[INFO] cloning repository https://github.com/arons/RustPlaygound
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/arons/RustPlaygound" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farons%2FRustPlaygound", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farons%2FRustPlaygound'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e1a84b400d75127d0db2db3fe0deff41b85803d1
[INFO] checking arons/RustPlaygound against master#fe55364329579d361b1ab565728bc033a7dba07e for pr-146013
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farons%2FRustPlaygound" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/arons/RustPlaygound
[INFO] finished tweaking git repo https://github.com/arons/RustPlaygound
[INFO] tweaked toml for git repo https://github.com/arons/RustPlaygound written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/arons/RustPlaygound on toolchain fe55364329579d361b1ab565728bc033a7dba07e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fe55364329579d361b1ab565728bc033a7dba07e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/arons/RustPlaygound 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" "+fe55364329579d361b1ab565728bc033a7dba07e" "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 checked_int_cast v1.0.0
[INFO] [stderr]   Downloaded qrcode v0.11.2
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+fe55364329579d361b1ab565728bc033a7dba07e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0ae19da9d0f3e508bbacd697fa4c145d49cebe308403b70ac6f522268738962f
[INFO] running `Command { std: "docker" "start" "-a" "0ae19da9d0f3e508bbacd697fa4c145d49cebe308403b70ac6f522268738962f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ae19da9d0f3e508bbacd697fa4c145d49cebe308403b70ac6f522268738962f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ae19da9d0f3e508bbacd697fa4c145d49cebe308403b70ac6f522268738962f", kill_on_drop: false }`
[INFO] [stdout] 0ae19da9d0f3e508bbacd697fa4c145d49cebe308403b70ac6f522268738962f
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+fe55364329579d361b1ab565728bc033a7dba07e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17e9a7d8d40c094d31be011fe95cc73c05e5522642897bd74a53268c2c52b63f
[INFO] running `Command { std: "docker" "start" "-a" "17e9a7d8d40c094d31be011fe95cc73c05e5522642897bd74a53268c2c52b63f", 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 autocfg v1.1.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling crossbeam-utils v0.8.12
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.11
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking checked_int_cast v1.0.0
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking num_cpus v1.14.0
[INFO] [stderr]     Checking gif v0.10.3
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking png v0.15.3
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking add_one v0.1.0 (/opt/rustwide/workdir/add_one)
[INFO] [stderr]     Checking lesson v0.1.0 (/opt/rustwide/workdir/lesson)
[INFO] [stderr]     Checking adder v0.1.0 (/opt/rustwide/workdir/adder)
[INFO] [stderr]     Checking tiff v0.3.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking image v0.22.5
[INFO] [stderr] error: could not compile `image` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   could not execute process `/opt/rustwide/rustup-home/toolchains/fe55364329579d361b1ab565728bc033a7dba07e/bin/rustc --crate-name image --edition=2015 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/image-0.22.5/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="bmp"' --cfg 'feature="default"' --cfg 'feature="dxt"' --cfg 'feature="gif"' --cfg 'feature="gif_codec"' --cfg 'feature="hdr"' --cfg 'feature="ico"' --cfg 'feature="jpeg"' --cfg 'feature="jpeg-decoder"' --cfg 'feature="jpeg_rayon"' --cfg 'feature="png"' --cfg 'feature="png_codec"' --cfg 'feature="pnm"' --cfg 'feature="scoped_threadpool"' --cfg 'feature="tga"' --cfg 'feature="tiff"' --cfg 'feature="webp"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("benchmarks", "bmp", "default", "dxt", "gif", "gif_codec", "hdr", "ico", "jpeg", "jpeg-decoder", "jpeg_rayon", "png", "png_codec", "pnm", "scoped_threadpool", "tga", "tiff", "webp"))' -C metadata=81d853d549192668 -C extra-filename=-babf92a07c7180c8 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-9317715aee3bde63.rmeta --extern gif=/opt/rustwide/target/debug/deps/libgif-d25c0f4f31e8f7b2.rmeta --extern jpeg_decoder=/opt/rustwide/target/debug/deps/libjpeg_decoder-ec2e444eb1041bf9.rmeta --extern num_iter=/opt/rustwide/target/debug/deps/libnum_iter-81ca53c1c23ec8f5.rmeta --extern num_rational=/opt/rustwide/target/debug/deps/libnum_rational-f01fca4e7798ef8a.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-f2828a4a4b29aee1.rmeta --extern png=/opt/rustwide/target/debug/deps/libpng-c120c6a0421dd7ec.rmeta --extern scoped_threadpool=/opt/rustwide/target/debug/deps/libscoped_threadpool-7ebdf004305727b6.rmeta --extern tiff=/opt/rustwide/target/debug/deps/libtiff-dcac6f89b40e4910.rmeta --cap-lints allow --cap-lints=forbid` (never executed)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No such file or directory (os error 2)
[INFO] running `Command { std: "docker" "inspect" "17e9a7d8d40c094d31be011fe95cc73c05e5522642897bd74a53268c2c52b63f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17e9a7d8d40c094d31be011fe95cc73c05e5522642897bd74a53268c2c52b63f", kill_on_drop: false }`
[INFO] [stdout] 17e9a7d8d40c094d31be011fe95cc73c05e5522642897bd74a53268c2c52b63f