[INFO] fetching crate encryption-macros 0.1.1...
[INFO] checking encryption-macros-0.1.1 against 1.95.0 for pr-155915
[INFO] extracting crate encryption-macros 0.1.1 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate encryption-macros 0.1.1
[INFO] finished tweaking crates.io crate encryption-macros 0.1.1
[INFO] tweaked toml for crates.io crate encryption-macros 0.1.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate encryption-macros 0.1.1 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 crates.io crate encryption-macros 0.1.1 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 litrs v0.2.3
[INFO] [stderr]   Downloaded encryption-macros-encryption v0.1.1
[INFO] [stderr]   Downloaded encryption-macros-utils v0.1.0
[INFO] [stderr]   Downloaded quote v1.0.17
[INFO] [stderr]   Downloaded encryption-macros-key-generation v0.1.0
[INFO] [stderr]   Downloaded libc v0.2.121
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 3834701bd477ac9ddcb8fdf080c93fc2d8dd55973b7947c00f22c8a1e89525ab
[INFO] running `Command { std: "docker" "start" "-a" "3834701bd477ac9ddcb8fdf080c93fc2d8dd55973b7947c00f22c8a1e89525ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3834701bd477ac9ddcb8fdf080c93fc2d8dd55973b7947c00f22c8a1e89525ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3834701bd477ac9ddcb8fdf080c93fc2d8dd55973b7947c00f22c8a1e89525ab", kill_on_drop: false }`
[INFO] [stdout] 3834701bd477ac9ddcb8fdf080c93fc2d8dd55973b7947c00f22c8a1e89525ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] b14fa59382bc196f9132a021e8a5de1ec919b4e5a79d493603a33f97568f0bfa
[INFO] running `Command { std: "docker" "start" "-a" "b14fa59382bc196f9132a021e8a5de1ec919b4e5a79d493603a33f97568f0bfa", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]    Compiling litrs v0.2.3
[INFO] [stderr]    Compiling getrandom v0.2.6
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling encryption-macros-key-generation v0.1.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/encryption-macros-key-generation-0.1.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(if_let_guard)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `if_let_guard` has been stable since `1.95.0` and no longer requires an attribute to enable
[INFO] [stdout]   = help: the feature `let_chains` has been stable since `1.88.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `encryption-macros-key-generation` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "b14fa59382bc196f9132a021e8a5de1ec919b4e5a79d493603a33f97568f0bfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b14fa59382bc196f9132a021e8a5de1ec919b4e5a79d493603a33f97568f0bfa", kill_on_drop: false }`
[INFO] [stdout] b14fa59382bc196f9132a021e8a5de1ec919b4e5a79d493603a33f97568f0bfa