[INFO] cloning repository https://github.com/smolck/nvim-matrix-bot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/smolck/nvim-matrix-bot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsmolck%2Fnvim-matrix-bot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsmolck%2Fnvim-matrix-bot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9789623fdd1333059a92b2453b7e232bca9199c9
[INFO] checking smolck/nvim-matrix-bot against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsmolck%2Fnvim-matrix-bot" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-4-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/smolck/nvim-matrix-bot
[INFO] finished tweaking git repo https://github.com/smolck/nvim-matrix-bot
[INFO] tweaked toml for git repo https://github.com/smolck/nvim-matrix-bot written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/smolck/nvim-matrix-bot on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/smolck/nvim-matrix-bot already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_derive v1.0.201
[INFO] [stderr]   Downloaded lua-patterns v0.4.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.82
[INFO] [stderr]   Downloaded crc32fast v1.3.0
[INFO] [stderr]   Downloaded ureq v2.4.0
[INFO] [stderr]   Downloaded serde v1.0.201
[INFO] [stderr]   Downloaded bumpalo v3.7.1
[INFO] [stderr]   Downloaded pulldown-cmark v0.9.0
[INFO] [stderr]   Downloaded syn v2.0.61
[INFO] [stderr]   Downloaded webpki-roots v0.22.1
[INFO] [stderr]   Downloaded rustls v0.20.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7f87c40748c7290f1ec30e48971664dccbc19be1df649264ea63a8a0c080d687
[INFO] running `Command { std: "docker" "start" "-a" "7f87c40748c7290f1ec30e48971664dccbc19be1df649264ea63a8a0c080d687", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7f87c40748c7290f1ec30e48971664dccbc19be1df649264ea63a8a0c080d687", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f87c40748c7290f1ec30e48971664dccbc19be1df649264ea63a8a0c080d687", kill_on_drop: false }`
[INFO] [stdout] 7f87c40748c7290f1ec30e48971664dccbc19be1df649264ea63a8a0c080d687
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fa24a90fc946f77f5f8a8e72448d5e182f7df2acc0b51fe678b66a1875135ac6
[INFO] running `Command { std: "docker" "start" "-a" "fa24a90fc946f77f5f8a8e72448d5e182f7df2acc0b51fe678b66a1875135ac6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.102
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]    Compiling proc-macro2 v1.0.82
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking tinyvec v1.4.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling crc32fast v1.3.0
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]     Checking unicode-bidi v0.3.6
[INFO] [stderr]    Compiling serde v1.0.201
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]    Compiling serde_json v1.0.73
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]    Compiling pulldown-cmark v0.9.0
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]    Compiling syn v2.0.61
[INFO] [stderr]     Checking bit-set v0.5.2
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]     Checking chunked_transfer v1.4.0
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking lua-patterns v0.4.0
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]    Compiling serde_derive v1.0.201
[INFO] [stderr]     Checking fancy-regex v0.7.1
[INFO] [stderr]     Checking webpki v0.22.0
[INFO] [stderr]     Checking sct v0.7.0
[INFO] [stderr]     Checking webpki-roots v0.22.1
[INFO] [stderr]     Checking rustls v0.20.2
[INFO] [stderr]     Checking ureq v2.4.0
[INFO] [stderr]     Checking nvim-matrix-bot v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_blocks)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_blocks)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nvim-matrix-bot` (bin "nvim-matrix-bot" test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nvim-matrix-bot` (bin "nvim-matrix-bot") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "fa24a90fc946f77f5f8a8e72448d5e182f7df2acc0b51fe678b66a1875135ac6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa24a90fc946f77f5f8a8e72448d5e182f7df2acc0b51fe678b66a1875135ac6", kill_on_drop: false }`
[INFO] [stdout] fa24a90fc946f77f5f8a8e72448d5e182f7df2acc0b51fe678b66a1875135ac6
