[INFO] cloning repository https://github.com/szunami/flamegraph-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/szunami/flamegraph-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fszunami%2Fflamegraph-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fszunami%2Fflamegraph-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f2931399f4af9cf6fa819ee8bbad538fa573765d
[INFO] checking szunami/flamegraph-example against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fszunami%2Fflamegraph-example" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/szunami/flamegraph-example 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 git repo https://github.com/szunami/flamegraph-example
[INFO] finished tweaking git repo https://github.com/szunami/flamegraph-example
[INFO] tweaked toml for git repo https://github.com/szunami/flamegraph-example written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/szunami/flamegraph-example 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 symbolic-common v7.5.0
[INFO] [stderr]   Downloaded rustc-demangle v0.1.17
[INFO] [stderr]   Downloaded backtrace v0.3.53
[INFO] [stderr]   Downloaded inferno v0.10.1
[INFO] [stderr]   Downloaded ahash v0.4.6
[INFO] [stderr]   Downloaded quick-xml v0.19.0
[INFO] [stderr]   Downloaded cpp_demangle v0.3.1
[INFO] [stderr]   Downloaded msvc-demangler v0.8.0
[INFO] [stderr]   Downloaded symbolic-demangle v7.5.0
[INFO] [stderr]   Downloaded rgb v0.8.25
[INFO] [stderr]   Downloaded pprof v0.3.18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 71f0790d576115a6809e664febbd354d7a0589edf38ddcfa20451acc7f1b02ba
[INFO] running `Command { std: "docker" "start" "-a" "71f0790d576115a6809e664febbd354d7a0589edf38ddcfa20451acc7f1b02ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "71f0790d576115a6809e664febbd354d7a0589edf38ddcfa20451acc7f1b02ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71f0790d576115a6809e664febbd354d7a0589edf38ddcfa20451acc7f1b02ba", kill_on_drop: false }`
[INFO] [stdout] 71f0790d576115a6809e664febbd354d7a0589edf38ddcfa20451acc7f1b02ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 813a92dfe2269b2e6e81588122ac856b73a5a5131f156ff53081715426d803fb
[INFO] running `Command { std: "docker" "start" "-a" "813a92dfe2269b2e6e81588122ac856b73a5a5131f156ff53081715426d803fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.45
[INFO] [stderr]    Compiling getrandom v0.2.0
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking gimli v0.22.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]     Checking rustc-demangle v0.1.17
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking object v0.21.1
[INFO] [stderr]    Compiling proc-macro-hack v0.5.18
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling cpp_demangle v0.3.1
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling cc v1.0.61
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]     Checking instant v0.1.7
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking smallvec v1.4.2
[INFO] [stderr]     Checking debugid v0.7.2
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking bytemuck v1.4.1
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking quick-xml v0.19.0
[INFO] [stderr]     Checking lock_api v0.4.1
[INFO] [stderr]     Checking msvc-demangler v0.8.0
[INFO] [stderr]     Checking rgb v0.8.25
[INFO] [stderr]     Checking num-format v0.4.0
[INFO] [stderr]    Compiling pprof v0.3.18
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking str_stack v0.1.0
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]    Compiling symbolic-demangle v7.5.0
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking parking_lot_core v0.8.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking parking_lot v0.11.0
[INFO] [stderr]    Compiling const-random-macro v0.1.11
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking addr2line v0.13.0
[INFO] [stderr]     Checking const-random v0.1.11
[INFO] [stderr]     Checking ahash v0.4.6
[INFO] [stderr]     Checking backtrace v0.3.53
[INFO] [stderr]     Checking inferno v0.10.1
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.21
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking symbolic-common v7.5.0
[INFO] [stderr]     Checking thiserror v1.0.21
[INFO] [stderr]     Checking flamegraph-example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.52s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: quick-xml v0.19.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "813a92dfe2269b2e6e81588122ac856b73a5a5131f156ff53081715426d803fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "813a92dfe2269b2e6e81588122ac856b73a5a5131f156ff53081715426d803fb", kill_on_drop: false }`
[INFO] [stdout] 813a92dfe2269b2e6e81588122ac856b73a5a5131f156ff53081715426d803fb