[INFO] fetching crate scanner-rust 2.0.17...
[INFO] checking scanner-rust-2.0.17 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate scanner-rust 2.0.17 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate scanner-rust 2.0.17 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate scanner-rust 2.0.17
[INFO] finished tweaking crates.io crate scanner-rust 2.0.17
[INFO] tweaked toml for crates.io crate scanner-rust 2.0.17 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate scanner-rust 2.0.17 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded generic-array v1.0.0
[INFO] [stderr]   Downloaded enum-ordinalize v3.1.13
[INFO] [stderr]   Downloaded educe v0.4.22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ec3bef6a4ad0c8e2fb631592cdb7457109fe7d82318eb2a12165e5ac335e4b7b
[INFO] running `Command { std: "docker" "start" "-a" "ec3bef6a4ad0c8e2fb631592cdb7457109fe7d82318eb2a12165e5ac335e4b7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec3bef6a4ad0c8e2fb631592cdb7457109fe7d82318eb2a12165e5ac335e4b7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec3bef6a4ad0c8e2fb631592cdb7457109fe7d82318eb2a12165e5ac335e4b7b", kill_on_drop: false }`
[INFO] [stdout] ec3bef6a4ad0c8e2fb631592cdb7457109fe7d82318eb2a12165e5ac335e4b7b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f30c77543dda74ef9e22decb3c117a3d163bc100992f95aff84f15617d202432
[INFO] running `Command { std: "docker" "start" "-a" "f30c77543dda74ef9e22decb3c117a3d163bc100992f95aff84f15617d202432", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]     Checking utf8-width v0.1.6
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.31
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking generic-array v1.0.0
[INFO] [stderr]    Compiling enum-ordinalize v3.1.13
[INFO] [stderr]    Compiling educe v0.4.22
[INFO] [stderr]     Checking scanner-rust v2.0.17 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.58s
[INFO] running `Command { std: "docker" "inspect" "f30c77543dda74ef9e22decb3c117a3d163bc100992f95aff84f15617d202432", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f30c77543dda74ef9e22decb3c117a3d163bc100992f95aff84f15617d202432", kill_on_drop: false }`
[INFO] [stdout] f30c77543dda74ef9e22decb3c117a3d163bc100992f95aff84f15617d202432