[INFO] cloning repository https://github.com/wy15/learnrust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wy15/learnrust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwy15%2Flearnrust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwy15%2Flearnrust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f6b0739405e073b6dfaf46983708ebfd32d7222a
[INFO] checking wy15/learnrust against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwy15%2Flearnrust" "/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/wy15/learnrust 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/wy15/learnrust
[INFO] finished tweaking git repo https://github.com/wy15/learnrust
[INFO] tweaked toml for git repo https://github.com/wy15/learnrust written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/wy15/learnrust 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] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde-pickle v1.1.0
[INFO] [stderr]   Downloaded flume v0.10.11
[INFO] [stderr]   Downloaded image v0.24.1
[INFO] [stderr]   Downloaded iter-read v0.3.1
[INFO] [stderr]   Downloaded jpeg-decoder v0.2.2
[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] 1a6a3f1c2a6f30ede4f481b4981b430332cacf10efa8b96a20cf38caef512191
[INFO] running `Command { std: "docker" "start" "-a" "1a6a3f1c2a6f30ede4f481b4981b430332cacf10efa8b96a20cf38caef512191", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a6a3f1c2a6f30ede4f481b4981b430332cacf10efa8b96a20cf38caef512191", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a6a3f1c2a6f30ede4f481b4981b430332cacf10efa8b96a20cf38caef512191", kill_on_drop: false }`
[INFO] [stdout] 1a6a3f1c2a6f30ede4f481b4981b430332cacf10efa8b96a20cf38caef512191
[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] 9c91325a24362f47bc0db557d31f13105eece66d3f86808a869f53bcacafd9a3
[INFO] running `Command { std: "docker" "start" "-a" "9c91325a24362f47bc0db557d31f13105eece66d3f86808a869f53bcacafd9a3", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.7
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking http v0.2.6
[INFO] [stderr]     Checking tracing-core v0.1.22
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]    Compiling httparse v1.6.0
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.7
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking mio v0.8.0
[INFO] [stderr]     Checking openssl-probe v0.1.5
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]     Checking tracing v0.1.31
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]    Compiling openssl-sys v0.9.72
[INFO] [stderr]     Checking tokio v1.17.0
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]    Compiling encoding_rs v0.8.30
[INFO] [stderr]     Checking httpdate v1.0.2
[INFO] [stderr]    Compiling bzip2-sys v0.1.11+1.0.8
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.2
[INFO] [stderr]     Checking getrandom v0.2.5
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking nanorand v0.6.1
[INFO] [stderr]     Checking deflate v1.0.0
[INFO] [stderr]     Checking spin v0.9.2
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking ipnet v2.3.1
[INFO] [stderr]     Checking iter-read v0.3.1
[INFO] [stderr]     Checking weezl v0.1.5
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking http-body v0.4.4
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking miniz_oxide v0.5.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking lebe v0.5.1
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking bit_field v0.10.1
[INFO] [stderr]     Checking gif v0.11.3
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking tiff v0.7.1
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking png v0.17.5
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking bytemuck v1.8.0
[INFO] [stderr]     Checking bzip2 v0.4.3
[INFO] [stderr]     Checking challenge2 v0.1.0 (/opt/rustwide/workdir/challenge2)
[INFO] [stderr]     Checking challenge1 v0.1.0 (/opt/rustwide/workdir/challenge1)
[INFO] [stderr]     Checking serde-pickle v1.1.0
[INFO] [stderr]     Checking tokio-util v0.6.9
[INFO] [stderr]     Checking challenge8 v0.1.0 (/opt/rustwide/workdir/challenge8)
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking h2 v0.3.11
[INFO] [stderr]     Checking jpeg-decoder v0.2.2
[INFO] [stderr]    Compiling pin-project-internal v1.0.10
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking challenge3 v0.1.0 (/opt/rustwide/workdir/challenge3)
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking pin-project v1.0.10
[INFO] [stderr]     Checking zip v0.5.13
[INFO] [stderr]     Checking flume v0.10.11
[INFO] [stderr]     Checking exr v1.4.1
[INFO] [stderr]     Checking challenge6 v0.1.0 (/opt/rustwide/workdir/challenge6)
[INFO] [stderr]     Checking hyper v0.14.17
[INFO] [stderr]     Checking image v0.24.1
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.9
[INFO] [stderr]     Checking challenge5 v0.1.0 (/opt/rustwide/workdir/challenge5)
[INFO] [stderr]     Checking challenge4 v0.1.0 (/opt/rustwide/workdir/challenge4)
[INFO] [stderr]     Checking challenge7 v0.1.0 (/opt/rustwide/workdir/challenge7)
[INFO] [stderr]     Checking challenge v0.1.0 (/opt/rustwide/workdir/challenge)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.26s
