[INFO] fetching crate quantpiler 0.1.0...
[INFO] checking quantpiler-0.1.0 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate quantpiler 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate quantpiler 0.1.0
[INFO] finished tweaking crates.io crate quantpiler 0.1.0
[INFO] tweaked toml for crates.io crate quantpiler 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate quantpiler 0.1.0 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate quantpiler 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a7fba5a468dcab0fede29c0c0cb2dd95f54dd8a6ae8767cbefebdfff22a0efe1
[INFO] running `Command { std: "docker" "start" "-a" "a7fba5a468dcab0fede29c0c0cb2dd95f54dd8a6ae8767cbefebdfff22a0efe1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a7fba5a468dcab0fede29c0c0cb2dd95f54dd8a6ae8767cbefebdfff22a0efe1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7fba5a468dcab0fede29c0c0cb2dd95f54dd8a6ae8767cbefebdfff22a0efe1", kill_on_drop: false }`
[INFO] [stdout] a7fba5a468dcab0fede29c0c0cb2dd95f54dd8a6ae8767cbefebdfff22a0efe1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a5d9120bbe69c04d133792f41bccc3ea81aba71f3049640fa0e01fe2228475a5
[INFO] running `Command { std: "docker" "start" "-a" "a5d9120bbe69c04d133792f41bccc3ea81aba71f3049640fa0e01fe2228475a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking itertools v0.11.0
[INFO] [stderr]     Checking num-integer v0.1.45
[INFO] [stderr]     Checking num-complex v0.4.3
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking num v0.4.1
[INFO] [stderr]     Checking quantpiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `controls`
[INFO] [stdout]   --> src/circuit.rs:43:30
[INFO] [stdout]    |
[INFO] [stdout] 43 |             QGate::MultiCX { controls, target } => f.write_fmt(format_args!("mcx CRINGE FIXME")),
[INFO] [stdout]    |                              ^^^^^^^^ help: try ignoring the field: `controls: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `target`
[INFO] [stdout]   --> src/circuit.rs:43:40
[INFO] [stdout]    |
[INFO] [stdout] 43 |             QGate::MultiCX { controls, target } => f.write_fmt(format_args!("mcx CRINGE FIXME")),
[INFO] [stdout]    |                                        ^^^^^^ help: try ignoring the field: `target: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `controls`
[INFO] [stdout]   --> src/circuit.rs:43:30
[INFO] [stdout]    |
[INFO] [stdout] 43 |             QGate::MultiCX { controls, target } => f.write_fmt(format_args!("mcx CRINGE FIXME")),
[INFO] [stdout]    |                              ^^^^^^^^ help: try ignoring the field: `controls: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `target`
[INFO] [stdout]   --> src/circuit.rs:43:40
[INFO] [stdout]    |
[INFO] [stdout] 43 |             QGate::MultiCX { controls, target } => f.write_fmt(format_args!("mcx CRINGE FIXME")),
[INFO] [stdout]    |                                        ^^^^^^ help: try ignoring the field: `target: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]    --> src/circuit.rs:173:27
[INFO] [stdout]     |
[INFO] [stdout] 173 |                 .filter(|(k, v)| v.reg == QubitRegister::Result)
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]    --> src/circuit.rs:173:27
[INFO] [stdout]     |
[INFO] [stdout] 173 |                 .filter(|(k, v)| v.reg == QubitRegister::Result)
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parents`
[INFO] [stdout]    --> src/compiler.rs:150:9
[INFO] [stdout]     |
[INFO] [stdout] 150 |     mut parents: FxHashMap<Rc<Gate>, FxHashSet<Rc<Gate>>>,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parents`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/compiler.rs:150:5
[INFO] [stdout]     |
[INFO] [stdout] 150 |     mut parents: FxHashMap<Rc<Gate>, FxHashSet<Rc<Gate>>>,
[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: unused variable: `parents`
[INFO] [stdout]    --> src/compiler.rs:150:9
[INFO] [stdout]     |
[INFO] [stdout] 150 |     mut parents: FxHashMap<Rc<Gate>, FxHashSet<Rc<Gate>>>,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parents`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/compiler.rs:150:5
[INFO] [stdout]     |
[INFO] [stdout] 150 |     mut parents: FxHashMap<Rc<Gate>, FxHashSet<Rc<Gate>>>,
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.63s
[INFO] running `Command { std: "docker" "inspect" "a5d9120bbe69c04d133792f41bccc3ea81aba71f3049640fa0e01fe2228475a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5d9120bbe69c04d133792f41bccc3ea81aba71f3049640fa0e01fe2228475a5", kill_on_drop: false }`
[INFO] [stdout] a5d9120bbe69c04d133792f41bccc3ea81aba71f3049640fa0e01fe2228475a5