[INFO] fetching crate base100 0.4.1...
[INFO] testing base100-0.4.1 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate base100 0.4.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate base100 0.4.1 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate base100 0.4.1
[INFO] finished tweaking crates.io crate base100 0.4.1
[INFO] tweaked toml for crates.io crate base100 0.4.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded stdsimd v0.0.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c8cbb9cb1d3d4f20f3b3898c963280e142ea97f5a44de1e11719f57d918bfdb5
[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" "c8cbb9cb1d3d4f20f3b3898c963280e142ea97f5a44de1e11719f57d918bfdb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c8cbb9cb1d3d4f20f3b3898c963280e142ea97f5a44de1e11719f57d918bfdb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8cbb9cb1d3d4f20f3b3898c963280e142ea97f5a44de1e11719f57d918bfdb5", kill_on_drop: false }`
[INFO] [stdout] c8cbb9cb1d3d4f20f3b3898c963280e142ea97f5a44de1e11719f57d918bfdb5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 280f24e68b2583bc460ceed9c1d61cd0945fae109f499590dc54f0cad40dcae7
[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" "280f24e68b2583bc460ceed9c1d61cd0945fae109f499590dc54f0cad40dcae7", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling yaml-rust v0.3.5
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling base100 v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:42:24
[INFO] [stdout]    |
[INFO] [stdout] 42 |             })) as Box<BufRead>
[INFO] [stdout]    |                        ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:44:58
[INFO] [stdout]    |
[INFO] [stdout] 44 |             Box::new(BufReader::new(io::stdin())) as Box<BufRead>
[INFO] [stdout]    |                                                          ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.20s
[INFO] running `Command { std: "docker" "inspect" "280f24e68b2583bc460ceed9c1d61cd0945fae109f499590dc54f0cad40dcae7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "280f24e68b2583bc460ceed9c1d61cd0945fae109f499590dc54f0cad40dcae7", kill_on_drop: false }`
[INFO] [stdout] 280f24e68b2583bc460ceed9c1d61cd0945fae109f499590dc54f0cad40dcae7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a7b3d1e5f1f5615f46663c759ebee7c398f410eca1ae059a82b7f289f43b02ed
[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" "a7b3d1e5f1f5615f46663c759ebee7c398f410eca1ae059a82b7f289f43b02ed", kill_on_drop: false }`
[INFO] [stderr]    Compiling base100 v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/main.rs:17:19
[INFO] [stdout]    |
[INFO] [stdout] 17 | #![cfg_attr(test, feature(test))]
[INFO] [stdout]    |                   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:42:24
[INFO] [stdout]    |
[INFO] [stdout] 42 |             })) as Box<BufRead>
[INFO] [stdout]    |                        ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:44:58
[INFO] [stdout]    |
[INFO] [stdout] 44 |             Box::new(BufReader::new(io::stdin())) as Box<BufRead>
[INFO] [stdout]    |                                                          ^^^^^^^ help: use `dyn`: `dyn BufRead`
[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 `base100`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "a7b3d1e5f1f5615f46663c759ebee7c398f410eca1ae059a82b7f289f43b02ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7b3d1e5f1f5615f46663c759ebee7c398f410eca1ae059a82b7f289f43b02ed", kill_on_drop: false }`
[INFO] [stdout] a7b3d1e5f1f5615f46663c759ebee7c398f410eca1ae059a82b7f289f43b02ed