[INFO] cloning repository https://github.com/fomalhaut88/bigi-ecc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fomalhaut88/bigi-ecc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffomalhaut88%2Fbigi-ecc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffomalhaut88%2Fbigi-ecc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c9e0d2adf470f280e985881ac6c7703ba13e6faf
[INFO] testing fomalhaut88/bigi-ecc against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffomalhaut88%2Fbigi-ecc" "/workspace/builds/worker-52/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-52/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fomalhaut88/bigi-ecc 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/fomalhaut88/bigi-ecc
[INFO] finished tweaking git repo https://github.com/fomalhaut88/bigi-ecc
[INFO] tweaked toml for git repo https://github.com/fomalhaut88/bigi-ecc written to /workspace/builds/worker-52/source/Cargo.toml
[INFO] crate git repo https://github.com/fomalhaut88/bigi-ecc 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]     Updating git repository `https://github.com/fomalhaut88/bigi.git`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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] 7a4583a64ab49cb3964a7dff9237e728cd805e705357f4ce9a7fdcaa6135cb0e
[INFO] running `Command { std: "docker" "start" "-a" "7a4583a64ab49cb3964a7dff9237e728cd805e705357f4ce9a7fdcaa6135cb0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a4583a64ab49cb3964a7dff9237e728cd805e705357f4ce9a7fdcaa6135cb0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a4583a64ab49cb3964a7dff9237e728cd805e705357f4ce9a7fdcaa6135cb0e", kill_on_drop: false }`
[INFO] [stdout] 7a4583a64ab49cb3964a7dff9237e728cd805e705357f4ce9a7fdcaa6135cb0e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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] ea9bb28f69e320142143d2d19adb075810e86064c07cda9af00ec3c184a93cad
[INFO] running `Command { std: "docker" "start" "-a" "ea9bb28f69e320142143d2d19adb075810e86064c07cda9af00ec3c184a93cad", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.107
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling cpufeatures v0.2.1
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling sha2 v0.9.8
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling bigi v1.1.0 (https://github.com/fomalhaut88/bigi.git?tag=v1.1.0#48a11789)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/bigi-ba3dc8b38dddd8a2/48a1178/src/lib.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(test)]
[INFO] [stdout]    |            ^^^^
[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 E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bigi` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "ea9bb28f69e320142143d2d19adb075810e86064c07cda9af00ec3c184a93cad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea9bb28f69e320142143d2d19adb075810e86064c07cda9af00ec3c184a93cad", kill_on_drop: false }`
[INFO] [stdout] ea9bb28f69e320142143d2d19adb075810e86064c07cda9af00ec3c184a93cad