[INFO] cloning repository https://github.com/CL4PTP/dbapp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CL4PTP/dbapp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCL4PTP%2Fdbapp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCL4PTP%2Fdbapp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5392056e3362ec767ffb45b20c8b5238388a9116
[INFO] testing CL4PTP/dbapp against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCL4PTP%2Fdbapp" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CL4PTP/dbapp on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/CL4PTP/dbapp
[INFO] finished tweaking git repo https://github.com/CL4PTP/dbapp
[INFO] tweaked toml for git repo https://github.com/CL4PTP/dbapp written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/CL4PTP/dbapp already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] 05e1c3a6b06cd767d374cdedcaf7dd8054944a923218a3884fbacb5e12407d1b
[INFO] running `Command { std: "docker" "start" "-a" "05e1c3a6b06cd767d374cdedcaf7dd8054944a923218a3884fbacb5e12407d1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "05e1c3a6b06cd767d374cdedcaf7dd8054944a923218a3884fbacb5e12407d1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05e1c3a6b06cd767d374cdedcaf7dd8054944a923218a3884fbacb5e12407d1b", kill_on_drop: false }`
[INFO] [stdout] 05e1c3a6b06cd767d374cdedcaf7dd8054944a923218a3884fbacb5e12407d1b
[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=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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b7078da5d4ac6ccb522ed62ccf45cde930733eea1fb67a4fe2e624f53bd1fd9d
[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" "b7078da5d4ac6ccb522ed62ccf45cde930733eea1fb67a4fe2e624f53bd1fd9d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling libc v0.2.44
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.28
[INFO] [stderr]    Compiling cc v1.0.25
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]    Compiling wasm-bindgen v0.2.28
[INFO] [stderr]    Compiling regex v1.0.6
[INFO] [stderr]    Compiling rustc-demangle v0.1.9
[INFO] [stderr]    Compiling unicode-segmentation v1.2.1
[INFO] [stderr]    Compiling sourcefile v0.1.4
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]    Compiling regex-syntax v0.6.3
[INFO] [stderr]    Compiling heck v0.3.0
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling nom v4.1.1
[INFO] [stderr]    Compiling syn v0.15.22
[INFO] [stderr]    Compiling weedle v0.8.0
[INFO] [stderr]    Compiling backtrace v0.3.9
[INFO] [stderr]    Compiling env_logger v0.6.0
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.28
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.28
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.28
[INFO] [stderr]    Compiling failure v0.1.3
[INFO] [stderr]    Compiling wasm-bindgen-webidl v0.2.22
[INFO] [stderr]    Compiling js-sys v0.3.5
[INFO] [stderr]    Compiling console_error_panic_hook v0.1.5
[INFO] [stderr]    Compiling web-sys v0.3.5
[INFO] [stderr]    Compiling dbapp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(self_struct_ctor)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(nll)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(type_ascription)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> src/functional_dependencies.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |         'outer: loop {
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/functional_dependencies.rs:221:9
[INFO] [stdout]     |
[INFO] [stdout] 221 |         'outer: loop {
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 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 `dbapp`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "b7078da5d4ac6ccb522ed62ccf45cde930733eea1fb67a4fe2e624f53bd1fd9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7078da5d4ac6ccb522ed62ccf45cde930733eea1fb67a4fe2e624f53bd1fd9d", kill_on_drop: false }`
[INFO] [stdout] b7078da5d4ac6ccb522ed62ccf45cde930733eea1fb67a4fe2e624f53bd1fd9d