[INFO] fetching crate souper-ir 2.1.0...
[INFO] testing souper-ir-2.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate souper-ir 2.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate souper-ir 2.1.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate souper-ir 2.1.0
[INFO] finished tweaking crates.io crate souper-ir 2.1.0
[INFO] tweaked toml for crates.io crate souper-ir 2.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] aa57a8da7078e7dafe036a3c5df5f0cfb79b3308eb7cb067f34c70927a8f8406
[INFO] running `Command { std: "docker" "start" "-a" "aa57a8da7078e7dafe036a3c5df5f0cfb79b3308eb7cb067f34c70927a8f8406", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aa57a8da7078e7dafe036a3c5df5f0cfb79b3308eb7cb067f34c70927a8f8406", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa57a8da7078e7dafe036a3c5df5f0cfb79b3308eb7cb067f34c70927a8f8406", kill_on_drop: false }`
[INFO] [stdout] aa57a8da7078e7dafe036a3c5df5f0cfb79b3308eb7cb067f34c70927a8f8406
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3471b9fdee66292b10ac86bd6ea6cf90164badfb3d444a4a892cacf6bab0e83d
[INFO] running `Command { std: "docker" "start" "-a" "3471b9fdee66292b10ac86bd6ea6cf90164badfb3d444a4a892cacf6bab0e83d", kill_on_drop: false }`
[INFO] [stderr]    Compiling id-arena v2.2.1
[INFO] [stderr]    Compiling souper-ir v2.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `Command { std: "docker" "inspect" "3471b9fdee66292b10ac86bd6ea6cf90164badfb3d444a4a892cacf6bab0e83d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3471b9fdee66292b10ac86bd6ea6cf90164badfb3d444a4a892cacf6bab0e83d", kill_on_drop: false }`
[INFO] [stdout] 3471b9fdee66292b10ac86bd6ea6cf90164badfb3d444a4a892cacf6bab0e83d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 47df73f49bda4b0f67906ecff241e83aba7ebf9c0f4cb0c91c14eb3189461103
[INFO] running `Command { std: "docker" "start" "-a" "47df73f49bda4b0f67906ecff241e83aba7ebf9c0f4cb0c91c14eb3189461103", kill_on_drop: false }`
[INFO] [stderr]    Compiling souper-ir v2.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `Command { std: "docker" "inspect" "47df73f49bda4b0f67906ecff241e83aba7ebf9c0f4cb0c91c14eb3189461103", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47df73f49bda4b0f67906ecff241e83aba7ebf9c0f4cb0c91c14eb3189461103", kill_on_drop: false }`
[INFO] [stdout] 47df73f49bda4b0f67906ecff241e83aba7ebf9c0f4cb0c91c14eb3189461103
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 71a75316a8af74cef2b619e0a4847d42f6cf46cd58d61bed2a4aeaa6ef74863b
[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" "71a75316a8af74cef2b619e0a4847d42f6cf46cd58d61bed2a4aeaa6ef74863b", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/souper_ir-f7d3aa003ac429a4)
[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 souper-ir
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 21) ... ok
[INFO] [stdout] test src/lib.rs - (line 53) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.59s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "71a75316a8af74cef2b619e0a4847d42f6cf46cd58d61bed2a4aeaa6ef74863b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71a75316a8af74cef2b619e0a4847d42f6cf46cd58d61bed2a4aeaa6ef74863b", kill_on_drop: false }`
[INFO] [stdout] 71a75316a8af74cef2b619e0a4847d42f6cf46cd58d61bed2a4aeaa6ef74863b