[INFO] updating cached repository https://github.com/ToucheSir/db_tutorial
[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] ae57ceba3427ce2fc15e9270affc1017ba6a19b8
[INFO] checking ToucheSir/db_tutorial against master#bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FToucheSir%2Fdb_tutorial" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ToucheSir/db_tutorial on toolchain bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ToucheSir/db_tutorial
[INFO] finished tweaking git repo https://github.com/ToucheSir/db_tutorial
[INFO] tweaked toml for git repo https://github.com/ToucheSir/db_tutorial written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/ToucheSir/db_tutorial already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "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] e74757338a1f62d92b846924b42bd2ffdc45d913a88e4e37c3b7fe57389b7f34
[INFO] running `"docker" "start" "-a" "e74757338a1f62d92b846924b42bd2ffdc45d913a88e4e37c3b7fe57389b7f34"`
[INFO] [stderr]     Checking serde v1.0.21
[INFO] [stderr]    Compiling serde_derive v1.0.21
[INFO] [stderr]     Checking bincode v0.9.2
[INFO] [stderr]     Checking db_tutorial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `align_of`
[INFO] [stderr]   --> src/main.rs:15:16
[INFO] [stderr]    |
[INFO] [stderr] 15 | use std::mem::{align_of, size_of};
[INFO] [stderr]    |                ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]   --> src/main.rs:90:68
[INFO] [stderr]    |
[INFO] [stderr] 90 |                 let mut array: [Option<Box<Node>>; 100] = unsafe { std::mem::uninitialized() };
[INFO] [stderr]    |                                                                    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `align_of`
[INFO] [stderr]   --> src/main.rs:15:16
[INFO] [stderr]    |
[INFO] [stderr] 15 | use std::mem::{align_of, size_of};
[INFO] [stderr]    |                ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]   --> src/main.rs:90:68
[INFO] [stderr]    |
[INFO] [stderr] 90 |                 let mut array: [Option<Box<Node>>; 100] = unsafe { std::mem::uninitialized() };
[INFO] [stderr]    |                                                                    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:132:25
[INFO] [stderr]     |
[INFO] [stderr] 132 |                     let mut new_page = self.allocate_page(page_num)
[INFO] [stderr]     |                         ----^^^^^^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:148:21
[INFO] [stderr]     |
[INFO] [stderr] 148 |                 let mut new_page = self.allocate_page(page_num)
[INFO] [stderr]     |                     ----^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:132:25
[INFO] [stderr]     |
[INFO] [stderr] 132 |                     let mut new_page = self.allocate_page(page_num)
[INFO] [stderr]     |                         ----^^^^^^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:148:21
[INFO] [stderr]     |
[INFO] [stderr] 148 |                 let mut new_page = self.allocate_page(page_num)
[INFO] [stderr]     |                     ----^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_value`
[INFO] [stderr]   --> src/main.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     fn set_value(&mut self, val: &Row) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `end`
[INFO] [stderr]    --> src/main.rs:241:5
[INFO] [stderr]     |
[INFO] [stderr] 241 |     fn end(&mut self) -> Box<Cursor> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0635]: unknown feature `const_size_of`
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(const_size_of)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0635`.
[INFO] [stderr] error: could not compile `db_tutorial`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: method is never used: `set_value`
[INFO] [stderr]   --> src/main.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     fn set_value(&mut self, val: &Row) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `end`
[INFO] [stderr]    --> src/main.rs:241:5
[INFO] [stderr]     |
[INFO] [stderr] 241 |     fn end(&mut self) -> Box<Cursor> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0635]: unknown feature `const_size_of`
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(const_size_of)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0635`.
[INFO] [stderr] error: could not compile `db_tutorial`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "e74757338a1f62d92b846924b42bd2ffdc45d913a88e4e37c3b7fe57389b7f34"`
[INFO] running `"docker" "rm" "-f" "e74757338a1f62d92b846924b42bd2ffdc45d913a88e4e37c3b7fe57389b7f34"`
[INFO] [stdout] e74757338a1f62d92b846924b42bd2ffdc45d913a88e4e37c3b7fe57389b7f34
