[INFO] fetching crate aflak_primitives 0.0.3...
[INFO] checking aflak_primitives-0.0.3 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate aflak_primitives 0.0.3 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate aflak_primitives 0.0.3 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate aflak_primitives 0.0.3
[INFO] finished tweaking crates.io crate aflak_primitives 0.0.3
[INFO] tweaked toml for crates.io crate aflak_primitives 0.0.3 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 33 packages
[INFO] [stderr]       Adding cfg-if v0.1.10 (latest: v1.0.0)
[INFO] [stderr]       Adding fitrs v0.2.6 (latest: v0.5.0)
[INFO] [stderr]       Adding itertools v0.7.11 (latest: v0.12.1)
[INFO] [stderr]       Adding matrixmultiply v0.1.15 (latest: v0.3.8)
[INFO] [stderr]       Adding ndarray v0.11.2 (latest: v0.15.6)
[INFO] [stderr]       Adding num-complex v0.1.43 (latest: v0.4.5)
[INFO] [stderr]       Adding num-traits v0.1.43 (latest: v0.2.18)
[INFO] [stderr]       Adding proc-macro2 v0.2.3 (latest: v1.0.79)
[INFO] [stderr]       Adding quote v0.4.2 (latest: v1.0.35)
[INFO] [stderr]       Adding rawpointer v0.1.0 (latest: v0.2.1)
[INFO] [stderr]       Adding syn v0.12.15 (latest: v2.0.58)
[INFO] [stderr]       Adding unicode-xid v0.1.0 (latest: v0.2.4)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded variant_name_derive v0.0.1
[INFO] [stderr]   Downloaded syn v0.12.15
[INFO] [stderr]   Downloaded num-complex v0.1.43
[INFO] [stderr]   Downloaded rawpointer v0.1.0
[INFO] [stderr]   Downloaded boow v0.1.3
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.18
[INFO] [stderr]   Downloaded crossbeam-deque v0.8.5
[INFO] [stderr]   Downloaded rayon-core v1.12.1
[INFO] [stderr]   Downloaded rayon v1.10.0
[INFO] [stderr]   Downloaded itertools v0.7.11
[INFO] [stderr]   Downloaded ndarray v0.11.2
[INFO] [stderr]   Downloaded aflak_cake v0.0.3
[INFO] [stderr]   Downloaded matrixmultiply v0.1.15
[INFO] [stderr]   Downloaded variant_name v0.0.1
[INFO] [stderr]   Downloaded proc-macro2 v0.2.3
[INFO] [stderr]   Downloaded quote v0.4.2
[INFO] [stderr]   Downloaded num-traits v0.1.43
[INFO] [stderr]   Downloaded fitrs v0.2.6
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1ad81264d5dcee9b4788965376ed86ea7168bf679a19364dfc5631909eb3a31b
[INFO] running `Command { std: "docker" "start" "-a" "1ad81264d5dcee9b4788965376ed86ea7168bf679a19364dfc5631909eb3a31b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ad81264d5dcee9b4788965376ed86ea7168bf679a19364dfc5631909eb3a31b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ad81264d5dcee9b4788965376ed86ea7168bf679a19364dfc5631909eb3a31b", kill_on_drop: false }`
[INFO] [stdout] 1ad81264d5dcee9b4788965376ed86ea7168bf679a19364dfc5631909eb3a31b
[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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fc357ca9e237180d4b32d4ada93d9a3633e68d40470e06790c74341701907af9
[INFO] running `Command { std: "docker" "start" "-a" "fc357ca9e237180d4b32d4ada93d9a3633e68d40470e06790c74341701907af9", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling autocfg v1.2.0
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling ndarray v0.11.2
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]     Checking variant_name v0.0.1
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking boow v0.1.3
[INFO] [stderr]    Compiling proc-macro2 v0.2.3
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking fitrs v0.2.6
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling quote v0.4.2
[INFO] [stderr]    Compiling syn v0.12.15
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]    Compiling variant_name_derive v0.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking aflak_cake v0.0.3
[INFO] [stderr]     Checking aflak_primitives v0.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.24s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.12.15
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "fc357ca9e237180d4b32d4ada93d9a3633e68d40470e06790c74341701907af9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc357ca9e237180d4b32d4ada93d9a3633e68d40470e06790c74341701907af9", kill_on_drop: false }`
[INFO] [stdout] fc357ca9e237180d4b32d4ada93d9a3633e68d40470e06790c74341701907af9
[INFO] checking aflak_primitives-0.0.3 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate aflak_primitives 0.0.3 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate aflak_primitives 0.0.3 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate aflak_primitives 0.0.3
[INFO] finished tweaking crates.io crate aflak_primitives 0.0.3
[INFO] tweaked toml for crates.io crate aflak_primitives 0.0.3 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f69e9e04d34269d3d2010f4860c21622d349352e489e318041b0aa7e72941ef9
[INFO] running `Command { std: "docker" "start" "-a" "f69e9e04d34269d3d2010f4860c21622d349352e489e318041b0aa7e72941ef9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f69e9e04d34269d3d2010f4860c21622d349352e489e318041b0aa7e72941ef9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f69e9e04d34269d3d2010f4860c21622d349352e489e318041b0aa7e72941ef9", kill_on_drop: false }`
[INFO] [stdout] f69e9e04d34269d3d2010f4860c21622d349352e489e318041b0aa7e72941ef9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 68f168aa24218ecec4ec97679f77254130389b60715d0622eb9885e1d4a8d40f
[INFO] running `Command { std: "docker" "start" "-a" "68f168aa24218ecec4ec97679f77254130389b60715d0622eb9885e1d4a8d40f", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling autocfg v1.2.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]    Compiling ndarray v0.11.2
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking variant_name v0.0.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking boow v0.1.3
[INFO] [stderr]    Compiling proc-macro2 v0.2.3
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking fitrs v0.2.6
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling quote v0.4.2
[INFO] [stderr]    Compiling syn v0.12.15
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]    Compiling variant_name_derive v0.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking aflak_cake v0.0.3
[INFO] [stderr]     Checking aflak_primitives v0.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.26s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.12.15
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "68f168aa24218ecec4ec97679f77254130389b60715d0622eb9885e1d4a8d40f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68f168aa24218ecec4ec97679f77254130389b60715d0622eb9885e1d4a8d40f", kill_on_drop: false }`
[INFO] [stdout] 68f168aa24218ecec4ec97679f77254130389b60715d0622eb9885e1d4a8d40f