[INFO] cloning repository https://github.com/ldemouy/nail_engine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ldemouy/nail_engine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fldemouy%2Fnail_engine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fldemouy%2Fnail_engine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 64acc2cef8a6c3244a56ab60ff5f1c8c00a98866
[INFO] checking ldemouy/nail_engine against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fldemouy%2Fnail_engine" "/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/ldemouy/nail_engine on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ldemouy/nail_engine
[INFO] finished tweaking git repo https://github.com/ldemouy/nail_engine
[INFO] tweaked toml for git repo https://github.com/ldemouy/nail_engine written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/ldemouy/nail_engine already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3f3382979814170e0d9f3a68a68c385ac703bb37ba3dc2ce0df1733b48dfe823
[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" "3f3382979814170e0d9f3a68a68c385ac703bb37ba3dc2ce0df1733b48dfe823", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f3382979814170e0d9f3a68a68c385ac703bb37ba3dc2ce0df1733b48dfe823", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f3382979814170e0d9f3a68a68c385ac703bb37ba3dc2ce0df1733b48dfe823", kill_on_drop: false }`
[INFO] [stdout] 3f3382979814170e0d9f3a68a68c385ac703bb37ba3dc2ce0df1733b48dfe823
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 58aa6b9a4223a506a16f79ac4af9e3cb79031f032d9748bbc35cdd77e7af0359
[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" "58aa6b9a4223a506a16f79ac4af9e3cb79031f032d9748bbc35cdd77e7af0359", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling const_fn v0.4.5
[INFO] [stderr]     Checking debug-builders v0.1.0
[INFO] [stderr]    Compiling debugtrace v0.1.0
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]     Checking gimli v0.23.0
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking either v0.1.7
[INFO] [stderr]     Checking rustc-demangle v0.1.18
[INFO] [stderr]     Checking object v0.23.0
[INFO] [stderr]     Checking nail_common v0.1.0 (/opt/rustwide/workdir/nail_common)
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling nail_adventure v0.1.0 (/opt/rustwide/workdir/nail_adventure)
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling dbghelp-sys v0.2.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.37
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking conv v0.3.3
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking crossbeam-queue v0.3.1
[INFO] [stderr]     Checking crossbeam-epoch v0.9.1
[INFO] [stderr]     Checking backtrace v0.1.8
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking rayon-core v1.9.0
[INFO] [stderr]     Checking crossbeam v0.8.0
[INFO] [stderr]     Checking chomp v0.3.1
[INFO] [stderr]     Checking guid-parser v0.1.0
[INFO] [stderr]     Checking addr2line v0.14.1
[INFO] [stderr]     Checking backtrace v0.3.56
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking guid v0.1.0
[INFO] [stderr]     Checking guid-create v0.1.1
[INFO] [stderr]     Checking nail_core v0.1.0 (/opt/rustwide/workdir/nail_core)
[INFO] [stdout] warning: unused variable: `read`
[INFO] [stdout]   --> nail_core/src/engine.rs:85:53
[INFO] [stdout]    |
[INFO] [stdout] 85 | ...                   EngineMessage::Register(read, write) => {
[INFO] [stdout]    |                                               ^^^^ help: if this is intentional, prefix it with an underscore: `_read`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `write`
[INFO] [stdout]   --> nail_core/src/engine.rs:85:59
[INFO] [stdout]    |
[INFO] [stdout] 85 | ...                   EngineMessage::Register(read, write) => {
[INFO] [stdout]    |                                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `guid`
[INFO] [stdout]   --> nail_core/src/engine.rs:88:55
[INFO] [stdout]    |
[INFO] [stdout] 88 | ...                   EngineMessage::DeRegister(guid) => {
[INFO] [stdout]    |                                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_guid`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `read`
[INFO] [stdout]   --> nail_core/src/engine.rs:85:53
[INFO] [stdout]    |
[INFO] [stdout] 85 | ...                   EngineMessage::Register(read, write) => {
[INFO] [stdout]    |                                               ^^^^ help: if this is intentional, prefix it with an underscore: `_read`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `write`
[INFO] [stdout]   --> nail_core/src/engine.rs:85:59
[INFO] [stdout]    |
[INFO] [stdout] 85 | ...                   EngineMessage::Register(read, write) => {
[INFO] [stdout]    |                                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `guid`
[INFO] [stdout]   --> nail_core/src/engine.rs:88:55
[INFO] [stdout]    |
[INFO] [stdout] 88 | ...                   EngineMessage::DeRegister(guid) => {
[INFO] [stdout]    |                                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_guid`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking serde v1.0.125
[INFO] [stderr]     Checking nail_lexer v0.1.0 (/opt/rustwide/workdir/nail_lexer)
[INFO] [stderr]     Checking nail_tui v0.1.0 (/opt/rustwide/workdir/nail_tui)
[INFO] [stdout] warning: unused import: `MappableExit`
[INFO] [stdout]  --> nail_adventure/src/lib.rs:2:31
[INFO] [stdout]   |
[INFO] [stdout] 2 | use nail_tui::{DirectionHint, MappableExit};
[INFO] [stdout]   |                               ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `MappableExit`
[INFO] [stdout]  --> nail_adventure/src/lib.rs:2:31
[INFO] [stdout]   |
[INFO] [stdout] 2 | use nail_tui::{DirectionHint, MappableExit};
[INFO] [stdout]   |                               ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 45.41s
[INFO] running `Command { std: "docker" "inspect" "58aa6b9a4223a506a16f79ac4af9e3cb79031f032d9748bbc35cdd77e7af0359", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58aa6b9a4223a506a16f79ac4af9e3cb79031f032d9748bbc35cdd77e7af0359", kill_on_drop: false }`
[INFO] [stdout] 58aa6b9a4223a506a16f79ac4af9e3cb79031f032d9748bbc35cdd77e7af0359