[INFO] cloning repository https://github.com/hseeberger/tower-experiments [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hseeberger/tower-experiments" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhseeberger%2Ftower-experiments", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhseeberger%2Ftower-experiments'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 6305c0edc7426314ac6c7f38e153422d2661ae41 [INFO] checking hseeberger/tower-experiments against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhseeberger%2Ftower-experiments" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/hseeberger/tower-experiments 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] removed /workspace/builds/worker-7-tc1/source/rust-toolchain.toml [INFO] started tweaking git repo https://github.com/hseeberger/tower-experiments [INFO] finished tweaking git repo https://github.com/hseeberger/tower-experiments [INFO] tweaked toml for git repo https://github.com/hseeberger/tower-experiments written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/hseeberger/tower-experiments 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] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded hdrhistogram v7.5.2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 80f4ed4f679c29cb593a08f3809924772ac711006427e868dd84360a5eb41627 [INFO] running `Command { std: "docker" "start" "-a" "80f4ed4f679c29cb593a08f3809924772ac711006427e868dd84360a5eb41627", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "80f4ed4f679c29cb593a08f3809924772ac711006427e868dd84360a5eb41627", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "80f4ed4f679c29cb593a08f3809924772ac711006427e868dd84360a5eb41627", kill_on_drop: false }` [INFO] [stdout] 80f4ed4f679c29cb593a08f3809924772ac711006427e868dd84360a5eb41627 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 0ffabf57f3db9c30e8d486f73b7cff2974962e10474f6b5e2412621104541cbe [INFO] running `Command { std: "docker" "start" "-a" "0ffabf57f3db9c30e8d486f73b7cff2974962e10474f6b5e2412621104541cbe", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.69 [INFO] [stderr] Compiling libc v0.2.149 [INFO] [stderr] Compiling futures-core v0.3.28 [INFO] [stderr] Checking futures-sink v0.3.28 [INFO] [stderr] Compiling futures-channel v0.3.28 [INFO] [stderr] Compiling futures-task v0.3.28 [INFO] [stderr] Compiling futures-util v0.3.28 [INFO] [stderr] Compiling serde v1.0.189 [INFO] [stderr] Checking log v0.4.20 [INFO] [stderr] Checking memchr v2.6.4 [INFO] [stderr] Compiling slab v0.4.9 [INFO] [stderr] Checking tracing-core v0.1.32 [INFO] [stderr] Compiling num-traits v0.2.17 [INFO] [stderr] Checking futures-io v0.3.28 [INFO] [stderr] Compiling indexmap v1.9.3 [INFO] [stderr] Compiling serde_json v1.0.107 [INFO] [stderr] Checking regex-syntax v0.8.2 [INFO] [stderr] Checking regex-syntax v0.6.29 [INFO] [stderr] Checking bytes v1.5.0 [INFO] [stderr] Checking itoa v1.0.9 [INFO] [stderr] Checking ryu v1.0.15 [INFO] [stderr] Checking hashbrown v0.12.3 [INFO] [stderr] Checking overload v0.1.1 [INFO] [stderr] Checking tracing-log v0.1.3 [INFO] [stderr] Checking sharded-slab v0.1.7 [INFO] [stderr] Checking nu-ansi-term v0.46.0 [INFO] [stderr] Checking thread_local v1.1.7 [INFO] [stderr] Checking tower-layer v0.3.2 [INFO] [stderr] Checking smallvec v1.11.1 [INFO] [stderr] Compiling quote v1.0.33 [INFO] [stderr] Compiling syn v2.0.38 [INFO] [stderr] Checking getrandom v0.2.10 [INFO] [stderr] Checking num_cpus v1.16.0 [INFO] [stderr] Checking regex-automata v0.4.3 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking hdrhistogram v7.5.2 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking regex-automata v0.1.10 [INFO] [stderr] Checking matchers v0.1.0 [INFO] [stderr] Checking tracing-serde v0.1.3 [INFO] [stderr] Checking regex v1.10.2 [INFO] [stderr] Compiling futures-macro v0.3.28 [INFO] [stderr] Compiling tracing-attributes v0.1.27 [INFO] [stderr] Compiling tokio-macros v2.1.0 [INFO] [stderr] Compiling pin-project-internal v1.1.3 [INFO] [stderr] Checking tokio v1.33.0 [INFO] [stderr] Checking tracing v0.1.40 [INFO] [stderr] Checking pin-project v1.1.3 [INFO] [stderr] Checking tracing-subscriber v0.3.17 [INFO] [stderr] Checking tokio-util v0.7.9 [INFO] [stderr] Checking futures-executor v0.3.28 [INFO] [stderr] Checking tower v0.4.13 [INFO] [stderr] Checking futures v0.3.28 [INFO] [stderr] Checking tower-experiments v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.08s [INFO] running `Command { std: "docker" "inspect" "0ffabf57f3db9c30e8d486f73b7cff2974962e10474f6b5e2412621104541cbe", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0ffabf57f3db9c30e8d486f73b7cff2974962e10474f6b5e2412621104541cbe", kill_on_drop: false }` [INFO] [stdout] 0ffabf57f3db9c30e8d486f73b7cff2974962e10474f6b5e2412621104541cbe