[INFO] cloning repository https://github.com/beauwilliams/rust_web_server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/beauwilliams/rust_web_server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbeauwilliams%2Frust_web_server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbeauwilliams%2Frust_web_server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2c114175586f878a93e3490bc38fba8feebe7efb
[INFO] testing beauwilliams/rust_web_server against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbeauwilliams%2Frust_web_server" "/workspace/builds/worker-28/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-28/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/beauwilliams/rust_web_server on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/beauwilliams/rust_web_server
[INFO] finished tweaking git repo https://github.com/beauwilliams/rust_web_server
[INFO] tweaked toml for git repo https://github.com/beauwilliams/rust_web_server written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] crate git repo https://github.com/beauwilliams/rust_web_server already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded zeroize v1.2.0
[INFO] [stderr]   Downloaded state v0.4.2
[INFO] [stderr]   Downloaded rocket_codegen v0.4.7
[INFO] [stderr]   Downloaded pear_codegen v0.1.4
[INFO] [stderr]   Downloaded pear v0.1.4
[INFO] [stderr]   Downloaded rocket_http v0.4.7
[INFO] [stderr]   Downloaded rocket v0.4.7
[INFO] [stderr]   Downloaded cookie v0.11.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 09d0dcaa9836a2a12130c2dcc09e90cba604443c82932b480cb93aada973429f
[INFO] running `Command { std: "docker" "start" "-a" "09d0dcaa9836a2a12130c2dcc09e90cba604443c82932b480cb93aada973429f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "09d0dcaa9836a2a12130c2dcc09e90cba604443c82932b480cb93aada973429f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09d0dcaa9836a2a12130c2dcc09e90cba604443c82932b480cb93aada973429f", kill_on_drop: false }`
[INFO] [stdout] 09d0dcaa9836a2a12130c2dcc09e90cba604443c82932b480cb93aada973429f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d6d317693d033cae25f50f3415f5f90eae80133c371668f620563a430a7f08d
[INFO] running `Command { std: "docker" "start" "-a" "4d6d317693d033cae25f50f3415f5f90eae80133c371668f620563a430a7f08d", 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]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling byteorder v1.4.2
[INFO] [stderr]    Compiling subtle v2.4.0
[INFO] [stderr]    Compiling subtle v1.0.0
[INFO] [stderr]    Compiling httparse v1.3.5
[INFO] [stderr]    Compiling zeroize v1.2.0
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling tinyvec v1.1.1
[INFO] [stderr]    Compiling pear_codegen v0.1.4
[INFO] [stderr]    Compiling rocket_codegen v0.4.7
[INFO] [stderr]    Compiling rocket v0.4.7
[INFO] [stderr]    Compiling block-cipher-trait v0.6.2
[INFO] [stderr]    Compiling aead v0.2.0
[INFO] [stderr]    Compiling devise_core v0.2.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/devise_core-0.2.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_diagnostic, proc_macro_span)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/devise_core-0.2.0/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(crate_visibility_modifier)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/devise_core-0.2.0/src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(concat_idents)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]    Compiling universal-hash v0.3.0
[INFO] [stderr]    Compiling crypto-mac v0.7.0
[INFO] [stderr]    Compiling aes-soft v0.3.3
[INFO] [stderr]    Compiling hmac v0.7.1
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `devise_core` due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "4d6d317693d033cae25f50f3415f5f90eae80133c371668f620563a430a7f08d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d6d317693d033cae25f50f3415f5f90eae80133c371668f620563a430a7f08d", kill_on_drop: false }`
[INFO] [stdout] 4d6d317693d033cae25f50f3415f5f90eae80133c371668f620563a430a7f08d