[INFO] fetching crate pauli 0.3.0...
[INFO] checking pauli-0.3.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate pauli 0.3.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate pauli 0.3.0 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pauli 0.3.0
[INFO] finished tweaking crates.io crate pauli 0.3.0
[INFO] tweaked toml for crates.io crate pauli 0.3.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 29 packages
[INFO] [stderr]       Adding approx v0.3.2 (latest: v0.5.1)
[INFO] [stderr]       Adding matrixmultiply v0.2.4 (latest: v0.3.8)
[INFO] [stderr]       Adding ndarray v0.14.0 (latest: v0.15.6)
[INFO] [stderr]       Adding num-complex v0.2.4 (latest: v0.4.5)
[INFO] [stderr]       Adding num-complex v0.3.1 (latest: v0.4.5)
[INFO] [stderr]       Adding sprs v0.9.4 (latest: v0.11.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sprs v0.9.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 16d4251e7db89e9fb0d28d301b26263b3c1d13dcbd571a3312d1277a677a959f
[INFO] running `Command { std: "docker" "start" "-a" "16d4251e7db89e9fb0d28d301b26263b3c1d13dcbd571a3312d1277a677a959f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "16d4251e7db89e9fb0d28d301b26263b3c1d13dcbd571a3312d1277a677a959f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16d4251e7db89e9fb0d28d301b26263b3c1d13dcbd571a3312d1277a677a959f", kill_on_drop: false }`
[INFO] [stdout] 16d4251e7db89e9fb0d28d301b26263b3c1d13dcbd571a3312d1277a677a959f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 72cb15785afc7132a8d5617f7a1e1f3144e9abb4929fc13f46b072ef7ae31de9
[INFO] running `Command { std: "docker" "start" "-a" "72cb15785afc7132a8d5617f7a1e1f3144e9abb4929fc13f46b072ef7ae31de9", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling ndarray v0.14.0
[INFO] [stderr]     Checking matrixmultiply v0.2.4
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking alga v0.9.3
[INFO] [stderr]     Checking sprs v0.9.4
[INFO] [stderr]     Checking pauli v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `X` is imported redundantly
[INFO] [stdout]    --> src/operator.rs:399:17
[INFO] [stdout]     |
[INFO] [stdout] 398 |     use super::*;
[INFO] [stdout]     |         -------- the item `X` is already imported here
[INFO] [stdout] 399 |     use Pauli::{X, Z};
[INFO] [stdout]     |                 ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Z` is imported redundantly
[INFO] [stdout]    --> src/operator.rs:399:20
[INFO] [stdout]     |
[INFO] [stdout] 398 |     use super::*;
[INFO] [stdout]     |         -------- the item `Z` is already imported here
[INFO] [stdout] 399 |     use Pauli::{X, Z};
[INFO] [stdout]     |                    ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.60s
[INFO] running `Command { std: "docker" "inspect" "72cb15785afc7132a8d5617f7a1e1f3144e9abb4929fc13f46b072ef7ae31de9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72cb15785afc7132a8d5617f7a1e1f3144e9abb4929fc13f46b072ef7ae31de9", kill_on_drop: false }`
[INFO] [stdout] 72cb15785afc7132a8d5617f7a1e1f3144e9abb4929fc13f46b072ef7ae31de9