[INFO] fetching crate ref-mut-n 1.0.1...
[INFO] testing ref-mut-n-1.0.1 against 1.90.0 for beta-1.91-3
[INFO] extracting crate ref-mut-n 1.0.1 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate ref-mut-n 1.0.1
[INFO] finished tweaking crates.io crate ref-mut-n 1.0.1
[INFO] tweaked toml for crates.io crate ref-mut-n 1.0.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ref-mut-n 1.0.1 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 ref-mut-n 1.0.1 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quote v1.0.16
[INFO] [stderr]   Downloaded syn v1.0.89
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ee689ca53ba4e32c620481125c214953ae8695237e117d11ec34de9ec55bf4a
[INFO] running `Command { std: "docker" "start" "-a" "2ee689ca53ba4e32c620481125c214953ae8695237e117d11ec34de9ec55bf4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ee689ca53ba4e32c620481125c214953ae8695237e117d11ec34de9ec55bf4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ee689ca53ba4e32c620481125c214953ae8695237e117d11ec34de9ec55bf4a", kill_on_drop: false }`
[INFO] [stdout] 2ee689ca53ba4e32c620481125c214953ae8695237e117d11ec34de9ec55bf4a
[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=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] 57c3abed4c668b018f741dc3726da7b66b9e41fbf692e8f17ef05828f5e8b515
[INFO] running `Command { std: "docker" "start" "-a" "57c3abed4c668b018f741dc3726da7b66b9e41fbf692e8f17ef05828f5e8b515", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling quote v1.0.16
[INFO] [stderr]    Compiling ref-mut-n v1.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.65s
[INFO] running `Command { std: "docker" "inspect" "57c3abed4c668b018f741dc3726da7b66b9e41fbf692e8f17ef05828f5e8b515", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57c3abed4c668b018f741dc3726da7b66b9e41fbf692e8f17ef05828f5e8b515", kill_on_drop: false }`
[INFO] [stdout] 57c3abed4c668b018f741dc3726da7b66b9e41fbf692e8f17ef05828f5e8b515
[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=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] 2e3f2e046166e230443aeba26eee710d26585fe6594d88ae9daeea0c1a8ae351
[INFO] running `Command { std: "docker" "start" "-a" "2e3f2e046166e230443aeba26eee710d26585fe6594d88ae9daeea0c1a8ae351", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]    Compiling quote v1.0.16
[INFO] [stderr]    Compiling ref-mut-n v1.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 6.24s
[INFO] running `Command { std: "docker" "inspect" "2e3f2e046166e230443aeba26eee710d26585fe6594d88ae9daeea0c1a8ae351", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e3f2e046166e230443aeba26eee710d26585fe6594d88ae9daeea0c1a8ae351", kill_on_drop: false }`
[INFO] [stdout] 2e3f2e046166e230443aeba26eee710d26585fe6594d88ae9daeea0c1a8ae351
[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=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] a5a3d5630612d4b8eeeb57f375bcfbfa44cd95585e6d2fd62dc737b1f7f75e69
[INFO] running `Command { std: "docker" "start" "-a" "a5a3d5630612d4b8eeeb57f375bcfbfa44cd95585e6d2fd62dc737b1f7f75e69", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ref_mut_n-87413936218e17a6)
[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 ref_mut_n
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - ref_mut_n (line 27) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.20s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a5a3d5630612d4b8eeeb57f375bcfbfa44cd95585e6d2fd62dc737b1f7f75e69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5a3d5630612d4b8eeeb57f375bcfbfa44cd95585e6d2fd62dc737b1f7f75e69", kill_on_drop: false }`
[INFO] [stdout] a5a3d5630612d4b8eeeb57f375bcfbfa44cd95585e6d2fd62dc737b1f7f75e69