[INFO] cloning repository https://github.com/gyng/rust-primer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gyng/rust-primer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgyng%2Frust-primer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgyng%2Frust-primer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d70706e2613e5b0c9f728e3da633da21013b9fc7
[INFO] checking gyng/rust-primer against 1.95.0-beta.7 for beta-1.95-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgyng%2Frust-primer" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/gyng/rust-primer
[INFO] finished tweaking git repo https://github.com/gyng/rust-primer
[INFO] tweaked toml for git repo https://github.com/gyng/rust-primer written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/gyng/rust-primer on toolchain 1.95.0-beta.7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0-beta.7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/gyng/rust-primer 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-beta.7" "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 security-framework v2.3.1
[INFO] [stderr]   Downloaded ipnet v2.7.0
[INFO] [stderr]   Downloaded syn v1.0.67
[INFO] [stderr]   Downloaded tokio v1.23.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0-beta.7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 51946813aa6f3d2c4998fe99b5cf7e0851cb4136509efbc5450f2e4ecd13a3b7
[INFO] running `Command { std: "docker" "start" "-a" "51946813aa6f3d2c4998fe99b5cf7e0851cb4136509efbc5450f2e4ecd13a3b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "51946813aa6f3d2c4998fe99b5cf7e0851cb4136509efbc5450f2e4ecd13a3b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51946813aa6f3d2c4998fe99b5cf7e0851cb4136509efbc5450f2e4ecd13a3b7", kill_on_drop: false }`
[INFO] [stdout] 51946813aa6f3d2c4998fe99b5cf7e0851cb4136509efbc5450f2e4ecd13a3b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0-beta.7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a629d22ba792ed8d5475df81a543862be1c64a20b0c6856e7254d3d67a65f30
[INFO] running `Command { std: "docker" "start" "-a" "6a629d22ba792ed8d5475df81a543862be1c64a20b0c6856e7254d3d67a65f30", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.67
[INFO] [stderr]    Compiling parking_lot_core v0.9.5
[INFO] [stderr]     Checking once_cell v1.16.0
[INFO] [stderr]    Compiling cc v1.0.78
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]     Checking bytes v1.3.0
[INFO] [stderr]    Compiling tokio v1.23.0
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking mio v0.8.5
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling futures-task v0.3.25
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]    Compiling futures-util v0.3.25
[INFO] [stderr]     Checking http v0.2.8
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling futures-channel v0.3.25
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking futures-sink v0.3.25
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]    Compiling openssl-sys v0.9.80
[INFO] [stderr]     Checking unicode-bidi v0.3.8
[INFO] [stderr]    Compiling encoding_rs v0.8.31
[INFO] [stderr]     Checking textwrap v0.12.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking os_str_bytes v2.4.0
[INFO] [stderr]    Compiling openssl v0.10.45
[INFO] [stderr]    Compiling native-tls v0.2.11
[INFO] [stderr]     Checking ipnet v2.7.0
[INFO] [stderr]     Checking exercise-libraries v0.1.0 (/opt/rustwide/workdir/07-external-libraries/exercise)
[INFO] [stdout] error: expected one of `!` or `::`, found `:`
[INFO] [stdout]   --> 07-external-libraries/exercise/src/main.rs:21:6
[INFO] [stdout]    |
[INFO] [stdout] 21 | https://docs.serde.rs/serde_json/#parsing-json-as-strongly-typed-data-structures
[INFO] [stdout]    |      ^ expected one of `!` or `::`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercise-libraries` (bin "exercise-libraries" test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "6a629d22ba792ed8d5475df81a543862be1c64a20b0c6856e7254d3d67a65f30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a629d22ba792ed8d5475df81a543862be1c64a20b0c6856e7254d3d67a65f30", kill_on_drop: false }`
[INFO] [stdout] 6a629d22ba792ed8d5475df81a543862be1c64a20b0c6856e7254d3d67a65f30