[INFO] fetching crate find_unicode 0.4.0...
[INFO] checking find_unicode-0.4.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate find_unicode 0.4.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate find_unicode 0.4.0 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 find_unicode 0.4.0
[INFO] finished tweaking crates.io crate find_unicode 0.4.0
[INFO] tweaked toml for crates.io crate find_unicode 0.4.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate find_unicode 0.4.0 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 v0.9.0
[INFO] [stderr]   Downloaded wincolor v1.0.2
[INFO] [stderr]   Downloaded nodrop v0.1.13
[INFO] [stderr]   Downloaded timer v0.2.0
[INFO] [stderr]   Downloaded unicode-width v0.1.6
[INFO] [stderr]   Downloaded fuzzy-matcher v0.3.7
[INFO] [stderr]   Downloaded beef v0.5.1
[INFO] [stderr]   Downloaded defer-drop v1.2.0
[INFO] [stderr]   Downloaded rayon v1.2.0
[INFO] [stderr]   Downloaded regex v1.3.1
[INFO] [stderr]   Downloaded regex-syntax v0.6.12
[INFO] [stderr]   Downloaded libc v0.2.108
[INFO] [stderr]   Downloaded aho-corasick v0.7.6
[INFO] [stderr]   Downloaded winapi-util v0.1.2
[INFO] [stderr]   Downloaded termcolor v1.0.5
[INFO] [stderr]   Downloaded either v1.5.3
[INFO] [stderr]   Downloaded arrayvec v0.4.11
[INFO] [stderr]   Downloaded rayon-core v1.6.0
[INFO] [stderr]   Downloaded const_fn v0.4.8
[INFO] [stderr]   Downloaded base-x v0.2.8
[INFO] [stderr]   Downloaded autocfg v0.1.6
[INFO] [stderr]   Downloaded cc v1.0.45
[INFO] [stderr]   Downloaded tuikit v0.4.5
[INFO] [stderr]   Downloaded skim v0.9.4
[INFO] [stderr]   Downloaded unicode-segmentation v1.3.0
[INFO] [stderr]   Downloaded sha1 v0.6.0
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7d28f07cd40ee1993a6bbee64ebfb8afecd3cb56b641e74aa78f80ee8c0f06c1
[INFO] running `Command { std: "docker" "start" "-a" "7d28f07cd40ee1993a6bbee64ebfb8afecd3cb56b641e74aa78f80ee8c0f06c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7d28f07cd40ee1993a6bbee64ebfb8afecd3cb56b641e74aa78f80ee8c0f06c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d28f07cd40ee1993a6bbee64ebfb8afecd3cb56b641e74aa78f80ee8c0f06c1", kill_on_drop: false }`
[INFO] [stdout] 7d28f07cd40ee1993a6bbee64ebfb8afecd3cb56b641e74aa78f80ee8c0f06c1
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a82614725b6c86cfabe66fa4fd6d9c46e0e3b2f22c5fbdc4d5b8b89cfdfc07aa
[INFO] running `Command { std: "docker" "start" "-a" "a82614725b6c86cfabe66fa4fd6d9c46e0e3b2f22c5fbdc4d5b8b89cfdfc07aa", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling standback v0.2.17
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling rayon-core v1.6.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling crossbeam-queue v0.3.2
[INFO] [stderr]    Compiling const_fn v0.4.8
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling time v0.2.27
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]    Compiling derive_builder v0.9.0
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking termcolor v1.0.5
[INFO] [stderr]     Checking beef v0.5.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking shlex v0.1.1
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking fuzzy-matcher v0.3.7
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking defer-drop v1.2.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling vte_generate_state_changes v0.1.1
[INFO] [stderr]     Checking crossbeam v0.8.1
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking vte v0.9.0
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking nix v0.19.1
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking term v0.6.1
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]     Checking rayon v1.2.0
[INFO] [stderr]     Checking timer v0.2.0
[INFO] [stderr]     Checking env_logger v0.8.4
[INFO] [stderr]     Checking tuikit v0.4.5
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling time-macros-impl v0.1.2
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]     Checking time-macros v0.1.1
[INFO] [stderr]     Checking structopt v0.3.25
[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 find_unicode v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.61s
[INFO] running `Command { std: "docker" "inspect" "a82614725b6c86cfabe66fa4fd6d9c46e0e3b2f22c5fbdc4d5b8b89cfdfc07aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a82614725b6c86cfabe66fa4fd6d9c46e0e3b2f22c5fbdc4d5b8b89cfdfc07aa", kill_on_drop: false }`
[INFO] [stdout] a82614725b6c86cfabe66fa4fd6d9c46e0e3b2f22c5fbdc4d5b8b89cfdfc07aa
[INFO] checking find_unicode-0.4.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate find_unicode 0.4.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate find_unicode 0.4.0 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate find_unicode 0.4.0
[INFO] finished tweaking crates.io crate find_unicode 0.4.0
[INFO] tweaked toml for crates.io crate find_unicode 0.4.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate crates.io crate find_unicode 0.4.0 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 40f82f685aa2941dd1029e2f487c8d4c4523613a486403a87b1fdfabf5b9a522
[INFO] running `Command { std: "docker" "start" "-a" "40f82f685aa2941dd1029e2f487c8d4c4523613a486403a87b1fdfabf5b9a522", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40f82f685aa2941dd1029e2f487c8d4c4523613a486403a87b1fdfabf5b9a522", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40f82f685aa2941dd1029e2f487c8d4c4523613a486403a87b1fdfabf5b9a522", kill_on_drop: false }`
[INFO] [stdout] 40f82f685aa2941dd1029e2f487c8d4c4523613a486403a87b1fdfabf5b9a522
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 158650a02a6071277df0e29ede062e19a39122c2bd001f4a80933aaaa87d423f
[INFO] running `Command { std: "docker" "start" "-a" "158650a02a6071277df0e29ede062e19a39122c2bd001f4a80933aaaa87d423f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling standback v0.2.17
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling const_fn v0.4.8
[INFO] [stderr]    Compiling crossbeam-queue v0.3.2
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling rayon-core v1.6.0
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling time v0.2.27
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling derive_builder v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking termcolor v1.0.5
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking shlex v0.1.1
[INFO] [stderr]     Checking beef v0.5.1
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking fuzzy-matcher v0.3.7
[INFO] [stderr]     Checking crossbeam v0.8.1
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking defer-drop v1.2.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling vte_generate_state_changes v0.1.1
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking nix v0.19.1
[INFO] [stderr]     Checking vte v0.9.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking term v0.6.1
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]     Checking rayon v1.2.0
[INFO] [stderr]     Checking env_logger v0.8.4
[INFO] [stderr]     Checking timer v0.2.0
[INFO] [stderr]     Checking tuikit v0.4.5
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling time-macros-impl v0.1.2
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking time-macros v0.1.1
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]     Checking structopt v0.3.25
[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 find_unicode v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.96s
[INFO] running `Command { std: "docker" "inspect" "158650a02a6071277df0e29ede062e19a39122c2bd001f4a80933aaaa87d423f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "158650a02a6071277df0e29ede062e19a39122c2bd001f4a80933aaaa87d423f", kill_on_drop: false }`
[INFO] [stdout] 158650a02a6071277df0e29ede062e19a39122c2bd001f4a80933aaaa87d423f