[INFO] fetching crate hotmic-stdout 0.1.0...
[INFO] checking hotmic-stdout-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate hotmic-stdout 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate hotmic-stdout 0.1.0 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 hotmic-stdout 0.1.0
[INFO] finished tweaking crates.io crate hotmic-stdout 0.1.0
[INFO] tweaked toml for crates.io crate hotmic-stdout 0.1.0 written to /workspace/builds/worker-4-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 66 packages
[INFO] [stderr]       Adding autocfg v0.1.8 (latest: v1.2.0)
[INFO] [stderr]       Adding base64 v0.10.1 (latest: v0.22.0)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding cfg-if v0.1.10 (latest: v1.0.0)
[INFO] [stderr]       Adding cloudabi v0.0.3 (latest: v0.1.0)
[INFO] [stderr]       Adding crossbeam-channel v0.3.9 (latest: v0.5.12)
[INFO] [stderr]       Adding crossbeam-utils v0.6.6 (latest: v0.8.19)
[INFO] [stderr]       Adding derivative v1.0.4 (latest: v2.2.0)
[INFO] [stderr]       Adding futures v0.1.31 (latest: v0.3.30)
[INFO] [stderr]       Adding hashbrown v0.1.8 (latest: v0.14.3)
[INFO] [stderr]       Adding hdrhistogram v6.3.4 (latest: v7.5.4)
[INFO] [stderr]       Adding lock_api v0.1.5 (latest: v0.4.11)
[INFO] [stderr]       Adding nom v4.2.3 (latest: v7.1.3)
[INFO] [stderr]       Adding parking_lot v0.7.1 (latest: v0.12.1)
[INFO] [stderr]       Adding parking_lot_core v0.4.0 (latest: v0.9.9)
[INFO] [stderr]       Adding proc-macro2 v0.4.30 (latest: v1.0.79)
[INFO] [stderr]       Adding quanta v0.2.0 (latest: v0.12.3)
[INFO] [stderr]       Adding quote v0.6.13 (latest: v1.0.35)
[INFO] [stderr]       Adding rand v0.6.5 (latest: v0.8.5)
[INFO] [stderr]       Adding rand_chacha v0.1.1 (latest: v0.3.1)
[INFO] [stderr]       Adding rand_core v0.3.1 (latest: v0.6.4)
[INFO] [stderr]       Adding rand_core v0.4.2 (latest: v0.6.4)
[INFO] [stderr]       Adding rand_hc v0.1.0 (latest: v0.3.2)
[INFO] [stderr]       Adding rand_isaac v0.1.1 (latest: v0.3.0)
[INFO] [stderr]       Adding rand_jitter v0.1.4 (latest: v0.4.0)
[INFO] [stderr]       Adding rand_os v0.1.3 (latest: v0.2.2)
[INFO] [stderr]       Adding rand_pcg v0.1.2 (latest: v0.3.1)
[INFO] [stderr]       Adding rand_xorshift v0.1.1 (latest: v0.3.0)
[INFO] [stderr]       Adding rdrand v0.4.0 (latest: v0.8.3)
[INFO] [stderr]       Adding rustc_version v0.2.3 (latest: v0.4.0)
[INFO] [stderr]       Adding scopeguard v0.3.3 (latest: v1.2.0)
[INFO] [stderr]       Adding semver v0.9.0 (latest: v1.0.22)
[INFO] [stderr]       Adding semver-parser v0.7.0 (latest: v0.10.2)
[INFO] [stderr]       Adding smallvec v0.6.14 (latest: v1.13.2)
[INFO] [stderr]       Adding syn v0.15.44 (latest: v2.0.58)
[INFO] [stderr]       Adding unicode-xid v0.1.0 (latest: v0.2.4)
[INFO] [stderr]       Adding version_check v0.1.5 (latest: v0.9.4)
[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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hotmic v0.8.2
[INFO] [stderr]   Downloaded lock_api v0.1.5
[INFO] [stderr]   Downloaded parking_lot_core v0.4.0
[INFO] [stderr]   Downloaded owning_ref v0.4.1
[INFO] [stderr]   Downloaded quanta v0.2.0
[INFO] [stderr]   Downloaded parking_lot v0.7.1
[INFO] [stderr]   Downloaded derivative v1.0.4
[INFO] [stderr]   Downloaded nom v4.2.3
[INFO] [stderr]   Downloaded crossbeam-channel v0.3.9
[INFO] [stderr]   Downloaded hdrhistogram v6.3.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 5d0cfee3033de2009e9d1141b8dce08a2f9eaf4521fe7de2148862afdf1792cd
[INFO] running `Command { std: "docker" "start" "-a" "5d0cfee3033de2009e9d1141b8dce08a2f9eaf4521fe7de2148862afdf1792cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5d0cfee3033de2009e9d1141b8dce08a2f9eaf4521fe7de2148862afdf1792cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d0cfee3033de2009e9d1141b8dce08a2f9eaf4521fe7de2148862afdf1792cd", kill_on_drop: false }`
[INFO] [stdout] 5d0cfee3033de2009e9d1141b8dce08a2f9eaf4521fe7de2148862afdf1792cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 87309a098ff151807bd30013640e3ad937659e4f62b073bc99246a73aa1556d8
[INFO] running `Command { std: "docker" "start" "-a" "87309a098ff151807bd30013640e3ad937659e4f62b073bc99246a73aa1556d8", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.2.0
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling crc32fast v1.4.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]     Checking owning_ref v0.4.1
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]     Checking futures v0.1.31
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]     Checking hashbrown v0.1.8
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking quanta v0.2.0
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking hdrhistogram v6.3.4
[INFO] [stderr]    Compiling derivative v1.0.4
[INFO] [stderr]     Checking hotmic v0.8.2
[INFO] [stderr]     Checking hotmic-stdout v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.27s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: hdrhistogram v6.3.4, nom v4.2.3
[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" "87309a098ff151807bd30013640e3ad937659e4f62b073bc99246a73aa1556d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87309a098ff151807bd30013640e3ad937659e4f62b073bc99246a73aa1556d8", kill_on_drop: false }`
[INFO] [stdout] 87309a098ff151807bd30013640e3ad937659e4f62b073bc99246a73aa1556d8