[INFO] cloning repository https://github.com/majorkik/rust-playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/majorkik/rust-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmajorkik%2Frust-playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmajorkik%2Frust-playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f2b79d782cac140229a9c310a14a32b7bb128040
[INFO] checking majorkik/rust-playground against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmajorkik%2Frust-playground" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/majorkik/rust-playground
[INFO] finished tweaking git repo https://github.com/majorkik/rust-playground
[INFO] tweaked toml for git repo https://github.com/majorkik/rust-playground written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/majorkik/rust-playground 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 git repo https://github.com/majorkik/rust-playground 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]  Downloading crates ...
[INFO] [stderr]   Downloaded os_str_bytes v6.1.0
[INFO] [stderr]   Downloaded smallvec v1.8.1
[INFO] [stderr]   Downloaded clap_derive v3.2.7
[INFO] [stderr]   Downloaded openssl-sys v0.9.74
[INFO] [stderr]   Downloaded unicode-normalization v0.1.20
[INFO] [stderr]   Downloaded clap v3.2.7
[INFO] [stderr]   Downloaded hyper v0.14.19
[INFO] [stderr]   Downloaded tokio v1.19.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 272b81afb8373e35f18802c21ed808c336209d9fc12d14aa31143913b616d713
[INFO] running `Command { std: "docker" "start" "-a" "272b81afb8373e35f18802c21ed808c336209d9fc12d14aa31143913b616d713", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "272b81afb8373e35f18802c21ed808c336209d9fc12d14aa31143913b616d713", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "272b81afb8373e35f18802c21ed808c336209d9fc12d14aa31143913b616d713", kill_on_drop: false }`
[INFO] [stdout] 272b81afb8373e35f18802c21ed808c336209d9fc12d14aa31143913b616d713
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 721d13f065da7b1432257c9d4c600a982e75998ba3844a4ab9888db60f81d2d1
[INFO] running `Command { std: "docker" "start" "-a" "721d13f065da7b1432257c9d4c600a982e75998ba3844a4ab9888db60f81d2d1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]     Checking once_cell v1.12.0
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]     Checking smallvec v1.8.1
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking mio v0.8.4
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]     Checking tracing-core v0.1.28
[INFO] [stderr]     Checking hashbrown v0.12.1
[INFO] [stderr]    Compiling openssl v0.10.40
[INFO] [stderr]     Checking http v0.2.8
[INFO] [stderr]    Compiling native-tls v0.2.10
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking httparse v1.7.1
[INFO] [stderr]     Checking unicode-normalization v0.1.20
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]     Checking os_str_bytes v6.1.0
[INFO] [stderr]     Checking parking_lot_core v0.9.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking ipnet v2.5.0
[INFO] [stderr]     Checking playground 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:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![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 `playground` (bin "playground") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "721d13f065da7b1432257c9d4c600a982e75998ba3844a4ab9888db60f81d2d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "721d13f065da7b1432257c9d4c600a982e75998ba3844a4ab9888db60f81d2d1", kill_on_drop: false }`
[INFO] [stdout] 721d13f065da7b1432257c9d4c600a982e75998ba3844a4ab9888db60f81d2d1
