63526c26915fb41c621688a35e2b23983ea80dae5ee13d5ed587b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling epui v0.1.1
[INFO] [stderr]    Compiling epsi v0.1.1
[INFO] [stderr]    Compiling primitive_promotion v0.1.4
[INFO] [stderr]    Compiling max_len_base_10_as_usize v0.1.0
[INFO] [stderr]    Compiling is_signed_trait v0.1.0
[INFO] [stderr]    Compiling midpoint v0.1.5
[INFO] [stderr]    Compiling get_len_base_10_as_usize_macros v0.1.9 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.87s
[INFO] running `Command { std: "docker" "inspect" "08c8d4e8b5b63526c26915fb41c621688a35e2b23983ea80dae5ee13d5ed587b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08c8d4e8b5b63526c26915fb41c621688a35e2b23983ea80dae5ee13d5ed587b", kill_on_drop: false }`
[INFO] [stdout] 08c8d4e8b5b63526c26915fb41c621688a35e2b23983ea80dae5ee13d5ed587b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9ff6462150e4c02c80f0fbf43272e8d4dc93cf82ddf43c4761d47c3d189b221d
[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" "9ff6462150e4c02c80f0fbf43272e8d4dc93cf82ddf43c4761d47c3d189b221d", kill_on_drop: false }`
[INFO] [stderr]    Compiling get_len_base_10_as_usize_macros v0.1.9 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     feature(const_trait_impl)
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `get_len_base_10_as_usize_macros` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "9ff6462150e4c02c80f0fbf43272e8d4dc93cf82ddf43c4761d47c3d189b221d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ff6462150e4c02c80f0fbf43272e8d4dc93cf82ddf43c4761d47c3d189b221d", kill_on_drop: false }`
[INFO] [stdout] 9ff6462150e4c02c80f0fbf43272e8d4dc93cf82ddf43c4761d47c3d189b221d