[INFO] cloning repository https://github.com/beni69/mentordl
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/beni69/mentordl" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbeni69%2Fmentordl", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbeni69%2Fmentordl'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9977f4bd36f585da7a5c5434ebe55871626e2aa8
[INFO] checking beni69/mentordl against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbeni69%2Fmentordl" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/beni69/mentordl 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/beni69/mentordl
[INFO] finished tweaking git repo https://github.com/beni69/mentordl
[INFO] tweaked toml for git repo https://github.com/beni69/mentordl written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/beni69/mentordl 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]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded polling v2.2.0
[INFO] [stderr]   Downloaded cache-padded v1.2.0
[INFO] [stderr]   Downloaded fastrand v1.6.0
[INFO] [stderr]   Downloaded wepoll-ffi v0.1.2
[INFO] [stderr]   Downloaded futures-lite v1.12.0
[INFO] [stderr]   Downloaded clap_derive v3.0.0-rc.9
[INFO] [stderr]   Downloaded curl v0.4.41
[INFO] [stderr]   Downloaded clap v3.0.0-rc.9
[INFO] [stderr]   Downloaded isahc v1.6.0
[INFO] [stderr]   Downloaded curl-sys v0.4.51+curl-7.80.0
[INFO] [stderr]   Downloaded libnghttp2-sys v0.1.7+1.45.0
[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] a34e170b2b5677a2ea1e002bfecb8fa4fce388e47d6c553132d0496d50333e3d
[INFO] running `Command { std: "docker" "start" "-a" "a34e170b2b5677a2ea1e002bfecb8fa4fce388e47d6c553132d0496d50333e3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a34e170b2b5677a2ea1e002bfecb8fa4fce388e47d6c553132d0496d50333e3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a34e170b2b5677a2ea1e002bfecb8fa4fce388e47d6c553132d0496d50333e3d", kill_on_drop: false }`
[INFO] [stdout] a34e170b2b5677a2ea1e002bfecb8fa4fce388e47d6c553132d0496d50333e3d
[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] 943ddfbe25ded98f413c3ea83f268ae75516fea24a75b0f86c10b8bca79dd6fe
[INFO] running `Command { std: "docker" "start" "-a" "943ddfbe25ded98f413c3ea83f268ae75516fea24a75b0f86c10b8bca79dd6fe", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling syn v1.0.84
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling futures-core v0.3.19
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]     Checking cache-padded v1.2.0
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking tracing-core v0.1.21
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]     Checking futures-io v0.3.19
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.7+1.45.0
[INFO] [stderr]    Compiling libz-sys v1.1.3
[INFO] [stderr]    Compiling openssl-sys v0.9.72
[INFO] [stderr]    Compiling curl-sys v0.4.51+curl-7.80.0
[INFO] [stderr]    Compiling curl v0.4.41
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling encoding_rs v0.8.30
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]    Compiling serde v1.0.132
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking async-channel v1.6.1
[INFO] [stderr]     Checking socket2 v0.4.2
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.132
[INFO] [stderr]    Compiling isahc v1.6.0
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking fastrand v1.6.0
[INFO] [stderr]     Checking openssl-probe v0.1.4
[INFO] [stderr]     Checking futures-lite v1.12.0
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking http v0.2.5
[INFO] [stderr]     Checking sluice v0.5.5
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking polling v2.2.0
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]     Checking castaway v0.1.2
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]     Checking dirs v4.0.0
[INFO] [stderr]     Checking pretty_env_logger v0.4.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.18
[INFO] [stderr]    Compiling pin-project-internal v1.0.9
[INFO] [stderr]    Compiling clap_derive v3.0.0-rc.9
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking tracing v0.1.29
[INFO] [stderr]     Checking pin-project v1.0.9
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]     Checking clap v3.0.0-rc.9
[INFO] [stderr]     Checking mentordl v1.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 01s
[INFO] running `Command { std: "docker" "inspect" "943ddfbe25ded98f413c3ea83f268ae75516fea24a75b0f86c10b8bca79dd6fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "943ddfbe25ded98f413c3ea83f268ae75516fea24a75b0f86c10b8bca79dd6fe", kill_on_drop: false }`
[INFO] [stdout] 943ddfbe25ded98f413c3ea83f268ae75516fea24a75b0f86c10b8bca79dd6fe
[INFO] checking beni69/mentordl against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbeni69%2Fmentordl" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/beni69/mentordl on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/beni69/mentordl
[INFO] finished tweaking git repo https://github.com/beni69/mentordl
[INFO] tweaked toml for git repo https://github.com/beni69/mentordl written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/beni69/mentordl 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bb29c4158eae64dd75bbc4f465bcdd8c6a932c563715d2d0118f985b44456be6
[INFO] running `Command { std: "docker" "start" "-a" "bb29c4158eae64dd75bbc4f465bcdd8c6a932c563715d2d0118f985b44456be6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb29c4158eae64dd75bbc4f465bcdd8c6a932c563715d2d0118f985b44456be6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb29c4158eae64dd75bbc4f465bcdd8c6a932c563715d2d0118f985b44456be6", kill_on_drop: false }`
[INFO] [stdout] bb29c4158eae64dd75bbc4f465bcdd8c6a932c563715d2d0118f985b44456be6
[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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b40641e7e0ff788bcdc3e7a03c7c6d52c0d6931858d522ec4b19f8e3a5d9b28e
[INFO] running `Command { std: "docker" "start" "-a" "b40641e7e0ff788bcdc3e7a03c7c6d52c0d6931858d522ec4b19f8e3a5d9b28e", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling syn v1.0.84
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling futures-core v0.3.19
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking cache-padded v1.2.0
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking tracing-core v0.1.21
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling libz-sys v1.1.3
[INFO] [stderr]    Compiling openssl-sys v0.9.72
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.7+1.45.0
[INFO] [stderr]    Compiling curl-sys v0.4.51+curl-7.80.0
[INFO] [stderr]    Compiling curl v0.4.41
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling encoding_rs v0.8.30
[INFO] [stderr]     Checking futures-io v0.3.19
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling serde v1.0.132
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking async-channel v1.6.1
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking socket2 v0.4.2
[INFO] [stderr]    Compiling serde_derive v1.0.132
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking openssl-probe v0.1.4
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking fastrand v1.6.0
[INFO] [stderr]    Compiling isahc v1.6.0
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking futures-lite v1.12.0
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking http v0.2.5
[INFO] [stderr]     Checking sluice v0.5.5
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking polling v2.2.0
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]     Checking castaway v0.1.2
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]     Checking dirs v4.0.0
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking pretty_env_logger v0.4.0
[INFO] [stderr]    Compiling pin-project-internal v1.0.9
[INFO] [stderr]    Compiling tracing-attributes v0.1.18
[INFO] [stderr]    Compiling clap_derive v3.0.0-rc.9
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking tracing v0.1.29
[INFO] [stderr]     Checking pin-project v1.0.9
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]     Checking clap v3.0.0-rc.9
[INFO] [stderr]     Checking mentordl v1.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 54.31s
[INFO] running `Command { std: "docker" "inspect" "b40641e7e0ff788bcdc3e7a03c7c6d52c0d6931858d522ec4b19f8e3a5d9b28e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b40641e7e0ff788bcdc3e7a03c7c6d52c0d6931858d522ec4b19f8e3a5d9b28e", kill_on_drop: false }`
[INFO] [stdout] b40641e7e0ff788bcdc3e7a03c7c6d52c0d6931858d522ec4b19f8e3a5d9b28e