[INFO] cloning repository https://github.com/BenjaminBrienen/secret_code
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BenjaminBrienen/secret_code" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBenjaminBrienen%2Fsecret_code", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBenjaminBrienen%2Fsecret_code'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e4c5400b823b18de2902608f38ddad8f01cd3fae
[INFO] testing BenjaminBrienen/secret_code against master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBenjaminBrienen%2Fsecret_code" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/BenjaminBrienen/secret_code
[INFO] finished tweaking git repo https://github.com/BenjaminBrienen/secret_code
[INFO] tweaked toml for git repo https://github.com/BenjaminBrienen/secret_code written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/BenjaminBrienen/secret_code on toolchain 733b47ea4b1b86216f14ef56e49440c33933f230
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/BenjaminBrienen/secret_code 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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d7df917f39d2b8c8cbdc196dc950ceb7ba7e75b3c3c9a39a33178cd0de15d6e7
[INFO] running `Command { std: "docker" "start" "-a" "d7df917f39d2b8c8cbdc196dc950ceb7ba7e75b3c3c9a39a33178cd0de15d6e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d7df917f39d2b8c8cbdc196dc950ceb7ba7e75b3c3c9a39a33178cd0de15d6e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7df917f39d2b8c8cbdc196dc950ceb7ba7e75b3c3c9a39a33178cd0de15d6e7", kill_on_drop: false }`
[INFO] [stdout] d7df917f39d2b8c8cbdc196dc950ceb7ba7e75b3c3c9a39a33178cd0de15d6e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a35e621e4b263d0718bbf39ff8b07634fa0fe718e7b9d41f694fe6cca82f42fb
[INFO] running `Command { std: "docker" "start" "-a" "a35e621e4b263d0718bbf39ff8b07634fa0fe718e7b9d41f694fe6cca82f42fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling secret_code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `slice_group_by` has been stable since 1.77.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(slice_group_by)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `group_by` found for struct `Vec<u8>` in the current scope
[INFO] [stdout]  --> src/main.rs:6:42
[INFO] [stdout]   |
[INFO] [stdout] 6 |     println!("{}", String::from_utf8(buffer.group_by(|byte, _| byte_to_bit(*byte).is_some()).map(|plaintext_byte| plaintext_byte.iter().filt...
[INFO] [stdout]   |                                             ^^^^^^^^ method not found in `Vec<u8>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `secret_code` (bin "secret_code") due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "a35e621e4b263d0718bbf39ff8b07634fa0fe718e7b9d41f694fe6cca82f42fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a35e621e4b263d0718bbf39ff8b07634fa0fe718e7b9d41f694fe6cca82f42fb", kill_on_drop: false }`
[INFO] [stdout] a35e621e4b263d0718bbf39ff8b07634fa0fe718e7b9d41f694fe6cca82f42fb
