[INFO] cloning repository https://github.com/chucksmash/schaching
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chucksmash/schaching" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchucksmash%2Fschaching", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchucksmash%2Fschaching'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6c28e2e4988413791ad4a4db533bcd360f96553a
[INFO] checking chucksmash/schaching against try#b2f80f6008cdafc35b4472bd46afa16cc6b0cd63 for pr-79470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchucksmash%2Fschaching" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chucksmash/schaching on toolchain b2f80f6008cdafc35b4472bd46afa16cc6b0cd63
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/chucksmash/schaching
[INFO] finished tweaking git repo https://github.com/chucksmash/schaching
[INFO] tweaked toml for git repo https://github.com/chucksmash/schaching written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/chucksmash/schaching already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9eb7ff7b2fd615a020765661863b8b37f40d9f3c66ad0ea85bc45038a4132830
[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" "9eb7ff7b2fd615a020765661863b8b37f40d9f3c66ad0ea85bc45038a4132830", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9eb7ff7b2fd615a020765661863b8b37f40d9f3c66ad0ea85bc45038a4132830", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9eb7ff7b2fd615a020765661863b8b37f40d9f3c66ad0ea85bc45038a4132830", kill_on_drop: false }`
[INFO] [stdout] 9eb7ff7b2fd615a020765661863b8b37f40d9f3c66ad0ea85bc45038a4132830
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ea212c4621f62aeeb312a25e28f3e991691fccc05f53c176203b8a57cc216712
[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" "ea212c4621f62aeeb312a25e28f3e991691fccc05f53c176203b8a57cc216712", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.1.4
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking regex v1.0.2
[INFO] [stderr]     Checking schaching v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `usize` is imported redundantly
[INFO] [stdout]   --> src/main.rs:73:17
[INFO] [stdout]    |
[INFO] [stdout] 12 |     use std::usize;
[INFO] [stdout]    |         ---------- the item `usize` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 73 |             use std::usize;
[INFO] [stdout]    |                 ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `usize` is imported redundantly
[INFO] [stdout]    --> src/main.rs:106:17
[INFO] [stdout]     |
[INFO] [stdout] 12  |     use std::usize;
[INFO] [stdout]     |         ---------- the item `usize` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 106 |             use std::usize;
[INFO] [stdout]     |                 ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `usize` is imported redundantly
[INFO] [stdout]    --> src/main.rs:178:17
[INFO] [stdout]     |
[INFO] [stdout] 12  |     use std::usize;
[INFO] [stdout]     |         ---------- the item `usize` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 178 |             use std::usize;
[INFO] [stdout]     |                 ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `usize` is imported redundantly
[INFO] [stdout]    --> src/main.rs:186:17
[INFO] [stdout]     |
[INFO] [stdout] 12  |     use std::usize;
[INFO] [stdout]     |         ---------- the item `usize` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 186 |             use std::usize;
[INFO] [stdout]     |                 ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `usize` is imported redundantly
[INFO] [stdout]   --> src/main.rs:73:17
[INFO] [stdout]    |
[INFO] [stdout] 12 |     use std::usize;
[INFO] [stdout]    |         ---------- the item `usize` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 73 |             use std::usize;
[INFO] [stdout]    |                 ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `usize` is imported redundantly
[INFO] [stdout]    --> src/main.rs:106:17
[INFO] [stdout]     |
[INFO] [stdout] 12  |     use std::usize;
[INFO] [stdout]     |         ---------- the item `usize` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 106 |             use std::usize;
[INFO] [stdout]     |                 ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `usize` is imported redundantly
[INFO] [stdout]    --> src/main.rs:178:17
[INFO] [stdout]     |
[INFO] [stdout] 12  |     use std::usize;
[INFO] [stdout]     |         ---------- the item `usize` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 178 |             use std::usize;
[INFO] [stdout]     |                 ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `usize` is imported redundantly
[INFO] [stdout]    --> src/main.rs:186:17
[INFO] [stdout]     |
[INFO] [stdout] 12  |     use std::usize;
[INFO] [stdout]     |         ---------- the item `usize` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 186 |             use std::usize;
[INFO] [stdout]     |                 ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Piece` is imported redundantly
[INFO] [stdout]    --> src/main.rs:582:17
[INFO] [stdout]     |
[INFO] [stdout] 577 |         use super::*;
[INFO] [stdout]     |             -------- the item `Piece` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 582 |             use super::super::piece::Piece;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.21s
[INFO] running `Command { std: "docker" "inspect" "ea212c4621f62aeeb312a25e28f3e991691fccc05f53c176203b8a57cc216712", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea212c4621f62aeeb312a25e28f3e991691fccc05f53c176203b8a57cc216712", kill_on_drop: false }`
[INFO] [stdout] ea212c4621f62aeeb312a25e28f3e991691fccc05f53c176203b8a57cc216712