[INFO] fetching crate imperator-save 0.4.2...
[INFO] checking imperator-save-0.4.2 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate imperator-save 0.4.2 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate imperator-save 0.4.2 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 imperator-save 0.4.2
[INFO] finished tweaking crates.io crate imperator-save 0.4.2
[INFO] tweaked toml for crates.io crate imperator-save 0.4.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate imperator-save 0.4.2 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded jomini_derive v0.2.2
[INFO] [stderr]   Downloaded libdeflater v0.11.0
[INFO] [stderr]   Downloaded serde_derive v1.0.138
[INFO] [stderr]   Downloaded attohttpc v0.23.1
[INFO] [stderr]   Downloaded zip v0.6.2
[INFO] [stderr]   Downloaded jomini v0.20.0
[INFO] [stderr]   Downloaded serde v1.0.138
[INFO] [stderr]   Downloaded libdeflate-sys v0.11.0
[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] 6e8211e4c0f17e4ec2c44bdbdeb88ecf5b5fa05b76d80a250188a90835403731
[INFO] running `Command { std: "docker" "start" "-a" "6e8211e4c0f17e4ec2c44bdbdeb88ecf5b5fa05b76d80a250188a90835403731", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e8211e4c0f17e4ec2c44bdbdeb88ecf5b5fa05b76d80a250188a90835403731", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e8211e4c0f17e4ec2c44bdbdeb88ecf5b5fa05b76d80a250188a90835403731", kill_on_drop: false }`
[INFO] [stdout] 6e8211e4c0f17e4ec2c44bdbdeb88ecf5b5fa05b76d80a250188a90835403731
[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] 73c268c70807de1e7dbf81bc5e35b28253daf721bdb5408843f31a946feef321
[INFO] running `Command { std: "docker" "start" "-a" "73c268c70807de1e7dbf81bc5e35b28253daf721bdb5408843f31a946feef321", kill_on_drop: false }`
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling serde_derive v1.0.138
[INFO] [stderr]    Compiling serde v1.0.138
[INFO] [stderr]     Checking miniz_oxide v0.5.3
[INFO] [stderr]    Compiling serde_json v1.0.82
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]    Compiling jomini_derive v0.2.2
[INFO] [stderr]    Compiling imperator-save v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking miniz_oxide v0.6.2
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking unicode-normalization v0.1.21
[INFO] [stderr]    Compiling openssl-macros v0.1.0
[INFO] [stderr]     Checking flate2 v1.0.24
[INFO] [stderr]     Checking zip v0.6.2
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking openssl v0.10.40
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking thiserror v1.0.31
[INFO] [stderr]     Checking native-tls v0.2.10
[INFO] [stderr]     Checking attohttpc v0.23.1
[INFO] [stderr]     Checking jomini v0.20.0
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.77s
[INFO] running `Command { std: "docker" "inspect" "73c268c70807de1e7dbf81bc5e35b28253daf721bdb5408843f31a946feef321", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73c268c70807de1e7dbf81bc5e35b28253daf721bdb5408843f31a946feef321", kill_on_drop: false }`
[INFO] [stdout] 73c268c70807de1e7dbf81bc5e35b28253daf721bdb5408843f31a946feef321