[INFO] fetching crate stack_list 0.1.0...
[INFO] testing stack_list-0.1.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate stack_list 0.1.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate stack_list 0.1.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate stack_list 0.1.0
[INFO] finished tweaking crates.io crate stack_list 0.1.0
[INFO] tweaked toml for crates.io crate stack_list 0.1.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate stack_list 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 997f444fa8263f1c85d78ca369e871afed9a10b9c9bdfb29e24246e1da91a86a
[INFO] running `Command { std: "docker" "start" "-a" "997f444fa8263f1c85d78ca369e871afed9a10b9c9bdfb29e24246e1da91a86a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "997f444fa8263f1c85d78ca369e871afed9a10b9c9bdfb29e24246e1da91a86a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "997f444fa8263f1c85d78ca369e871afed9a10b9c9bdfb29e24246e1da91a86a", kill_on_drop: false }`
[INFO] [stdout] 997f444fa8263f1c85d78ca369e871afed9a10b9c9bdfb29e24246e1da91a86a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 092aa7c09e2430ca9e60bc85999331e4cce308586a079a1086e0725b18ee4ba8
[INFO] running `Command { std: "docker" "start" "-a" "092aa7c09e2430ca9e60bc85999331e4cce308586a079a1086e0725b18ee4ba8", kill_on_drop: false }`
[INFO] [stderr]    Compiling stack_list v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "092aa7c09e2430ca9e60bc85999331e4cce308586a079a1086e0725b18ee4ba8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "092aa7c09e2430ca9e60bc85999331e4cce308586a079a1086e0725b18ee4ba8", kill_on_drop: false }`
[INFO] [stdout] 092aa7c09e2430ca9e60bc85999331e4cce308586a079a1086e0725b18ee4ba8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 965bce184fd22349b8e0f041bebf46acdea4ce89db0aad32c673c4f7d0ef4fbf
[INFO] running `Command { std: "docker" "start" "-a" "965bce184fd22349b8e0f041bebf46acdea4ce89db0aad32c673c4f7d0ef4fbf", kill_on_drop: false }`
[INFO] [stderr]    Compiling stack_list v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "965bce184fd22349b8e0f041bebf46acdea4ce89db0aad32c673c4f7d0ef4fbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "965bce184fd22349b8e0f041bebf46acdea4ce89db0aad32c673c4f7d0ef4fbf", kill_on_drop: false }`
[INFO] [stdout] 965bce184fd22349b8e0f041bebf46acdea4ce89db0aad32c673c4f7d0ef4fbf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a18691429c7bf8d5ae27573d12e95e743e7d443c4e1fa4f87806dd5be3ef83e3
[INFO] running `Command { std: "docker" "start" "-a" "a18691429c7bf8d5ae27573d12e95e743e7d443c4e1fa4f87806dd5be3ef83e3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/stack_list-f0f1b061985c51dc)
[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_list
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/lib.rs - Node::fold (line 154) ... ignored
[INFO] [stdout] test src/lib.rs - Node::prepend_all (line 223) ... ok
[INFO] [stdout] test src/lib.rs - make (line 40) ... ok
[INFO] [stdout] test src/lib.rs - Node::prepend_all_rev (line 199) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.26s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a18691429c7bf8d5ae27573d12e95e743e7d443c4e1fa4f87806dd5be3ef83e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a18691429c7bf8d5ae27573d12e95e743e7d443c4e1fa4f87806dd5be3ef83e3", kill_on_drop: false }`
[INFO] [stdout] a18691429c7bf8d5ae27573d12e95e743e7d443c4e1fa4f87806dd5be3ef83e3