[INFO] cloning repository https://github.com/JayThomason/os-tutorial-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JayThomason/os-tutorial-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJayThomason%2Fos-tutorial-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJayThomason%2Fos-tutorial-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c56691f6b91eaf666a5c3dbe748fc40ac145bde1
[INFO] checking JayThomason/os-tutorial-rs against master#9503ea19edbf01b9435e80e17d60ce1b88390116 for pr-81782
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJayThomason%2Fos-tutorial-rs" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JayThomason/os-tutorial-rs on toolchain 9503ea19edbf01b9435e80e17d60ce1b88390116
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JayThomason/os-tutorial-rs
[INFO] finished tweaking git repo https://github.com/JayThomason/os-tutorial-rs
[INFO] tweaked toml for git repo https://github.com/JayThomason/os-tutorial-rs written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/JayThomason/os-tutorial-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b38feb41f2199255b767b2a85aac486009d71d6898531f9cf50bfe87291c3375
[INFO] running `Command { std: "docker" "start" "-a" "b38feb41f2199255b767b2a85aac486009d71d6898531f9cf50bfe87291c3375", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b38feb41f2199255b767b2a85aac486009d71d6898531f9cf50bfe87291c3375", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b38feb41f2199255b767b2a85aac486009d71d6898531f9cf50bfe87291c3375", kill_on_drop: false }`
[INFO] [stdout] b38feb41f2199255b767b2a85aac486009d71d6898531f9cf50bfe87291c3375
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 594cb6d6e648bbea81f179afc6725a39ba0684b2ed2e93817039b361b8fbdd30
[INFO] running `Command { std: "docker" "start" "-a" "594cb6d6e648bbea81f179afc6725a39ba0684b2ed2e93817039b361b8fbdd30", kill_on_drop: false }`
[INFO] [stderr]    Compiling os-tutorial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> build.rs:11:43
[INFO] [stdout]    |
[INFO] [stdout] 11 |     assert!(nasm_output.status.success(), format!("\n\n{}\n", std::str::from_utf8(&nasm_output.stderr).unwrap()));
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.65s
[INFO] running `Command { std: "docker" "inspect" "594cb6d6e648bbea81f179afc6725a39ba0684b2ed2e93817039b361b8fbdd30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "594cb6d6e648bbea81f179afc6725a39ba0684b2ed2e93817039b361b8fbdd30", kill_on_drop: false }`
[INFO] [stdout] 594cb6d6e648bbea81f179afc6725a39ba0684b2ed2e93817039b361b8fbdd30