[INFO] cloning repository https://github.com/LSaldyt/carbon
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LSaldyt/carbon" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLSaldyt%2Fcarbon", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLSaldyt%2Fcarbon'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a00b787fbd8776f853cfb9a43c332ec3205f44e7
[INFO] checking LSaldyt/carbon against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLSaldyt%2Fcarbon" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LSaldyt/carbon 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 git repo https://github.com/LSaldyt/carbon
[INFO] finished tweaking git repo https://github.com/LSaldyt/carbon
[INFO] tweaked toml for git repo https://github.com/LSaldyt/carbon written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/LSaldyt/carbon 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded paste v1.0.4
[INFO] [stderr]   Downloaded pyo3-macros-backend v0.13.1
[INFO] [stderr]   Downloaded inventory-impl v0.1.10
[INFO] [stderr]   Downloaded inventory v0.1.10
[INFO] [stderr]   Downloaded indoc v1.0.3
[INFO] [stderr]   Downloaded ctor v0.1.19
[INFO] [stderr]   Downloaded ghost v0.1.2
[INFO] [stderr]   Downloaded pyo3-macros v0.13.1
[INFO] [stderr]   Downloaded statistical v1.0.0
[INFO] [stderr]   Downloaded pyo3 v0.13.1
[INFO] [stderr]   Downloaded libc v0.2.85
[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] dcfe58fc036700f4f91f7da618e278bd8ffe532c39500557749976f37e57693d
[INFO] running `Command { std: "docker" "start" "-a" "dcfe58fc036700f4f91f7da618e278bd8ffe532c39500557749976f37e57693d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dcfe58fc036700f4f91f7da618e278bd8ffe532c39500557749976f37e57693d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcfe58fc036700f4f91f7da618e278bd8ffe532c39500557749976f37e57693d", kill_on_drop: false }`
[INFO] [stdout] dcfe58fc036700f4f91f7da618e278bd8ffe532c39500557749976f37e57693d
[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] 560f4f39d9d6e888012ad80a7c40c99b30b2bdf27163ddf7bcc9771145e294d8
[INFO] running `Command { std: "docker" "start" "-a" "560f4f39d9d6e888012ad80a7c40c99b30b2bdf27163ddf7bcc9771145e294d8", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling libc v0.2.85
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]    Compiling inventory v0.1.10
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]     Checking parking_lot_core v0.8.2
[INFO] [stderr]     Checking rand_core v0.6.1
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling unindent v0.1.7
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]    Compiling pyo3 v0.13.1
[INFO] [stderr]    Compiling indoc v1.0.3
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]    Compiling paste v1.0.4
[INFO] [stderr]     Checking itertools v0.10.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking statistical v1.0.0
[INFO] [stderr]    Compiling pyo3-macros-backend v0.13.1
[INFO] [stderr]    Compiling ctor v0.1.19
[INFO] [stderr]    Compiling inventory-impl v0.1.10
[INFO] [stderr]    Compiling ghost v0.1.2
[INFO] [stderr]    Compiling pyo3-macros v0.13.1
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking ordered-float v2.10.0
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking carbon v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 35.53s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: pyo3 v0.13.1, pyo3-macros-backend v0.13.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "560f4f39d9d6e888012ad80a7c40c99b30b2bdf27163ddf7bcc9771145e294d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "560f4f39d9d6e888012ad80a7c40c99b30b2bdf27163ddf7bcc9771145e294d8", kill_on_drop: false }`
[INFO] [stdout] 560f4f39d9d6e888012ad80a7c40c99b30b2bdf27163ddf7bcc9771145e294d8