[INFO] fetching crate stack 0.4.0...
[INFO] testing stack-0.4.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate stack 0.4.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate stack 0.4.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate stack 0.4.0
[INFO] finished tweaking crates.io crate stack 0.4.0
[INFO] tweaked toml for crates.io crate stack 0.4.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 36641e67b2421d1482be6882126ce592acec9e9ca6ccd949c2ab9f0909087631
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "36641e67b2421d1482be6882126ce592acec9e9ca6ccd949c2ab9f0909087631", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "36641e67b2421d1482be6882126ce592acec9e9ca6ccd949c2ab9f0909087631", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36641e67b2421d1482be6882126ce592acec9e9ca6ccd949c2ab9f0909087631", kill_on_drop: false }`
[INFO] [stdout] 36641e67b2421d1482be6882126ce592acec9e9ca6ccd949c2ab9f0909087631
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 054b0952ff5f445ffccca518ddb67b174231c37049c662b2d6f63a83f8ee99d5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "054b0952ff5f445ffccca518ddb67b174231c37049c662b2d6f63a83f8ee99d5", kill_on_drop: false }`
[INFO] [stderr]    Compiling coalesce v0.1.1
[INFO] [stderr]    Compiling stack v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.20s
[INFO] running `Command { std: "docker" "inspect" "054b0952ff5f445ffccca518ddb67b174231c37049c662b2d6f63a83f8ee99d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "054b0952ff5f445ffccca518ddb67b174231c37049c662b2d6f63a83f8ee99d5", kill_on_drop: false }`
[INFO] [stdout] 054b0952ff5f445ffccca518ddb67b174231c37049c662b2d6f63a83f8ee99d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 20a02f770d8d4344b219b13d34d1a35e3e0c0f535f0351fec22911c379e5c9aa
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "20a02f770d8d4344b219b13d34d1a35e3e0c0f535f0351fec22911c379e5c9aa", kill_on_drop: false }`
[INFO] [stderr]    Compiling stack v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.16s
[INFO] running `Command { std: "docker" "inspect" "20a02f770d8d4344b219b13d34d1a35e3e0c0f535f0351fec22911c379e5c9aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20a02f770d8d4344b219b13d34d1a35e3e0c0f535f0351fec22911c379e5c9aa", kill_on_drop: false }`
[INFO] [stdout] 20a02f770d8d4344b219b13d34d1a35e3e0c0f535f0351fec22911c379e5c9aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f1cda3e3be3a1cc81dafd99c62320051580ed8e6ab01afe6c56aa0f42da22c48
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f1cda3e3be3a1cc81dafd99c62320051580ed8e6ab01afe6c56aa0f42da22c48", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/stack-d5e03834d5481633
[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
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/addressable-0443413b906ed8cc
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test addressable ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/array_vec-de7c7afe3c27bc17
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test test_drop ... ok
[INFO] [stdout] test test_extend ... ok
[INFO] [stdout] test test_in_option ... ok
[INFO] [stdout] test test_insert ... ok
[INFO] [stdout] test test_into_inner_1 ... ok
[INFO] [stdout] test test_into_inner_2 ... ok
[INFO] [stdout] test test_into_inner_3 ... ok
[INFO] [stdout] test test_is_send_sync ... ok
[INFO] [stdout] test test_simple ... ok
[INFO] [stdout] test test_iter ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/small_dst-508117ff7a52cbf2
[INFO] [stdout] test test_u16_index ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test ensure_drop ... ok
[INFO] [stdout] test many_instances ... ok
[INFO] [stdout] test closure ... ok
[INFO] [stdout] test spill ... ok
[INFO] [stdout] test undersize ... ok
[INFO] [stdout] test sized ... ok
[INFO] [stdout] test trivial_type ... ok
[INFO] [stdout] test oversize ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/small_vec-bc5771a474947559
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test null_optimization ... ok
[INFO] [stdout] test into_iter ... ok
[INFO] [stdout] test drop_soundness ... ok
[INFO] [stdout] test test_capacity ... ok
[INFO] [stdout] test test_spill ... ok
[INFO] [stdout] test test_double_spill ... ok
[INFO] [stdout] test test_inline ... ok
[INFO] [stdout] test test_truncate ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests stack
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f1cda3e3be3a1cc81dafd99c62320051580ed8e6ab01afe6c56aa0f42da22c48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1cda3e3be3a1cc81dafd99c62320051580ed8e6ab01afe6c56aa0f42da22c48", kill_on_drop: false }`
[INFO] [stdout] f1cda3e3be3a1cc81dafd99c62320051580ed8e6ab01afe6c56aa0f42da22c48