[INFO] fetching crate xkcd_api 1.0.0...
[INFO] checking xkcd_api-1.0.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate xkcd_api 1.0.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate xkcd_api 1.0.0 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 xkcd_api 1.0.0
[INFO] finished tweaking crates.io crate xkcd_api 1.0.0
[INFO] tweaked toml for crates.io crate xkcd_api 1.0.0 written to /workspace/builds/worker-7-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 42 packages
[INFO] [stderr]       Adding base64 v0.21.7 (latest: v0.22.0)
[INFO] [stderr]       Adding rustls v0.22.3 (latest: v0.23.4)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded nanoserde-derive v0.1.22
[INFO] [stderr]   Downloaded nanoserde v0.1.37
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 714ca7efe319063fb55236d99f7a10fda20a14655475c43addc7d9754ea9c878
[INFO] running `Command { std: "docker" "start" "-a" "714ca7efe319063fb55236d99f7a10fda20a14655475c43addc7d9754ea9c878", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "714ca7efe319063fb55236d99f7a10fda20a14655475c43addc7d9754ea9c878", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "714ca7efe319063fb55236d99f7a10fda20a14655475c43addc7d9754ea9c878", kill_on_drop: false }`
[INFO] [stdout] 714ca7efe319063fb55236d99f7a10fda20a14655475c43addc7d9754ea9c878
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 924a6663c15b3973ea56ad65563cd33e4e4334d605c853e8a6f7c4bbb9906a48
[INFO] running `Command { std: "docker" "start" "-a" "924a6663c15b3973ea56ad65563cd33e4e4334d605c853e8a6f7c4bbb9906a48", kill_on_drop: false }`
[INFO] [stderr]    Compiling ring v0.17.8
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking untrusted v0.9.0
[INFO] [stderr]     Checking rustls-pki-types v1.4.1
[INFO] [stderr]    Compiling rustls v0.22.3
[INFO] [stderr]     Checking zeroize v1.7.0
[INFO] [stderr]    Compiling nanoserde-derive v0.1.22
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking webpki-roots v0.26.1
[INFO] [stderr]     Checking nanoserde v0.1.37
[INFO] [stderr]     Checking rustls-webpki v0.102.2
[INFO] [stderr]     Checking ureq v2.9.6
[INFO] [stderr]     Checking xkcd_api v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.90s
[INFO] running `Command { std: "docker" "inspect" "924a6663c15b3973ea56ad65563cd33e4e4334d605c853e8a6f7c4bbb9906a48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "924a6663c15b3973ea56ad65563cd33e4e4334d605c853e8a6f7c4bbb9906a48", kill_on_drop: false }`
[INFO] [stdout] 924a6663c15b3973ea56ad65563cd33e4e4334d605c853e8a6f7c4bbb9906a48
[INFO] checking xkcd_api-1.0.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate xkcd_api 1.0.0 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate xkcd_api 1.0.0 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 xkcd_api 1.0.0
[INFO] finished tweaking crates.io crate xkcd_api 1.0.0
[INFO] tweaked toml for crates.io crate xkcd_api 1.0.0 written to /workspace/builds/worker-7-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 42 packages
[INFO] [stderr]       Adding base64 v0.21.7 (latest: v0.22.0)
[INFO] [stderr]       Adding rustls v0.22.3 (latest: v0.23.4)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 083580b46afca91d3f27e0d1fe26bacbe988149da9c2f9a3c709ec75e61b649e
[INFO] running `Command { std: "docker" "start" "-a" "083580b46afca91d3f27e0d1fe26bacbe988149da9c2f9a3c709ec75e61b649e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "083580b46afca91d3f27e0d1fe26bacbe988149da9c2f9a3c709ec75e61b649e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "083580b46afca91d3f27e0d1fe26bacbe988149da9c2f9a3c709ec75e61b649e", kill_on_drop: false }`
[INFO] [stdout] 083580b46afca91d3f27e0d1fe26bacbe988149da9c2f9a3c709ec75e61b649e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] f9b31801b81fafb16353fd11666b892fe852c4ee4272bace810cda5f20f6f945
[INFO] running `Command { std: "docker" "start" "-a" "f9b31801b81fafb16353fd11666b892fe852c4ee4272bace810cda5f20f6f945", kill_on_drop: false }`
[INFO] [stderr]    Compiling ring v0.17.8
[INFO] [stderr]     Checking untrusted v0.9.0
[INFO] [stderr]     Checking rustls-pki-types v1.4.1
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]    Compiling rustls v0.22.3
[INFO] [stderr]     Checking zeroize v1.7.0
[INFO] [stderr]    Compiling nanoserde-derive v0.1.22
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking webpki-roots v0.26.1
[INFO] [stderr]     Checking nanoserde v0.1.37
[INFO] [stderr]     Checking rustls-webpki v0.102.2
[INFO] [stderr]     Checking ureq v2.9.6
[INFO] [stderr]     Checking xkcd_api v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.81s
[INFO] running `Command { std: "docker" "inspect" "f9b31801b81fafb16353fd11666b892fe852c4ee4272bace810cda5f20f6f945", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9b31801b81fafb16353fd11666b892fe852c4ee4272bace810cda5f20f6f945", kill_on_drop: false }`
[INFO] [stdout] f9b31801b81fafb16353fd11666b892fe852c4ee4272bace810cda5f20f6f945