[INFO] updating cached repository https://github.com/johnterickson/rustdb
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5771d3c5cb74b2d5a826d1557ba5055c921c3442
[INFO] checking johnterickson/rustdb against try#8a749131e7beb72f6edacefd2bdcbed3d67b2112 for pr-72331
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnterickson%2Frustdb" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/johnterickson/rustdb on toolchain 8a749131e7beb72f6edacefd2bdcbed3d67b2112
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a749131e7beb72f6edacefd2bdcbed3d67b2112" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/johnterickson/rustdb
[INFO] finished tweaking git repo https://github.com/johnterickson/rustdb
[INFO] tweaked toml for git repo https://github.com/johnterickson/rustdb written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/johnterickson/rustdb already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a749131e7beb72f6edacefd2bdcbed3d67b2112" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+8a749131e7beb72f6edacefd2bdcbed3d67b2112" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 296933ace33070000ee1f5abefc0c39bc5c4508e61cceb6296e78157702afdf2
[INFO] running `"docker" "start" "-a" "296933ace33070000ee1f5abefc0c39bc5c4508e61cceb6296e78157702afdf2"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking smallvec v1.2.0
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking owning_ref v0.4.1
[INFO] [stderr]     Checking lock_api v0.3.3
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking parking_lot_core v0.7.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking parking_lot v0.10.0
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking jdb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `owning_ref::StableAddress`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use owning_ref::StableAddress;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `OwningHandle`
[INFO] [stderr]  --> src/main.rs:5:30
[INFO] [stderr]   |
[INFO] [stderr] 5 | use owning_ref::{OwningRef,  OwningHandle, OwningRefMut};
[INFO] [stderr]   |                              ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `owning_ref::StableAddress`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use owning_ref::StableAddress;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `OwningHandle`
[INFO] [stderr]  --> src/main.rs:5:30
[INFO] [stderr]   |
[INFO] [stderr] 5 | use owning_ref::{OwningRef,  OwningHandle, OwningRefMut};
[INFO] [stderr]   |                              ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `lock_api::RawRwLockUpgrade`
[INFO] [stderr]   --> src/main.rs:14:19
[INFO] [stderr]    |
[INFO] [stderr] 14 | use parking_lot::{lock_api::RawRwLockUpgrade};
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `as_leaf`
[INFO] [stderr]    --> src/main.rs:348:8
[INFO] [stderr]     |
[INFO] [stderr] 348 |     fn as_leaf(&self) -> &LeafNode {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `print_tree`
[INFO] [stderr]    --> src/main.rs:946:8
[INFO] [stderr]     |
[INFO] [stderr] 946 |     fn print_tree<W: Write, T: ReadGuard<TableImpl>>(table: &T, output: &mut W, page_num: PageNumber, indent: usize) -> TableResult<()> {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:953:21
[INFO] [stderr]     |
[INFO] [stderr] 953 |                     Table::print_tree(table, output, child.child, indent+1);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `lock_api::RawRwLockUpgrade`
[INFO] [stderr]   --> src/main.rs:14:19
[INFO] [stderr]    |
[INFO] [stderr] 14 | use parking_lot::{lock_api::RawRwLockUpgrade};
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `as_leaf`
[INFO] [stderr]    --> src/main.rs:348:8
[INFO] [stderr]     |
[INFO] [stderr] 348 |     fn as_leaf(&self) -> &LeafNode {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `print_tree`
[INFO] [stderr]    --> src/main.rs:946:8
[INFO] [stderr]     |
[INFO] [stderr] 946 |     fn print_tree<W: Write, T: ReadGuard<TableImpl>>(table: &T, output: &mut W, page_num: PageNumber, indent: usize) -> TableResult<()> {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:953:21
[INFO] [stderr]     |
[INFO] [stderr] 953 |                     Table::print_tree(table, output, child.child, indent+1);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.12s
[INFO] running `"docker" "inspect" "296933ace33070000ee1f5abefc0c39bc5c4508e61cceb6296e78157702afdf2"`
[INFO] running `"docker" "rm" "-f" "296933ace33070000ee1f5abefc0c39bc5c4508e61cceb6296e78157702afdf2"`
[INFO] [stdout] 296933ace33070000ee1f5abefc0c39bc5c4508e61cceb6296e78157702afdf2