[INFO] fetching crate cargo-ex 0.1.1...
[INFO] checking cargo-ex-0.1.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate cargo-ex 0.1.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate cargo-ex 0.1.1 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 cargo-ex 0.1.1
[INFO] finished tweaking crates.io crate cargo-ex 0.1.1
[INFO] tweaked toml for crates.io crate cargo-ex 0.1.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate cargo-ex 0.1.1 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded vte_generate_state_changes v0.1.1
[INFO] [stderr]   Downloaded term v0.6.1
[INFO] [stderr]   Downloaded skim v0.9.4
[INFO] [stderr]   Downloaded beef v0.5.1
[INFO] [stderr]   Downloaded quote v1.0.17
[INFO] [stderr]   Downloaded anyhow v1.0.56
[INFO] [stderr]   Downloaded regex v1.5.5
[INFO] [stderr]   Downloaded nix v0.14.1
[INFO] [stderr]   Downloaded libc v0.2.121
[INFO] [stderr]   Downloaded syn v1.0.90
[INFO] [stderr]   Downloaded crossbeam-queue v0.3.5
[INFO] [stderr]   Downloaded crossbeam-channel v0.4.4
[INFO] [stderr]   Downloaded derive_builder v0.9.0
[INFO] [stderr]   Downloaded once_cell v1.10.0
[INFO] [stderr]   Downloaded crossbeam-channel v0.5.4
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.8
[INFO] [stderr]   Downloaded log v0.4.16
[INFO] [stderr]   Downloaded tuikit v0.4.5
[INFO] [stderr]   Downloaded vte v0.9.0
[INFO] [stderr]   Downloaded crossbeam v0.8.1
[INFO] [stderr]   Downloaded defer-drop v1.2.0
[INFO] [stderr]   Downloaded derive_builder_core v0.9.0
[INFO] [stderr]   Downloaded fuzzy-matcher v0.3.7
[INFO] [stderr]   Downloaded timer v0.2.0
[INFO] [stderr]   Downloaded utf8parse v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 888939039cb93a7c9d2fc17367352f64dda1008befc01d981e4371473d4db62f
[INFO] running `Command { std: "docker" "start" "-a" "888939039cb93a7c9d2fc17367352f64dda1008befc01d981e4371473d4db62f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "888939039cb93a7c9d2fc17367352f64dda1008befc01d981e4371473d4db62f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "888939039cb93a7c9d2fc17367352f64dda1008befc01d981e4371473d4db62f", kill_on_drop: false }`
[INFO] [stdout] 888939039cb93a7c9d2fc17367352f64dda1008befc01d981e4371473d4db62f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 31ade70da15227d38b0be2df8d7710583e31f89c412ce6befe00ca0df385dd39
[INFO] running `Command { std: "docker" "start" "-a" "31ade70da15227d38b0be2df8d7710583e31f89c412ce6befe00ca0df385dd39", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.90
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]    Compiling standback v0.2.17
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.4
[INFO] [stderr]    Compiling crossbeam-queue v0.3.5
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]    Compiling const_fn v0.4.9
[INFO] [stderr]     Checking once_cell v1.10.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking dirs-sys v0.3.7
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]    Compiling time v0.2.27
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling derive_builder v0.9.0
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking term v0.6.1
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling vte_generate_state_changes v0.1.1
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking utf8parse v0.2.0
[INFO] [stderr]    Compiling anyhow v1.0.56
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking timer v0.2.0
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking crossbeam v0.8.1
[INFO] [stderr]     Checking defer-drop v1.2.0
[INFO] [stderr]     Checking fuzzy-matcher v0.3.7
[INFO] [stderr]     Checking vte v0.9.0
[INFO] [stderr]     Checking nix v0.19.1
[INFO] [stderr]     Checking shlex v0.1.1
[INFO] [stderr]     Checking beef v0.5.1
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]     Checking tuikit v0.4.5
[INFO] [stderr]     Checking env_logger v0.8.4
[INFO] [stderr]    Compiling time-macros-impl v0.1.2
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]     Checking time-macros v0.1.1
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling derive_builder_core v0.9.0
[INFO] [stderr]     Checking skim v0.9.4
[INFO] [stderr]     Checking cargo-ex v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.04s
[INFO] running `Command { std: "docker" "inspect" "31ade70da15227d38b0be2df8d7710583e31f89c412ce6befe00ca0df385dd39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31ade70da15227d38b0be2df8d7710583e31f89c412ce6befe00ca0df385dd39", kill_on_drop: false }`
[INFO] [stdout] 31ade70da15227d38b0be2df8d7710583e31f89c412ce6befe00ca0df385dd39