[INFO] cloning repository https://github.com/peterdelevoryas/cu
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/peterdelevoryas/cu" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpeterdelevoryas%2Fcu", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpeterdelevoryas%2Fcu'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 88b2cd5886143d88f0137d03c7b3b4b60dac2f97
[INFO] checking peterdelevoryas/cu against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpeterdelevoryas%2Fcu" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/peterdelevoryas/cu on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/peterdelevoryas/cu
[INFO] finished tweaking git repo https://github.com/peterdelevoryas/cu
[INFO] tweaked toml for git repo https://github.com/peterdelevoryas/cu written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/peterdelevoryas/cu already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a1b14bf1fffb3d48b8c1216d04456a2b2524e6451c720ff4330178281f99680a
[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" "a1b14bf1fffb3d48b8c1216d04456a2b2524e6451c720ff4330178281f99680a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a1b14bf1fffb3d48b8c1216d04456a2b2524e6451c720ff4330178281f99680a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1b14bf1fffb3d48b8c1216d04456a2b2524e6451c720ff4330178281f99680a", kill_on_drop: false }`
[INFO] [stdout] a1b14bf1fffb3d48b8c1216d04456a2b2524e6451c720ff4330178281f99680a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d791bf0c84d8cd09029168d7cd0ff9aa288974394e86c9b6bcd8375553dc8e02
[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" "d791bf0c84d8cd09029168d7cd0ff9aa288974394e86c9b6bcd8375553dc8e02", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.35
[INFO] [stderr]    Compiling llvm-sys v0.1.0 (https://github.com/peterdelevoryas/llvm-sys#154f03d6)
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]     Checking mylang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `elems`
[INFO] [stdout]    --> src/ir.rs:172:36
[INFO] [stdout]     |
[INFO] [stdout] 172 |             syntax::Pattern::Tuple(elems) => unimplemented!(),
[INFO] [stdout]     |                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_elems`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `elems`
[INFO] [stdout]    --> src/ir.rs:173:49
[INFO] [stdout]     |
[INFO] [stdout] 173 |             &syntax::Pattern::EnumVariant(name, ref elems) => {
[INFO] [stdout]     |                                                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_elems`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print`
[INFO] [stdout]     --> src/ir.rs:1157:8
[INFO] [stdout]      |
[INFO] [stdout] 1157 | pub fn print(module: &Module2) {
[INFO] [stdout]      |        ^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking filecheck v0.4.0
[INFO] [stdout] warning: unused variable: `elems`
[INFO] [stdout]    --> src/ir.rs:172:36
[INFO] [stdout]     |
[INFO] [stdout] 172 |             syntax::Pattern::Tuple(elems) => unimplemented!(),
[INFO] [stdout]     |                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_elems`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `elems`
[INFO] [stdout]    --> src/ir.rs:173:49
[INFO] [stdout]     |
[INFO] [stdout] 173 |             &syntax::Pattern::EnumVariant(name, ref elems) => {
[INFO] [stdout]     |                                                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_elems`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print`
[INFO] [stdout]     --> src/ir.rs:1157:8
[INFO] [stdout]      |
[INFO] [stdout] 1157 | pub fn print(module: &Module2) {
[INFO] [stdout]      |        ^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` 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 17.39s
[INFO] running `Command { std: "docker" "inspect" "d791bf0c84d8cd09029168d7cd0ff9aa288974394e86c9b6bcd8375553dc8e02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d791bf0c84d8cd09029168d7cd0ff9aa288974394e86c9b6bcd8375553dc8e02", kill_on_drop: false }`
[INFO] [stdout] d791bf0c84d8cd09029168d7cd0ff9aa288974394e86c9b6bcd8375553dc8e02