[INFO] cloning repository https://github.com/johnedmonds/make-n
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/johnedmonds/make-n" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnedmonds%2Fmake-n", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnedmonds%2Fmake-n'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0a949a64930701e1932e9e513af26410fc18df43
[INFO] testing johnedmonds/make-n against 1.90.0 for beta-1.91-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnedmonds%2Fmake-n" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/johnedmonds/make-n
[INFO] finished tweaking git repo https://github.com/johnedmonds/make-n
[INFO] tweaked toml for git repo https://github.com/johnedmonds/make-n written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/johnedmonds/make-n on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/johnedmonds/make-n 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded gen-iter v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b6fbc3e21cbfcac9d28deee5188516552b63c7885455b90280b1e53da928d783
[INFO] running `Command { std: "docker" "start" "-a" "b6fbc3e21cbfcac9d28deee5188516552b63c7885455b90280b1e53da928d783", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b6fbc3e21cbfcac9d28deee5188516552b63c7885455b90280b1e53da928d783", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6fbc3e21cbfcac9d28deee5188516552b63c7885455b90280b1e53da928d783", kill_on_drop: false }`
[INFO] [stdout] b6fbc3e21cbfcac9d28deee5188516552b63c7885455b90280b1e53da928d783
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4131bfaedfe9ba256f8a2a24d07f345d3646cbe52b622a2e6b982dae5b8fdf72
[INFO] running `Command { std: "docker" "start" "-a" "4131bfaedfe9ba256f8a2a24d07f345d3646cbe52b622a2e6b982dae5b8fdf72", kill_on_drop: false }`
[INFO] [stderr]    Compiling gen-iter v0.2.0
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/gen-iter-0.2.0/src/lib.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | #![feature(generators, generator_trait)]
[INFO] [stdout]    |            ^^^^^^^^^^ feature has been removed
[INFO] [stdout]    |
[INFO] [stdout]    = note: removed in 1.75.0; see <https://github.com/rust-lang/rust/pull/116958> for more information
[INFO] [stdout]    = note: renamed to `coroutines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved imports `std::ops::Generator`, `std::ops::GeneratorState`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/gen-iter-0.2.0/src/lib.rs:36:16
[INFO] [stdout]    |
[INFO] [stdout] 36 | use std::ops::{Generator, GeneratorState};
[INFO] [stdout]    |                ^^^^^^^^^  ^^^^^^^^^^^^^^ no `GeneratorState` in `ops`
[INFO] [stdout]    |                |
[INFO] [stdout]    |                no `Generator` in `ops`
[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/index.crates.io-1949cf8c6b5b557f/gen-iter-0.2.0/src/lib.rs:33:1
[INFO] [stdout]    |
[INFO] [stdout] 33 | #![feature(generators, generator_trait)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `generator_trait`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/gen-iter-0.2.0/src/lib.rs:33:24
[INFO] [stdout]    |
[INFO] [stdout] 33 | #![feature(generators, generator_trait)]
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0554, E0557, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `gen-iter` (lib) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "4131bfaedfe9ba256f8a2a24d07f345d3646cbe52b622a2e6b982dae5b8fdf72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4131bfaedfe9ba256f8a2a24d07f345d3646cbe52b622a2e6b982dae5b8fdf72", kill_on_drop: false }`
[INFO] [stdout] 4131bfaedfe9ba256f8a2a24d07f345d3646cbe52b622a2e6b982dae5b8fdf72