[INFO] cloning repository https://github.com/jonfast565/SimpleScheduler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jonfast565/SimpleScheduler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonfast565%2FSimpleScheduler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonfast565%2FSimpleScheduler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 509e978583d306b008355fef148fdcbb15d6ae73
[INFO] testing jonfast565/SimpleScheduler against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonfast565%2FSimpleScheduler" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jonfast565/SimpleScheduler 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/jonfast565/SimpleScheduler
[INFO] finished tweaking git repo https://github.com/jonfast565/SimpleScheduler
[INFO] tweaked toml for git repo https://github.com/jonfast565/SimpleScheduler written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/jonfast565/SimpleScheduler 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 343f9354c1a1f0211217af180ae2c06f36daaa4066c64dbfdd22c00de19b82db
[INFO] running `Command { std: "docker" "start" "-a" "343f9354c1a1f0211217af180ae2c06f36daaa4066c64dbfdd22c00de19b82db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "343f9354c1a1f0211217af180ae2c06f36daaa4066c64dbfdd22c00de19b82db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "343f9354c1a1f0211217af180ae2c06f36daaa4066c64dbfdd22c00de19b82db", kill_on_drop: false }`
[INFO] [stdout] 343f9354c1a1f0211217af180ae2c06f36daaa4066c64dbfdd22c00de19b82db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] cf4c95619e4ab8cb570f799c06ed024518ceb2bc3fad0b5fc28562a29f5730e8
[INFO] running `Command { std: "docker" "start" "-a" "cf4c95619e4ab8cb570f799c06ed024518ceb2bc3fad0b5fc28562a29f5730e8", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.90
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling itoa v0.4.3
[INFO] [stderr]    Compiling serde_json v1.0.39
[INFO] [stderr]    Compiling simple_scheduler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0603]: crate `serde` is private
[INFO] [stdout]    --> src/jobs.rs:1:17
[INFO] [stdout]     |
[INFO] [stdout] 1   | use serde_json::serde::{Deserialize, Serialize};
[INFO] [stdout]     |                 ^^^^^ private crate
[INFO] [stdout]     |
[INFO] [stdout] note: the crate `serde` is defined here
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_json-1.0.39/src/lib.rs:323:1
[INFO] [stdout]     |
[INFO] [stdout] 323 | extern crate serde;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json::Result`
[INFO] [stdout]  --> src/jobs.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde_json::Result;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0603`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `simple_scheduler` due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "cf4c95619e4ab8cb570f799c06ed024518ceb2bc3fad0b5fc28562a29f5730e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf4c95619e4ab8cb570f799c06ed024518ceb2bc3fad0b5fc28562a29f5730e8", kill_on_drop: false }`
[INFO] [stdout] cf4c95619e4ab8cb570f799c06ed024518ceb2bc3fad0b5fc28562a29f5730e8