[INFO] fetching crate nova_middleware 0.0.1...
[INFO] checking nova_middleware-0.0.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate nova_middleware 0.0.1 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate nova_middleware 0.0.1 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 nova_middleware 0.0.1
[INFO] finished tweaking crates.io crate nova_middleware 0.0.1
[INFO] tweaked toml for crates.io crate nova_middleware 0.0.1 written to /workspace/builds/worker-3-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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 56 packages
[INFO] [stderr]       Adding base64 v0.21.7 (latest: v0.22.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] [stderr]       Adding windows-core v0.52.0 (latest: v0.55.0)
[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nova_serde v0.0.1
[INFO] [stderr]   Downloaded nova_core v0.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] a8a9a062c088193df6698deeb9a3f474f4285acd2489349ab0e5d449cd77cc96
[INFO] running `Command { std: "docker" "start" "-a" "a8a9a062c088193df6698deeb9a3f474f4285acd2489349ab0e5d449cd77cc96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8a9a062c088193df6698deeb9a3f474f4285acd2489349ab0e5d449cd77cc96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8a9a062c088193df6698deeb9a3f474f4285acd2489349ab0e5d449cd77cc96", kill_on_drop: false }`
[INFO] [stdout] a8a9a062c088193df6698deeb9a3f474f4285acd2489349ab0e5d449cd77cc96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] fb6932ae5ac655b541ca8bd2c50ddcf65698203995610aa1f51b0a2034d2fadd
[INFO] running `Command { std: "docker" "start" "-a" "fb6932ae5ac655b541ca8bd2c50ddcf65698203995610aa1f51b0a2034d2fadd", kill_on_drop: false }`
[INFO] [stderr]     Checking percent-encoding v2.3.1
[INFO] [stderr]     Checking xml-rs v0.8.20
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking form_urlencoded v1.2.1
[INFO] [stderr]     Checking uuid v1.8.0
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking serde-xml-rs v0.6.0
[INFO] [stderr]     Checking nova_serde v0.0.1
[INFO] [stderr]     Checking nova_core v0.0.1
[INFO] [stderr]     Checking nova_middleware v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.78s
[INFO] running `Command { std: "docker" "inspect" "fb6932ae5ac655b541ca8bd2c50ddcf65698203995610aa1f51b0a2034d2fadd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb6932ae5ac655b541ca8bd2c50ddcf65698203995610aa1f51b0a2034d2fadd", kill_on_drop: false }`
[INFO] [stdout] fb6932ae5ac655b541ca8bd2c50ddcf65698203995610aa1f51b0a2034d2fadd
[INFO] checking nova_middleware-0.0.1 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate nova_middleware 0.0.1 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate nova_middleware 0.0.1 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nova_middleware 0.0.1
[INFO] finished tweaking crates.io crate nova_middleware 0.0.1
[INFO] tweaked toml for crates.io crate nova_middleware 0.0.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 56 packages
[INFO] [stderr]       Adding base64 v0.21.7 (latest: v0.22.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] [stderr]       Adding windows-core v0.52.0 (latest: v0.55.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a04c595b1dfc4c7b993371e5393b09afcf851280c8b7bc1bc0da0146ec98336b
[INFO] running `Command { std: "docker" "start" "-a" "a04c595b1dfc4c7b993371e5393b09afcf851280c8b7bc1bc0da0146ec98336b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a04c595b1dfc4c7b993371e5393b09afcf851280c8b7bc1bc0da0146ec98336b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a04c595b1dfc4c7b993371e5393b09afcf851280c8b7bc1bc0da0146ec98336b", kill_on_drop: false }`
[INFO] [stdout] a04c595b1dfc4c7b993371e5393b09afcf851280c8b7bc1bc0da0146ec98336b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e2b0428dbf1a2aea4d3bf439f71a0e2bc2b1f9b6b39aa159c0053290e1fc93dc
[INFO] running `Command { std: "docker" "start" "-a" "e2b0428dbf1a2aea4d3bf439f71a0e2bc2b1f9b6b39aa159c0053290e1fc93dc", kill_on_drop: false }`
[INFO] [stderr]     Checking percent-encoding v2.3.1
[INFO] [stderr]     Checking xml-rs v0.8.20
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking form_urlencoded v1.2.1
[INFO] [stderr]     Checking uuid v1.8.0
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking serde-xml-rs v0.6.0
[INFO] [stderr]     Checking nova_serde v0.0.1
[INFO] [stderr]     Checking nova_core v0.0.1
[INFO] [stderr]     Checking nova_middleware v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.04s
[INFO] running `Command { std: "docker" "inspect" "e2b0428dbf1a2aea4d3bf439f71a0e2bc2b1f9b6b39aa159c0053290e1fc93dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2b0428dbf1a2aea4d3bf439f71a0e2bc2b1f9b6b39aa159c0053290e1fc93dc", kill_on_drop: false }`
[INFO] [stdout] e2b0428dbf1a2aea4d3bf439f71a0e2bc2b1f9b6b39aa159c0053290e1fc93dc