[INFO] cloning repository https://github.com/mtfcd/tutorialdb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mtfcd/tutorialdb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmtfcd%2Ftutorialdb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmtfcd%2Ftutorialdb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cf1a6d88c614d90e45116afd8f47a3f97e4fa0cf
[INFO] checking mtfcd/tutorialdb against master#836c31742687ba4e2f857b5b698e1e9e6b67619c for pr-81789
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmtfcd%2Ftutorialdb" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mtfcd/tutorialdb on toolchain 836c31742687ba4e2f857b5b698e1e9e6b67619c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mtfcd/tutorialdb
[INFO] finished tweaking git repo https://github.com/mtfcd/tutorialdb
[INFO] tweaked toml for git repo https://github.com/mtfcd/tutorialdb written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/mtfcd/tutorialdb already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b50778b88863b57a1b97a6840ad95c476049d9880b7040b15e3b8b84408e9fbf
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b50778b88863b57a1b97a6840ad95c476049d9880b7040b15e3b8b84408e9fbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b50778b88863b57a1b97a6840ad95c476049d9880b7040b15e3b8b84408e9fbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b50778b88863b57a1b97a6840ad95c476049d9880b7040b15e3b8b84408e9fbf", kill_on_drop: false }`
[INFO] [stdout] b50778b88863b57a1b97a6840ad95c476049d9880b7040b15e3b8b84408e9fbf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "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] 44b9309369da31dc6e6213f9f3369922b0c8ffde28378931e02cbeed251446f7
[INFO] running `Command { std: "docker" "start" "-a" "44b9309369da31dc6e6213f9f3369922b0c8ffde28378931e02cbeed251446f7", kill_on_drop: false }`
[INFO] [stderr]     Checking tutorialdb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant is never used: `IS_ROOT_OFFSET`
[INFO] [stdout]  --> src/btree.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | const IS_ROOT_OFFSET: usize = NODE_TYPE_SIZE;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PARENT_POINTER_OFFSET`
[INFO] [stdout]   --> src/btree.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | const PARENT_POINTER_OFFSET: usize = IS_ROOT_OFFSET + IS_ROOT_SIZE;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `IS_ROOT_OFFSET`
[INFO] [stdout]  --> src/btree.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | const IS_ROOT_OFFSET: usize = NODE_TYPE_SIZE;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PARENT_POINTER_OFFSET`
[INFO] [stdout]   --> src/btree.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | const PARENT_POINTER_OFFSET: usize = IS_ROOT_OFFSET + IS_ROOT_SIZE;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.01s
[INFO] running `Command { std: "docker" "inspect" "44b9309369da31dc6e6213f9f3369922b0c8ffde28378931e02cbeed251446f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44b9309369da31dc6e6213f9f3369922b0c8ffde28378931e02cbeed251446f7", kill_on_drop: false }`
[INFO] [stdout] 44b9309369da31dc6e6213f9f3369922b0c8ffde28378931e02cbeed251446f7