[INFO] fetching crate demonstrate 0.4.1...
[INFO] checking demonstrate-0.4.1 against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] extracting crate demonstrate 0.4.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate demonstrate 0.4.1 on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate demonstrate 0.4.1
[INFO] finished tweaking crates.io crate demonstrate 0.4.1
[INFO] tweaked toml for crates.io crate demonstrate 0.4.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate demonstrate 0.4.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 57c8373067fdd803ec5627789b9dddfa833f979482fb67097fb49e0496c85ae5
[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" "57c8373067fdd803ec5627789b9dddfa833f979482fb67097fb49e0496c85ae5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "57c8373067fdd803ec5627789b9dddfa833f979482fb67097fb49e0496c85ae5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57c8373067fdd803ec5627789b9dddfa833f979482fb67097fb49e0496c85ae5", kill_on_drop: false }`
[INFO] [stdout] 57c8373067fdd803ec5627789b9dddfa833f979482fb67097fb49e0496c85ae5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a6f2da9abce841d84994abd2cd727872915937401d5f88c2eaf8813a0aef4e0
[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" "9a6f2da9abce841d84994abd2cd727872915937401d5f88c2eaf8813a0aef4e0", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling syn v1.0.37
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]     Checking waker-fn v1.0.0
[INFO] [stderr]     Checking event-listener v2.3.0
[INFO] [stderr]     Checking pin-project-lite v0.1.7
[INFO] [stderr]     Checking fastrand v1.3.3
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]     Checking concurrent-queue v1.2.0
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking async-channel v1.4.0
[INFO] [stderr]     Checking futures-lite v0.1.10
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking blocking v0.4.7
[INFO] [stderr]     Checking quote v1.0.7
[INFO] [stderr]     Checking socket2 v0.3.12
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking demonstrate v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling async-attributes v1.1.1
[INFO] [stderr]     Checking pin-project v0.4.23
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking smol v0.1.18
[INFO] [stderr]     Checking async-std v1.6.2
[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" "9a6f2da9abce841d84994abd2cd727872915937401d5f88c2eaf8813a0aef4e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a6f2da9abce841d84994abd2cd727872915937401d5f88c2eaf8813a0aef4e0", kill_on_drop: false }`
[INFO] [stdout] 9a6f2da9abce841d84994abd2cd727872915937401d5f88c2eaf8813a0aef4e0