[INFO] cloning repository charliethomson/linkedlrst
[INFO] running `"git" "clone" "--bare" "git://github.com/charliethomson/linkedlrst.git" "work/cache/sources/gh/charliethomson/linkedlrst"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/charliethomson/linkedlrst'...
[INFO] running `"git" "clone" "work/cache/sources/gh/charliethomson/linkedlrst" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/charliethomson/linkedlrst"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/charliethomson/linkedlrst'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/charliethomson/linkedlrst" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/charliethomson/linkedlrst"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/charliethomson/linkedlrst'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] fca5202f305a3f5f86eda6cd49a59257c179bf33
[INFO] sha for GitHub repo charliethomson/linkedlrst: fca5202f305a3f5f86eda6cd49a59257c179bf33
[INFO] validating manifest of charliethomson/linkedlrst on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of charliethomson/linkedlrst on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing charliethomson/linkedlrst
[INFO] finished frobbing charliethomson/linkedlrst
[INFO] frobbed toml for charliethomson/linkedlrst written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/charliethomson/linkedlrst/Cargo.toml
[INFO] started frobbing charliethomson/linkedlrst
[INFO] finished frobbing charliethomson/linkedlrst
[INFO] frobbed toml for charliethomson/linkedlrst written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/charliethomson/linkedlrst/Cargo.toml
[INFO] crate charliethomson/linkedlrst already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking charliethomson/linkedlrst against try#8f81d0bf6baf07b92f1246696722485c4ca0b049 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-3/try#8f81d0bf6baf07b92f1246696722485c4ca0b049:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/charliethomson/linkedlrst:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 0f9b0d67ec800d61171656a2090c608ec006794f4543ef6841b94e993b9f3bf5
[INFO] running `"docker" "start" "-a" "0f9b0d67ec800d61171656a2090c608ec006794f4543ef6841b94e993b9f3bf5"`
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]    Compiling typename_derive v0.1.3
[INFO] [stderr]     Checking typename v0.1.1
[INFO] [stderr]     Checking linkedlist v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `dealloc`
[INFO] [stderr]  --> src/main.rs:3:20
[INFO] [stderr]   |
[INFO] [stderr] 3 |     alloc::{alloc, dealloc, Layout},
[INFO] [stderr]   |                    ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `one`
[INFO] [stderr]   --> src/main.rs:69:13
[INFO] [stderr]    |
[INFO] [stderr] 69 |     let mut one = Node::new(10).with_next(Some(two.ptr));
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_one`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:68:9
[INFO] [stderr]    |
[INFO] [stderr] 68 |     let mut two = Node::new(15);
[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:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |     let mut one = Node::new(10).with_next(Some(two.ptr));
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `dealloc`
[INFO] [stderr]  --> src/main.rs:3:20
[INFO] [stderr]   |
[INFO] [stderr] 3 |     alloc::{alloc, dealloc, Layout},
[INFO] [stderr]   |                    ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `one`
[INFO] [stderr]   --> src/main.rs:69:13
[INFO] [stderr]    |
[INFO] [stderr] 69 |     let mut one = Node::new(10).with_next(Some(two.ptr));
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_one`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:68:9
[INFO] [stderr]    |
[INFO] [stderr] 68 |     let mut two = Node::new(15);
[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:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |     let mut one = Node::new(10).with_next(Some(two.ptr));
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.42s
[INFO] running `"docker" "inspect" "0f9b0d67ec800d61171656a2090c608ec006794f4543ef6841b94e993b9f3bf5"`
[INFO] running `"docker" "rm" "-f" "0f9b0d67ec800d61171656a2090c608ec006794f4543ef6841b94e993b9f3bf5"`
[INFO] [stdout] 0f9b0d67ec800d61171656a2090c608ec006794f4543ef6841b94e993b9f3bf5