[INFO] fetching crate demonstrate 0.4.5...
[INFO] testing demonstrate-0.4.5 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate demonstrate 0.4.5 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate demonstrate 0.4.5 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 demonstrate 0.4.5
[INFO] finished tweaking crates.io crate demonstrate 0.4.5
[INFO] tweaked toml for crates.io crate demonstrate 0.4.5 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate demonstrate 0.4.5 already has a lockfile, it will not be regenerated
[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 fastrand v1.3.5
[INFO] [stderr]   Downloaded atomic-waker v1.0.0
[INFO] [stderr]   Downloaded cache-padded v1.1.1
[INFO] [stderr]   Downloaded vec-arena v0.5.2
[INFO] [stderr]   Downloaded parking v2.0.0
[INFO] [stderr]   Downloaded kv-log-macro v1.0.7
[INFO] [stderr]   Downloaded blocking v0.5.2
[INFO] [stderr]   Downloaded regex v1.3.9
[INFO] [stderr]   Downloaded multitask v0.2.0
[INFO] [stderr]   Downloaded async-executor v0.1.2
[INFO] [stderr]   Downloaded polling v0.1.9
[INFO] [stderr]   Downloaded stfu8 v0.2.4
[INFO] [stderr]   Downloaded parking v1.0.6
[INFO] [stderr]   Downloaded regex-syntax v0.6.18
[INFO] [stderr]   Downloaded libc v0.2.77
[INFO] [stderr]   Downloaded async-std v1.6.3
[INFO] [stderr]   Downloaded socket2 v0.3.15
[INFO] [stderr]   Downloaded wepoll-sys-stjepang v1.0.6
[INFO] [stderr]   Downloaded async-channel v1.4.2
[INFO] [stderr]   Downloaded futures-lite v0.1.11
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.4.18
[INFO] [stderr]   Downloaded pin-project-lite v0.1.7
[INFO] [stderr]   Downloaded aho-corasick v0.7.13
[INFO] [stderr]   Downloaded waker-fn v1.1.0
[INFO] [stderr]   Downloaded async-io v0.1.11
[INFO] [stderr]   Downloaded async-mutex v1.3.0
[INFO] [stderr]   Downloaded event-listener v2.4.0
[INFO] [stderr]   Downloaded concurrent-queue v1.2.2
[INFO] [stderr]   Downloaded voca_rs v1.12.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] aeadc95b2bd6421e77e9bbf91368107f1da477a52233880380504bda8cb4ce4c
[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" "aeadc95b2bd6421e77e9bbf91368107f1da477a52233880380504bda8cb4ce4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aeadc95b2bd6421e77e9bbf91368107f1da477a52233880380504bda8cb4ce4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aeadc95b2bd6421e77e9bbf91368107f1da477a52233880380504bda8cb4ce4c", kill_on_drop: false }`
[INFO] [stdout] aeadc95b2bd6421e77e9bbf91368107f1da477a52233880380504bda8cb4ce4c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 24032e5754bb6b1f652825138a44147b65f13dff0f5a74c0262619f4f76cb667
[INFO] running `Command { std: "docker" "start" "-a" "24032e5754bb6b1f652825138a44147b65f13dff0f5a74c0262619f4f76cb667", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling syn v1.0.40
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling aho-corasick v0.7.13
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling stfu8 v0.2.4
[INFO] [stderr]    Compiling voca_rs v1.12.0
[INFO] [stderr]    Compiling demonstrate v0.4.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.43s
[INFO] running `Command { std: "docker" "inspect" "24032e5754bb6b1f652825138a44147b65f13dff0f5a74c0262619f4f76cb667", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24032e5754bb6b1f652825138a44147b65f13dff0f5a74c0262619f4f76cb667", kill_on_drop: false }`
[INFO] [stdout] 24032e5754bb6b1f652825138a44147b65f13dff0f5a74c0262619f4f76cb667
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] b0ab31dd761e1cb7c555e8de546774ffcb161bcac7a083e6ae5f8ab8d87d40b1
[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" "b0ab31dd761e1cb7c555e8de546774ffcb161bcac7a083e6ae5f8ab8d87d40b1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling cache-padded v1.1.1
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling futures-core v0.3.5
[INFO] [stderr]    Compiling fastrand v1.3.5
[INFO] [stderr]    Compiling waker-fn v1.1.0
[INFO] [stderr]    Compiling pin-project-lite v0.1.7
[INFO] [stderr]    Compiling futures-io v0.3.5
[INFO] [stderr]    Compiling parking v2.0.0
[INFO] [stderr]    Compiling once_cell v1.4.1
[INFO] [stderr]    Compiling event-listener v2.4.0
[INFO] [stderr]    Compiling vec-arena v0.5.2
[INFO] [stderr]    Compiling async-task v3.0.0
[INFO] [stderr]    Compiling atomic-waker v1.0.0
[INFO] [stderr]    Compiling scoped-tls v1.0.0
[INFO] [stderr]    Compiling parking v1.0.6
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling concurrent-queue v1.2.2
[INFO] [stderr]    Compiling async-mutex v1.3.0
[INFO] [stderr]    Compiling async-attributes v1.1.1
[INFO] [stderr]    Compiling futures-lite v0.1.11
[INFO] [stderr]    Compiling multitask v0.2.0
[INFO] [stderr]    Compiling async-channel v1.4.2
[INFO] [stderr]    Compiling kv-log-macro v1.0.7
[INFO] [stderr]    Compiling blocking v0.5.2
[INFO] [stderr]    Compiling socket2 v0.3.15
[INFO] [stderr]    Compiling polling v0.1.9
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling async-io v0.1.11
[INFO] [stderr]    Compiling async-executor v0.1.2
[INFO] [stderr]    Compiling async-std v1.6.3
[INFO] [stderr]    Compiling demonstrate v0.4.5 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0601]: `main` function not found in crate `full`
[INFO] [stdout]   --> examples/full.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | / use demonstrate::demonstrate;
[INFO] [stdout] 2  | |
[INFO] [stdout] 3  | | fn is_4() -> u8 {
[INFO] [stdout] 4  | |     4
[INFO] [stdout] ...  |
[INFO] [stdout] 40 | |     }
[INFO] [stdout] 41 | | }
[INFO] [stdout]    | |_^ consider adding a `main` function to `examples/full.rs`
[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 E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `demonstrate`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "b0ab31dd761e1cb7c555e8de546774ffcb161bcac7a083e6ae5f8ab8d87d40b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0ab31dd761e1cb7c555e8de546774ffcb161bcac7a083e6ae5f8ab8d87d40b1", kill_on_drop: false }`
[INFO] [stdout] b0ab31dd761e1cb7c555e8de546774ffcb161bcac7a083e6ae5f8ab8d87d40b1