[INFO] cloning repository https://github.com/ppedrot/kravanenn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ppedrot/kravanenn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fppedrot%2Fkravanenn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fppedrot%2Fkravanenn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 61f089e2091d1f0c4eb57b2617532e7bee63508d
[INFO] testing ppedrot/kravanenn against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fppedrot%2Fkravanenn" "/workspace/builds/worker-79/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-79/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ppedrot/kravanenn on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ppedrot/kravanenn
[INFO] finished tweaking git repo https://github.com/ppedrot/kravanenn
[INFO] tweaked toml for git repo https://github.com/ppedrot/kravanenn written to /workspace/builds/worker-79/source/Cargo.toml
[INFO] crate git repo https://github.com/ppedrot/kravanenn already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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 take_mut v0.2.0
[INFO] [stderr]   Downloaded serde_derive_internals v0.17.0
[INFO] [stderr]   Downloaded fixedbitset v0.1.8
[INFO] [stderr]   Downloaded serde v1.0.21
[INFO] [stderr]   Downloaded fuchsia-zircon-sys v0.2.0
[INFO] [stderr]   Downloaded fuchsia-zircon v0.2.1
[INFO] [stderr]   Downloaded num_cpus v0.2.13
[INFO] [stderr]   Downloaded bitflags v1.0.1
[INFO] [stderr]   Downloaded crossbeam v0.3.0
[INFO] [stderr]   Downloaded coco v0.1.1
[INFO] [stderr]   Downloaded rand v0.3.18
[INFO] [stderr]   Downloaded rayon v0.9.0
[INFO] [stderr]   Downloaded either v1.4.0
[INFO] [stderr]   Downloaded rayon-core v1.3.0
[INFO] [stderr]   Downloaded serde_derive v1.0.21
[INFO] [stderr]   Downloaded typed-arena v1.3.0
[INFO] [stderr]   Downloaded smallvec v0.5.0
[INFO] [stderr]   Downloaded lazy-init v0.2.0
[INFO] [stderr]   Downloaded movecell v0.2.0
[INFO] [stderr]   Downloaded light_arena v0.1.1
[INFO] [stderr]   Downloaded serde_derive_state_internals v0.4.0
[INFO] [stderr]   Downloaded serde_derive_state v0.4.1
[INFO] [stderr]   Downloaded serde_state v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 069d2aa4535ec86d2c391284f8553ba54bb6a6f2725135369fea3f7e0048f8b0
[INFO] running `Command { std: "docker" "start" "-a" "069d2aa4535ec86d2c391284f8553ba54bb6a6f2725135369fea3f7e0048f8b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "069d2aa4535ec86d2c391284f8553ba54bb6a6f2725135369fea3f7e0048f8b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "069d2aa4535ec86d2c391284f8553ba54bb6a6f2725135369fea3f7e0048f8b0", kill_on_drop: false }`
[INFO] [stdout] 069d2aa4535ec86d2c391284f8553ba54bb6a6f2725135369fea3f7e0048f8b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 409d63ceba4daf6923abe3595213a8984850a7a30af982335637af29037672df
[INFO] running `Command { std: "docker" "start" "-a" "409d63ceba4daf6923abe3595213a8984850a7a30af982335637af29037672df", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.33
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling rayon-core v1.3.0
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling either v1.4.0
[INFO] [stderr]    Compiling crossbeam v0.3.0
[INFO] [stderr]    Compiling serde v1.0.21
[INFO] [stderr]    Compiling fixedbitset v0.1.8
[INFO] [stderr]    Compiling byteorder v0.5.3
[INFO] [stderr]    Compiling typed-arena v1.3.0
[INFO] [stderr]    Compiling light_arena v0.1.1
[INFO] [stderr]    Compiling lazy-init v0.2.0
[INFO] [stderr]    Compiling movecell v0.2.0
[INFO] [stderr]    Compiling vec_map v0.8.0
[INFO] [stderr]    Compiling take_mut v0.2.0
[INFO] [stderr]    Compiling smallvec v0.5.0
[INFO] [stderr]    Compiling bitflags v1.0.1
[INFO] [stdout] error[E0432]: unresolved imports `std::ops::Placer`, `std::ops::Place`, `std::ops::InPlace`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/light_arena-0.1.1/src/lib.rs:80:16
[INFO] [stdout]    |
[INFO] [stdout] 80 | use std::ops::{Placer, Place, InPlace};
[INFO] [stdout]    |                ^^^^^^  ^^^^^  ^^^^^^^ no `InPlace` in `ops`
[INFO] [stdout]    |                |       |
[INFO] [stdout]    |                |       no `Place` in `ops`
[INFO] [stdout]    |                no `Placer` 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/github.com-1ecc6299db9ec823/light_arena-0.1.1/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(placement_in_syntax, placement_new_protocol)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `light_arena` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "409d63ceba4daf6923abe3595213a8984850a7a30af982335637af29037672df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "409d63ceba4daf6923abe3595213a8984850a7a30af982335637af29037672df", kill_on_drop: false }`
[INFO] [stdout] 409d63ceba4daf6923abe3595213a8984850a7a30af982335637af29037672df