[INFO] running `Command { std: "docker" "inspect" "9c91325a24362f47bc0db557d31f13105eece66d3f86808a869f53bcacafd9a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c91325a24362f47bc0db557d31f13105eece66d3f86808a869f53bcacafd9a3", kill_on_drop: false }`
[INFO] [stdout] 9c91325a24362f47bc0db557d31f13105eece66d3f86808a869f53bcacafd9a3
[INFO] checking wy15/learnrust against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwy15%2Flearnrust" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wy15/learnrust 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/wy15/learnrust
[INFO] finished tweaking git repo https://github.com/wy15/learnrust
[INFO] tweaked toml for git repo https://github.com/wy15/learnrust written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/wy15/learnrust 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] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 2dcde9f3285828535f8cb88784c0853b456b103087e74114d996e8d3e52d2ca9
[INFO] running `Command { std: "docker" "start" "-a" "2dcde9f3285828535f8cb88784c0853b456b103087e74114d996e8d3e52d2ca9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2dcde9f3285828535f8cb88784c0853b456b103087e74114d996e8d3e52d2ca9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2dcde9f3285828535f8cb88784c0853b456b103087e74114d996e8d3e52d2ca9", kill_on_drop: false }`
[INFO] [stdout] 2dcde9f3285828535f8cb88784c0853b456b103087e74114d996e8d3e52d2ca9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] ba9d45987961cbbcf30f25a7d58b23ad099dfcc169c725973aba1dc677bb623f
[INFO] running `Command { std: "docker" "start" "-a" "ba9d45987961cbbcf30f25a7d58b23ad099dfcc169c725973aba1dc677bb623f", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.7
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking http v0.2.6
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking tracing-core v0.1.22
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.7
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]    Compiling httparse v1.6.0
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]     Checking tracing v0.1.31
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking mio v0.8.0
[INFO] [stderr]     Checking openssl-probe v0.1.5
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]     Checking tokio v1.17.0
[INFO] [stderr]    Compiling encoding_rs v0.8.30
[INFO] [stderr]    Compiling openssl-sys v0.9.72
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]     Checking httpdate v1.0.2
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]    Compiling bzip2-sys v0.1.11+1.0.8
[INFO] [stderr]     Checking getrandom v0.2.5
[INFO] [stderr]     Checking crossbeam-channel v0.5.2
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking nanorand v0.6.1
[INFO] [stderr]     Checking spin v0.9.2
[INFO] [stderr]     Checking deflate v1.0.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]     Checking http-body v0.4.4
[INFO] [stderr]     Checking iter-read v0.3.1
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking weezl v0.1.5
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking ipnet v2.3.1
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking miniz_oxide v0.5.1
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking lebe v0.5.1
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking bit_field v0.10.1
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking gif v0.11.3
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking png v0.17.5
[INFO] [stderr]     Checking bzip2 v0.4.3
[INFO] [stderr]     Checking bytemuck v1.8.0
[INFO] [stderr]     Checking tiff v0.7.1
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking challenge1 v0.1.0 (/opt/rustwide/workdir/challenge1)
[INFO] [stderr]     Checking challenge2 v0.1.0 (/opt/rustwide/workdir/challenge2)
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking serde-pickle v1.1.0
[INFO] [stderr]     Checking jpeg-decoder v0.2.2
[INFO] [stderr]     Checking challenge8 v0.1.0 (/opt/rustwide/workdir/challenge8)
[INFO] [stderr]     Checking tokio-util v0.6.9
[INFO] [stderr]     Checking h2 v0.3.11
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]    Compiling pin-project-internal v1.0.10
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking challenge3 v0.1.0 (/opt/rustwide/workdir/challenge3)
[INFO] [stderr]     Checking pin-project v1.0.10
[INFO] [stderr]     Checking flume v0.10.11
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking zip v0.5.13
[INFO] [stderr]     Checking hyper v0.14.17
[INFO] [stderr]     Checking exr v1.4.1
[INFO] [stderr]     Checking challenge6 v0.1.0 (/opt/rustwide/workdir/challenge6)
[INFO] [stderr]     Checking image v0.24.1
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.9
[INFO] [stderr]     Checking challenge4 v0.1.0 (/opt/rustwide/workdir/challenge4)
[INFO] [stderr]     Checking challenge5 v0.1.0 (/opt/rustwide/workdir/challenge5)
[INFO] [stderr]     Checking challenge7 v0.1.0 (/opt/rustwide/workdir/challenge7)
[INFO] [stderr]     Checking challenge v0.1.0 (/opt/rustwide/workdir/challenge)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.62s
[INFO] running `Command { std: "docker" "inspect" "ba9d45987961cbbcf30f25a7d58b23ad099dfcc169c725973aba1dc677bb623f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba9d45987961cbbcf30f25a7d58b23ad099dfcc169c725973aba1dc677bb623f", kill_on_drop: false }`
[INFO] [stdout] ba9d45987961cbbcf30f25a7d58b23ad099dfcc169c725973aba1dc677bb623f