[INFO] fetching crate tentacle 0.4.0-alpha.1...
[INFO] checking tentacle-0.4.0-alpha.1 against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] extracting crate tentacle 0.4.0-alpha.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate tentacle 0.4.0-alpha.1 on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tentacle 0.4.0-alpha.1
[INFO] finished tweaking crates.io crate tentacle 0.4.0-alpha.1
[INFO] tweaked toml for crates.io crate tentacle 0.4.0-alpha.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate tentacle 0.4.0-alpha.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nix v0.13.1
[INFO] [stderr]   Downloaded futures-test v0.3.14
[INFO] [stderr]   Downloaded tokio-yamux v0.3.0
[INFO] [stderr]   Downloaded attohttpc v0.10.1
[INFO] [stderr]   Downloaded systemstat v0.1.7
[INFO] [stderr]   Downloaded tentacle-multiaddr v0.3.0
[INFO] [stderr]   Downloaded tentacle-secio v0.5.0
[INFO] [stderr]   Downloaded xmltree v0.10.3
[INFO] [stderr]   Downloaded igd v0.11.1
[INFO] [stderr]   Downloaded sha-1 v0.9.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 42616c11bdd6fb3a676d634eb756aad48d88e8f93a9739f14e6381706f9137ed
[INFO] running `Command { std: "docker" "start" "-a" "42616c11bdd6fb3a676d634eb756aad48d88e8f93a9739f14e6381706f9137ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "42616c11bdd6fb3a676d634eb756aad48d88e8f93a9739f14e6381706f9137ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42616c11bdd6fb3a676d634eb756aad48d88e8f93a9739f14e6381706f9137ed", kill_on_drop: false }`
[INFO] [stdout] 42616c11bdd6fb3a676d634eb756aad48d88e8f93a9739f14e6381706f9137ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 023949518f7241244dc0330b77c44f1094ad823d1b930d642ced07c2705b1422
[INFO] running `Command { std: "docker" "start" "-a" "023949518f7241244dc0330b77c44f1094ad823d1b930d642ced07c2705b1422", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]     Checking slab v0.4.3
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling radium v0.5.3
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling openssl v0.10.34
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking bs58 v0.3.1
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]    Compiling tentacle-secio v0.5.0
[INFO] [stderr]     Checking faster-hex v0.4.1
[INFO] [stderr]     Checking cpufeatures v0.1.0
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]    Compiling nix v0.13.1
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking bytesize v1.0.1
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking futures-channel v0.3.14
[INFO] [stderr]    Compiling tokio v1.5.0
[INFO] [stderr]    Compiling secp256k1-sys v0.3.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking molecule v0.7.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking ring v0.16.20
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]     Checking bitvec v0.19.5
[INFO] [stderr]    Compiling openssl-sys v0.9.62
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling nom v6.1.2
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking lexical-core v0.7.6
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking sha2 v0.9.4
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking regex v1.5.3
[INFO] [stderr]     Checking secp256k1 v0.19.0
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking tentacle-multiaddr v0.3.0
[INFO] [stderr]     Checking systemstat v0.1.7
[INFO] [stderr]     Checking tokio-util v0.6.6
[INFO] [stderr]    Compiling futures-macro v0.3.14
[INFO] [stderr]    Compiling pin-project-internal v1.0.7
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]     Checking futures-util v0.3.14
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking pin-project v1.0.7
[INFO] [stderr]     Checking futures-executor v0.3.14
[INFO] [stderr]     Checking futures v0.3.14
[INFO] [stderr]     Checking futures-test v0.3.14
[INFO] [stderr]     Checking tokio-yamux v0.3.0
[INFO] [stderr]     Checking tentacle v0.4.0-alpha.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0601]: `main` function not found in crate `simple_using_spawn`
[INFO] [stdout]    --> examples/simple_using_spawn.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout] 1   | / #![cfg(feature = "unstable")]
[INFO] [stdout] 2   | |
[INFO] [stdout] 3   | | /// Implement simple.rs example using `ProtocolSpawn`.
[INFO] [stdout] 4   | | use bytes::Bytes;
[INFO] [stdout] ...   |
[INFO] [stdout] 185 | |     });
[INFO] [stdout] 186 | | }
[INFO] [stdout]     | |_^ consider adding a `main` function to `examples/simple_using_spawn.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 `tentacle`
[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" "023949518f7241244dc0330b77c44f1094ad823d1b930d642ced07c2705b1422", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "023949518f7241244dc0330b77c44f1094ad823d1b930d642ced07c2705b1422", kill_on_drop: false }`
[INFO] [stdout] 023949518f7241244dc0330b77c44f1094ad823d1b930d642ced07c2705b1422