[INFO] cloning repository https://github.com/SBTCVM/SBTCVM_Gen_4
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SBTCVM/SBTCVM_Gen_4" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSBTCVM%2FSBTCVM_Gen_4", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSBTCVM%2FSBTCVM_Gen_4'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b9c00d1903fdbabc20767e60311442e367cc9fac
[INFO] testing SBTCVM/SBTCVM_Gen_4 against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSBTCVM%2FSBTCVM_Gen_4" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SBTCVM/SBTCVM_Gen_4 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SBTCVM/SBTCVM_Gen_4
[INFO] finished tweaking git repo https://github.com/SBTCVM/SBTCVM_Gen_4
[INFO] tweaked toml for git repo https://github.com/SBTCVM/SBTCVM_Gen_4 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/SBTCVM/SBTCVM_Gen_4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 512f4f67f281609a0072f66b8c88078795357e7e0b03fa0aca942914a882a570
[INFO] running `Command { std: "docker" "start" "-a" "512f4f67f281609a0072f66b8c88078795357e7e0b03fa0aca942914a882a570", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "512f4f67f281609a0072f66b8c88078795357e7e0b03fa0aca942914a882a570", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "512f4f67f281609a0072f66b8c88078795357e7e0b03fa0aca942914a882a570", kill_on_drop: false }`
[INFO] [stdout] 512f4f67f281609a0072f66b8c88078795357e7e0b03fa0aca942914a882a570
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9385ca2d14f1e9c40a782d424a24dcdfa270e15041b12d2850528502fd1ac1c8
[INFO] running `Command { std: "docker" "start" "-a" "9385ca2d14f1e9c40a782d424a24dcdfa270e15041b12d2850528502fd1ac1c8", kill_on_drop: false }`
[INFO] [stderr]    Compiling radium v0.6.2
[INFO] [stderr]    Compiling wyz v0.2.0
[INFO] [stderr]    Compiling funty v1.1.0
[INFO] [stderr]    Compiling tap v1.0.0
[INFO] [stderr]    Compiling custom_error v1.8.0
[INFO] [stderr]    Compiling bitvec v0.20.1
[INFO] [stderr]    Compiling sbtcvm-balter v0.1.0 (/opt/rustwide/workdir/sbtcvm-balter)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> sbtcvm-balter/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(or_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `or_patterns` has been stable since 1.53.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> sbtcvm-balter/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(destructuring_assignment)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `destructuring_assignment` has been stable since 1.59.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 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 `sbtcvm-balter` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "9385ca2d14f1e9c40a782d424a24dcdfa270e15041b12d2850528502fd1ac1c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9385ca2d14f1e9c40a782d424a24dcdfa270e15041b12d2850528502fd1ac1c8", kill_on_drop: false }`
[INFO] [stdout] 9385ca2d14f1e9c40a782d424a24dcdfa270e15041b12d2850528502fd1ac1c8