[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 try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJayThomason%2Fos-tutorial-rs" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JayThomason/os-tutorial-rs on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "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-6/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" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 50155e392501bbf06e563e5e7e9131360a8d980135d0644d32ad3a4570995d15
[INFO] running `Command { std: "docker" "start" "-a" "50155e392501bbf06e563e5e7e9131360a8d980135d0644d32ad3a4570995d15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50155e392501bbf06e563e5e7e9131360a8d980135d0644d32ad3a4570995d15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50155e392501bbf06e563e5e7e9131360a8d980135d0644d32ad3a4570995d15", kill_on_drop: false }`
[INFO] [stdout] 50155e392501bbf06e563e5e7e9131360a8d980135d0644d32ad3a4570995d15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 64fd048a746df228d2bc27c604e5841daea4bb3a9387dd533d8b020166888de9
[INFO] running `Command { std: "docker" "start" "-a" "64fd048a746df228d2bc27c604e5841daea4bb3a9387dd533d8b020166888de9", 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_panics)]` on by default
[INFO] [stdout]    = note: this usage of assert!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: the assert!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 11 -     assert!(nasm_output.status.success(), format!("\n\n{}\n", std::str::from_utf8(&nasm_output.stderr).unwrap()));
[INFO] [stdout] 11 +     assert!(nasm_output.status.success(), "\n\n{}\n", std::str::from_utf8(&nasm_output.stderr).unwrap());
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "64fd048a746df228d2bc27c604e5841daea4bb3a9387dd533d8b020166888de9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64fd048a746df228d2bc27c604e5841daea4bb3a9387dd533d8b020166888de9", kill_on_drop: false }`
[INFO] [stdout] 64fd048a746df228d2bc27c604e5841daea4bb3a9387dd533d8b020166888de9