[INFO] cloning repository https://github.com/shdblowers/tindalos
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shdblowers/tindalos" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshdblowers%2Ftindalos", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshdblowers%2Ftindalos'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8c8c71fbbe1f0aeebf4f077fdfd7a3cf6716a788
[INFO] checking shdblowers/tindalos against try#b0d0ea232bdae12fa8da8491a91ae1db029990ef for pr-84037
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshdblowers%2Ftindalos" "/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/shdblowers/tindalos on toolchain b0d0ea232bdae12fa8da8491a91ae1db029990ef
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/shdblowers/tindalos
[INFO] finished tweaking git repo https://github.com/shdblowers/tindalos
[INFO] tweaked toml for git repo https://github.com/shdblowers/tindalos written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/shdblowers/tindalos already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f00d710e515899ad1d1c2e8427ba48c7d2ec8c62ab629151bd5d8d495ea52a6b
[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" "f00d710e515899ad1d1c2e8427ba48c7d2ec8c62ab629151bd5d8d495ea52a6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f00d710e515899ad1d1c2e8427ba48c7d2ec8c62ab629151bd5d8d495ea52a6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f00d710e515899ad1d1c2e8427ba48c7d2ec8c62ab629151bd5d8d495ea52a6b", kill_on_drop: false }`
[INFO] [stdout] f00d710e515899ad1d1c2e8427ba48c7d2ec8c62ab629151bd5d8d495ea52a6b
[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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f85a455ba1d28b1d5adb00fe3900a2a7f8d6fa93b28a7f4fbbc7fd194930e5b8
[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" "f85a455ba1d28b1d5adb00fe3900a2a7f8d6fa93b28a7f4fbbc7fd194930e5b8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.5
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]     Checking serde v1.0.101
[INFO] [stderr]     Checking toml v0.5.3
[INFO] [stderr]     Checking tindalos v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `tasks_struct`
[INFO] [stdout]   --> src/lib.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut tasks_struct: Tasks = get_tasks();
[INFO] [stdout]    |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tasks_struct`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `task_id`
[INFO] [stdout]   --> src/lib.rs:39:14
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn start(task_id: u32) -> std::io::Result<()> {
[INFO] [stdout]    |              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_task_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut tasks_struct: Tasks = get_tasks();
[INFO] [stdout]    |         ----^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tasks_struct`
[INFO] [stdout]   --> src/lib.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut tasks_struct: Tasks = get_tasks();
[INFO] [stdout]    |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tasks_struct`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `task_id`
[INFO] [stdout]   --> src/lib.rs:39:14
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn start(task_id: u32) -> std::io::Result<()> {
[INFO] [stdout]    |              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_task_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut tasks_struct: Tasks = get_tasks();
[INFO] [stdout]    |         ----^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.34s
[INFO] running `Command { std: "docker" "inspect" "f85a455ba1d28b1d5adb00fe3900a2a7f8d6fa93b28a7f4fbbc7fd194930e5b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f85a455ba1d28b1d5adb00fe3900a2a7f8d6fa93b28a7f4fbbc7fd194930e5b8", kill_on_drop: false }`
[INFO] [stdout] f85a455ba1d28b1d5adb00fe3900a2a7f8d6fa93b28a7f4fbbc7fd194930e5b8