[INFO] fetching crate stack-cell-ref 0.3.0...
[INFO] testing stack-cell-ref-0.3.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate stack-cell-ref 0.3.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate stack-cell-ref 0.3.0
[INFO] finished tweaking crates.io crate stack-cell-ref 0.3.0
[INFO] tweaked toml for crates.io crate stack-cell-ref 0.3.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate stack-cell-ref 0.3.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate stack-cell-ref 0.3.0 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 809f32baaff1b85235ec90d7834a8cb9d121c600c5e7dceb51eeb9b5a2831852
[INFO] running `Command { std: "docker" "start" "-a" "809f32baaff1b85235ec90d7834a8cb9d121c600c5e7dceb51eeb9b5a2831852", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "809f32baaff1b85235ec90d7834a8cb9d121c600c5e7dceb51eeb9b5a2831852", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "809f32baaff1b85235ec90d7834a8cb9d121c600c5e7dceb51eeb9b5a2831852", kill_on_drop: false }`
[INFO] [stdout] 809f32baaff1b85235ec90d7834a8cb9d121c600c5e7dceb51eeb9b5a2831852
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e17904e9ed4480ff6af416ff8f2db078d377d460a6b79072a142f5abdf825e93
[INFO] running `Command { std: "docker" "start" "-a" "e17904e9ed4480ff6af416ff8f2db078d377d460a6b79072a142f5abdf825e93", kill_on_drop: false }`
[INFO] [stderr]    Compiling stack-cell-ref v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Display` and `Octal`
[INFO] [stdout]   --> src/lib.rs:40:24
[INFO] [stdout]    |
[INFO] [stdout] 40 | use core::fmt::{Debug, Display, Formatter, Octal};
[INFO] [stdout]    |                        ^^^^^^^             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "e17904e9ed4480ff6af416ff8f2db078d377d460a6b79072a142f5abdf825e93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e17904e9ed4480ff6af416ff8f2db078d377d460a6b79072a142f5abdf825e93", kill_on_drop: false }`
[INFO] [stdout] e17904e9ed4480ff6af416ff8f2db078d377d460a6b79072a142f5abdf825e93
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b1b7ff1052253a097cf22f29f57cc683dde96c7dba48b313e0b7265ddfaf68b0
[INFO] running `Command { std: "docker" "start" "-a" "b1b7ff1052253a097cf22f29f57cc683dde96c7dba48b313e0b7265ddfaf68b0", kill_on_drop: false }`
[INFO] [stderr]    Compiling stack-cell-ref v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Display` and `Octal`
[INFO] [stdout]   --> src/lib.rs:40:24
[INFO] [stdout]    |
[INFO] [stdout] 40 | use core::fmt::{Debug, Display, Formatter, Octal};
[INFO] [stdout]    |                        ^^^^^^^             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Display` and `Octal`
[INFO] [stdout]   --> src/lib.rs:40:24
[INFO] [stdout]    |
[INFO] [stdout] 40 | use core::fmt::{Debug, Display, Formatter, Octal};
[INFO] [stdout]    |                        ^^^^^^^             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "b1b7ff1052253a097cf22f29f57cc683dde96c7dba48b313e0b7265ddfaf68b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1b7ff1052253a097cf22f29f57cc683dde96c7dba48b313e0b7265ddfaf68b0", kill_on_drop: false }`
[INFO] [stdout] b1b7ff1052253a097cf22f29f57cc683dde96c7dba48b313e0b7265ddfaf68b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 156ab2ecaa8a35d623bffdd807d3b7dc4d851242193f82490fea81e0dc5ddebf
[INFO] running `Command { std: "docker" "start" "-a" "156ab2ecaa8a35d623bffdd807d3b7dc4d851242193f82490fea81e0dc5ddebf", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `Display` and `Octal`
[INFO] [stderr]   --> src/lib.rs:40:24
[INFO] [stderr]    |
[INFO] [stderr] 40 | use core::fmt::{Debug, Display, Formatter, Octal};
[INFO] [stderr]    |                        ^^^^^^^             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `stack-cell-ref` (lib) generated 1 warning (run `cargo fix --lib -p stack-cell-ref` to apply 1 suggestion)
[INFO] [stderr] warning: `stack-cell-ref` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/stack_cell_ref-c7226f7fb5cf02f4)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests stack_cell_ref
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/lib.rs - CellOptionRef<T>::read (line 95) ... ok
[INFO] [stdout] test src/lib.rs - CellOptionRef<T>::with (line 115) ... ok
[INFO] [stdout] test src/lib.rs - CellOptionRef<T>::get_ptr (line 82) ... ok
[INFO] [stdout] test src/lib.rs - (line 4) ... ok
[INFO] [stdout] test src/lib.rs - CellOptionRef<T>::new (line 68) ... ok
[INFO] [stdout] test src/lib.rs - CellOptionRef (line 47) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.67s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "156ab2ecaa8a35d623bffdd807d3b7dc4d851242193f82490fea81e0dc5ddebf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "156ab2ecaa8a35d623bffdd807d3b7dc4d851242193f82490fea81e0dc5ddebf", kill_on_drop: false }`
[INFO] [stdout] 156ab2ecaa8a35d623bffdd807d3b7dc4d851242193f82490fea81e0dc5ddebf