[INFO] fetching crate ruspec 0.1.3...
[INFO] checking ruspec-0.1.3 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate ruspec 0.1.3 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate ruspec 0.1.3 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 ruspec 0.1.3
[INFO] finished tweaking crates.io crate ruspec 0.1.3
[INFO] tweaked toml for crates.io crate ruspec 0.1.3 written to /workspace/builds/worker-0-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 45 packages
[INFO] [stderr]       Adding colored v1.9.4 (latest: v2.1.0)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding proc-macro2 v0.4.30 (latest: v1.0.79)
[INFO] [stderr]       Adding quote v0.6.13 (latest: v1.0.35)
[INFO] [stderr]       Adding syn v0.15.44 (latest: v2.0.58)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding synstructure v0.12.6 (latest: v0.13.1)
[INFO] [stderr]       Adding unicode-xid v0.1.0 (latest: v0.2.4)
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 3bd1d7042b1285781011d4023d83f5e6ec55f7d23f6c2a2d3bb88d26dd98bf47
[INFO] running `Command { std: "docker" "start" "-a" "3bd1d7042b1285781011d4023d83f5e6ec55f7d23f6c2a2d3bb88d26dd98bf47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3bd1d7042b1285781011d4023d83f5e6ec55f7d23f6c2a2d3bb88d26dd98bf47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bd1d7042b1285781011d4023d83f5e6ec55f7d23f6c2a2d3bb88d26dd98bf47", kill_on_drop: false }`
[INFO] [stdout] 3bd1d7042b1285781011d4023d83f5e6ec55f7d23f6c2a2d3bb88d26dd98bf47
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 928f76cbcfdddfc6964d477fa9d17716b0f21e77815bcdb81616be05074bd3ae
[INFO] running `Command { std: "docker" "start" "-a" "928f76cbcfdddfc6964d477fa9d17716b0f21e77815bcdb81616be05074bd3ae", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking gimli v0.28.1
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling backtrace v0.3.71
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]     Checking regex-syntax v0.8.3
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]     Checking rustc-demangle v0.1.23
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking is-terminal v0.4.12
[INFO] [stderr]     Checking colored v1.9.4
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]     Checking addr2line v0.21.0
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]     Checking Inflector v0.11.4
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking ruspec v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.16s
[INFO] running `Command { std: "docker" "inspect" "928f76cbcfdddfc6964d477fa9d17716b0f21e77815bcdb81616be05074bd3ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "928f76cbcfdddfc6964d477fa9d17716b0f21e77815bcdb81616be05074bd3ae", kill_on_drop: false }`
[INFO] [stdout] 928f76cbcfdddfc6964d477fa9d17716b0f21e77815bcdb81616be05074bd3ae