[INFO] cloning repository https://github.com/Nirusu99/practice-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Nirusu99/practice-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNirusu99%2Fpractice-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNirusu99%2Fpractice-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] caab1b9f31d77892a5294a9949d09d34e066776d
[INFO] testing Nirusu99/practice-rs against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNirusu99%2Fpractice-rs" "/workspace/builds/worker-17/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-17/source'...
[INFO] [stderr] done.
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[INFO] validating manifest of git repo https://github.com/Nirusu99/practice-rs on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Nirusu99/practice-rs
[INFO] finished tweaking git repo https://github.com/Nirusu99/practice-rs
[INFO] tweaked toml for git repo https://github.com/Nirusu99/practice-rs written to /workspace/builds/worker-17/source/Cargo.toml
[INFO] crate git repo https://github.com/Nirusu99/practice-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pbr v1.0.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 17bf168a775bcddcbc59faff512c27f3985da4508ada03e08bb1d12ba92b9122
[INFO] running `Command { std: "docker" "start" "-a" "17bf168a775bcddcbc59faff512c27f3985da4508ada03e08bb1d12ba92b9122", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "17bf168a775bcddcbc59faff512c27f3985da4508ada03e08bb1d12ba92b9122", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17bf168a775bcddcbc59faff512c27f3985da4508ada03e08bb1d12ba92b9122", kill_on_drop: false }`
[INFO] [stdout] 17bf168a775bcddcbc59faff512c27f3985da4508ada03e08bb1d12ba92b9122
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ad28530aed44879034a86f2878e187bd84619a643b458658054e6fef49063aa4
[INFO] running `Command { std: "docker" "start" "-a" "ad28530aed44879034a86f2878e187bd84619a643b458658054e6fef49063aa4", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling problem-d v0.1.0 (/opt/rustwide/workdir/problem-d)
[INFO] [stderr]    Compiling problem-c v0.1.0 (/opt/rustwide/workdir/problem-c)
[INFO] [stderr]    Compiling problem-k v0.1.0 (/opt/rustwide/workdir/problem-k)
[INFO] [stderr]    Compiling problem-b v0.1.0 (/opt/rustwide/workdir/problem-b)
[INFO] [stderr]    Compiling uwu-rs v0.1.0 (/opt/rustwide/workdir/uwu-rs)
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling pbr v1.0.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling generate_test v0.1.0 (/opt/rustwide/workdir/generate_test)
[INFO] [stderr]    Compiling analysis-rs v0.1.0 (/opt/rustwide/workdir/analysis-rs)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> analysis-rs/src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(iter_intersperse)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `analysis-rs` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "ad28530aed44879034a86f2878e187bd84619a643b458658054e6fef49063aa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad28530aed44879034a86f2878e187bd84619a643b458658054e6fef49063aa4", kill_on_drop: false }`
[INFO] [stdout] ad28530aed44879034a86f2878e187bd84619a643b458658054e6fef49063aa4