[INFO] cloning repository https://github.com/narfit66/primes
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/narfit66/primes" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnarfit66%2Fprimes", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnarfit66%2Fprimes'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a798f7c84b8dbc50fb4bc37136ab9c92d72ca8fc
[INFO] testing narfit66/primes against 1.91.0 for beta-1.92-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnarfit66%2Fprimes" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/narfit66/primes
[INFO] finished tweaking git repo https://github.com/narfit66/primes
[INFO] tweaked toml for git repo https://github.com/narfit66/primes written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/narfit66/primes on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/narfit66/primes 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" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7806f19e8032b8887c0e5db5160b4d2f610676fe5ec7092346071e2c826d789f
[INFO] running `Command { std: "docker" "start" "-a" "7806f19e8032b8887c0e5db5160b4d2f610676fe5ec7092346071e2c826d789f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7806f19e8032b8887c0e5db5160b4d2f610676fe5ec7092346071e2c826d789f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7806f19e8032b8887c0e5db5160b4d2f610676fe5ec7092346071e2c826d789f", kill_on_drop: false }`
[INFO] [stdout] 7806f19e8032b8887c0e5db5160b4d2f610676fe5ec7092346071e2c826d789f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f14edd5507e47016ba30c3f692194978108a505d94cd66a9796e5a42e7b0783f
[INFO] running `Command { std: "docker" "start" "-a" "f14edd5507e47016ba30c3f692194978108a505d94cd66a9796e5a42e7b0783f", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustversion v1.0.6
[INFO] [stderr]    Compiling primes v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.38s
[INFO] running `Command { std: "docker" "inspect" "f14edd5507e47016ba30c3f692194978108a505d94cd66a9796e5a42e7b0783f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f14edd5507e47016ba30c3f692194978108a505d94cd66a9796e5a42e7b0783f", kill_on_drop: false }`
[INFO] [stdout] f14edd5507e47016ba30c3f692194978108a505d94cd66a9796e5a42e7b0783f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aab70833aa394a51a9cd5b69a2f9defaf0d1bb5afc3a1a674e28bcd2a4100bd8
[INFO] running `Command { std: "docker" "start" "-a" "aab70833aa394a51a9cd5b69a2f9defaf0d1bb5afc3a1a674e28bcd2a4100bd8", kill_on_drop: false }`
[INFO] [stderr]    Compiling primes v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(test, feature(test))]
[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 `primes` (bin "primes" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "aab70833aa394a51a9cd5b69a2f9defaf0d1bb5afc3a1a674e28bcd2a4100bd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aab70833aa394a51a9cd5b69a2f9defaf0d1bb5afc3a1a674e28bcd2a4100bd8", kill_on_drop: false }`
[INFO] [stdout] aab70833aa394a51a9cd5b69a2f9defaf0d1bb5afc3a1a674e28bcd2a4100bd8