[INFO] fetching crate jupyter-kernel 0.1.0...
[INFO] testing jupyter-kernel-0.1.0 against 1.75.0 for beta-1.76-1
[INFO] extracting crate jupyter-kernel 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate jupyter-kernel 0.1.0 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jupyter-kernel 0.1.0
[INFO] finished tweaking crates.io crate jupyter-kernel 0.1.0
[INFO] tweaked toml for crates.io crate jupyter-kernel 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded chan v0.1.23
[INFO] [stderr]   Downloaded serde v0.6.15
[INFO] [stderr]   Downloaded serde_json v0.6.1
[INFO] [stderr]   Downloaded quasi_macros v0.16.0
[INFO] [stderr]   Downloaded zmq v0.7.0
[INFO] [stderr]   Downloaded nom v0.4.0
[INFO] [stderr]   Downloaded serde_macros v0.5.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f3b1b6c6818615d296d8f1239f9a147ca89a30a4d5afd44d02f5a5e15d4bcca4
[INFO] running `Command { std: "docker" "start" "-a" "f3b1b6c6818615d296d8f1239f9a147ca89a30a4d5afd44d02f5a5e15d4bcca4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f3b1b6c6818615d296d8f1239f9a147ca89a30a4d5afd44d02f5a5e15d4bcca4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3b1b6c6818615d296d8f1239f9a147ca89a30a4d5afd44d02f5a5e15d4bcca4", kill_on_drop: false }`
[INFO] [stdout] f3b1b6c6818615d296d8f1239f9a147ca89a30a4d5afd44d02f5a5e15d4bcca4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eebe62eb23348dd5b644444ec630a42dec0fa169d5241c6791391e039ba2f0ab
[INFO] running `Command { std: "docker" "start" "-a" "eebe62eb23348dd5b644444ec630a42dec0fa169d5241c6791391e039ba2f0ab", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.18
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]    Compiling equivalent v1.0.1
[INFO] [stderr]    Compiling hashbrown v0.14.3
[INFO] [stderr]    Compiling either v1.9.0
[INFO] [stderr]    Compiling log v0.4.20
[INFO] [stderr]    Compiling target-lexicon v0.12.13
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling winnow v0.5.32
[INFO] [stderr]    Compiling smallvec v1.11.2
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling serde v1.0.194
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling walkdir v2.4.0
[INFO] [stderr]    Compiling jobserver v0.1.27
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling pkg-config v0.3.28
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling version-compare v0.1.1
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling getrandom v0.2.11
[INFO] [stderr]    Compiling aster v0.22.1
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling powerfmt v0.2.0
[INFO] [stderr]    Compiling serde_codegen v0.7.15
[INFO] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/aster-0.22.1/src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | extern crate syntax;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling deranged v0.3.11
[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-6f17d22bba15001f/aster-0.22.1/src/lib.rs:1:43
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(not(feature = "with-syntex"), feature(rustc_private))]
[INFO] [stdout]   |                                           ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr] error: could not compile `aster` (lib) due to 3 previous errors
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] Some errors have detailed explanations: E0463, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "eebe62eb23348dd5b644444ec630a42dec0fa169d5241c6791391e039ba2f0ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eebe62eb23348dd5b644444ec630a42dec0fa169d5241c6791391e039ba2f0ab", kill_on_drop: false }`
[INFO] [stdout] eebe62eb23348dd5b644444ec630a42dec0fa169d5241c6791391e039ba2f0ab
