[INFO] fetching crate cargo-xbuild 0.6.6...
[INFO] checking cargo-xbuild-0.6.6 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate cargo-xbuild 0.6.6 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate cargo-xbuild 0.6.6 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 cargo-xbuild 0.6.6
[INFO] finished tweaking crates.io crate cargo-xbuild 0.6.6
[INFO] tweaked toml for crates.io crate cargo-xbuild 0.6.6 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate cargo-xbuild 0.6.6 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 anyhow v1.0.33
[INFO] [stderr]   Downloaded cargo_metadata v0.11.4
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.9
[INFO] [stderr]   Downloaded syn v1.0.44
[INFO] [stderr]   Downloaded libc v0.2.79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] fb1bd88ae94869720ca74b9a7c4fc1e395520ea6c9ac1a555ef717ec6691c868
[INFO] running `Command { std: "docker" "start" "-a" "fb1bd88ae94869720ca74b9a7c4fc1e395520ea6c9ac1a555ef717ec6691c868", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb1bd88ae94869720ca74b9a7c4fc1e395520ea6c9ac1a555ef717ec6691c868", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb1bd88ae94869720ca74b9a7c4fc1e395520ea6c9ac1a555ef717ec6691c868", kill_on_drop: false }`
[INFO] [stdout] fb1bd88ae94869720ca74b9a7c4fc1e395520ea6c9ac1a555ef717ec6691c868
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 6b69b1612de6cd1b731d67db94d200d675eb1f30b496287c698d77940cba9d98
[INFO] running `Command { std: "docker" "start" "-a" "6b69b1612de6cd1b731d67db94d200d675eb1f30b496287c698d77940cba9d98", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.44
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]    Compiling serde_json v1.0.59
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling anyhow v1.0.33
[INFO] [stderr]    Compiling cargo-xbuild v0.6.6 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking rustc_version v0.2.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking semver v0.10.0
[INFO] [stderr]     Checking toml v0.5.7
[INFO] [stderr]     Checking cargo_metadata v0.11.4
[INFO] [stdout] warning: multiple lines skipped by escaped newline
[INFO] [stdout]    --> src/lib.rs:204:77
[INFO] [stdout]     |
[INFO] [stdout] 204 |               error and will cause build scripts of dependencies to break.\n\n\
[INFO] [stdout]     |  _____________________________________________________________________________^
[INFO] [stdout] 205 | |
[INFO] [stdout] 206 | |             To build for the target system either pass a `--target` argument or \
[INFO] [stdout]     | |____________^ skipping everything up to and including this point
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple lines skipped by escaped newline
[INFO] [stdout]    --> src/lib.rs:204:77
[INFO] [stdout]     |
[INFO] [stdout] 204 |               error and will cause build scripts of dependencies to break.\n\n\
[INFO] [stdout]     |  _____________________________________________________________________________^
[INFO] [stdout] 205 | |
[INFO] [stdout] 206 | |             To build for the target system either pass a `--target` argument or \
[INFO] [stdout]     | |____________^ skipping everything up to and including this point
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.41s
[INFO] running `Command { std: "docker" "inspect" "6b69b1612de6cd1b731d67db94d200d675eb1f30b496287c698d77940cba9d98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b69b1612de6cd1b731d67db94d200d675eb1f30b496287c698d77940cba9d98", kill_on_drop: false }`
[INFO] [stdout] 6b69b1612de6cd1b731d67db94d200d675eb1f30b496287c698d77940cba9d98