[INFO] cloning repository https://github.com/regnskali/Learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/regnskali/Learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fregnskali%2FLearning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fregnskali%2FLearning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7a087a5ddc77eda5befc32b457f548a97fbe05ec
[INFO] checking regnskali/Learning against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fregnskali%2FLearning" "/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/regnskali/Learning
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/regnskali/Learning
[INFO] tweaked toml for git repo https://github.com/regnskali/Learning written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/regnskali/Learning on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/regnskali/Learning 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded linked-hash-map v0.5.6
[INFO] [stderr]   Downloaded safemem v0.3.3
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.4.32
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.82
[INFO] [stderr]   Downloaded jsonxf v1.1.1
[INFO] [stderr]   Downloaded line-wrap v0.1.1
[INFO] [stderr]   Downloaded clap_derive v3.2.15
[INFO] [stderr]   Downloaded colored v2.0.0
[INFO] [stderr]   Downloaded ryu v1.0.11
[INFO] [stderr]   Downloaded anyhow v1.0.60
[INFO] [stderr]   Downloaded indexmap v1.9.1
[INFO] [stderr]   Downloaded js-sys v0.3.59
[INFO] [stderr]   Downloaded time v0.3.12
[INFO] [stderr]   Downloaded unicode-normalization v0.1.21
[INFO] [stderr]   Downloaded serde_json v1.0.83
[INFO] [stderr]   Downloaded serde_derive v1.0.142
[INFO] [stderr]   Downloaded clap v3.2.16
[INFO] [stderr]   Downloaded hyper v0.14.20
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.82
[INFO] [stderr]   Downloaded serde v1.0.142
[INFO] [stderr]   Downloaded rustls-pemfile v1.0.1
[INFO] [stderr]   Downloaded webpki-roots v0.22.4
[INFO] [stderr]   Downloaded bytes v1.2.1
[INFO] [stderr]   Downloaded mio v0.8.4
[INFO] [stderr]   Downloaded os_str_bytes v6.2.0
[INFO] [stderr]   Downloaded getopts v0.2.21
[INFO] [stderr]   Downloaded onig v6.3.2
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.82
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.82
[INFO] [stderr]   Downloaded plist v1.3.1
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.82
[INFO] [stderr]   Downloaded itoa v1.0.3
[INFO] [stderr]   Downloaded once_cell v1.13.0
[INFO] [stderr]   Downloaded libc v0.2.127
[INFO] [stderr]   Downloaded tokio v1.20.1
[INFO] [stderr]   Downloaded onig_sys v69.8.0
[INFO] [stderr]   Downloaded web-sys v0.3.59
[INFO] [stderr]   Downloaded syntect v4.6.0
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 673b4b83fec7aec5387af786b2b6d50c61e04e095120da520362ab9a201a2df1
[INFO] running `Command { std: "docker" "start" "-a" "673b4b83fec7aec5387af786b2b6d50c61e04e095120da520362ab9a201a2df1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "673b4b83fec7aec5387af786b2b6d50c61e04e095120da520362ab9a201a2df1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "673b4b83fec7aec5387af786b2b6d50c61e04e095120da520362ab9a201a2df1", kill_on_drop: false }`
[INFO] [stdout] 673b4b83fec7aec5387af786b2b6d50c61e04e095120da520362ab9a201a2df1
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 397f650f0f97f5ff54e358d5c7f658ee9223ee7062353c35e4f7e42c7b7ca848
[INFO] running `Command { std: "docker" "start" "-a" "397f650f0f97f5ff54e358d5c7f658ee9223ee7062353c35e4f7e42c7b7ca848", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.127
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]     Checking once_cell v1.13.0
[INFO] [stderr]     Checking itoa v1.0.3
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]     Checking bytes v1.2.1
[INFO] [stderr]    Compiling tokio v1.20.1
[INFO] [stderr]    Compiling serde v1.0.142
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]    Compiling rustls v0.20.6
[INFO] [stderr]    Compiling httparse v1.7.1
[INFO] [stderr]     Checking futures-util v0.3.21
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]    Compiling serde_json v1.0.83
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking tracing-core v0.1.29
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]     Checking tower-service v0.3.2
[INFO] [stderr]     Checking num_threads v0.1.6
[INFO] [stderr]     Checking unicode-bidi v0.3.8
[INFO] [stderr]    Compiling encoding_rs v0.8.31
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking tracing v0.1.36
[INFO] [stderr]    Compiling serde_derive v1.0.142
[INFO] [stderr]     Checking http v0.2.8
[INFO] [stderr]     Checking line-wrap v0.1.1
[INFO] [stderr]     Checking os_str_bytes v6.2.0
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking miniz_oxide v0.5.3
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling anyhow v1.0.60
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking xml-rs v0.8.4
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]    Compiling onig_sys v69.8.0
[INFO] [stderr]     Checking rustls-pemfile v1.0.1
[INFO] [stderr]     Checking parking_lot_core v0.9.3
[INFO] [stderr]     Checking ring v0.16.20
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking mio v0.8.4
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking time v0.3.12
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking flate2 v1.0.24
[INFO] [stderr]     Checking http-body v0.4.5
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking ipnet v2.5.0
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking jsonxf v1.1.1
[INFO] [stderr]     Checking unicode-normalization v0.1.21
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking webpki v0.22.0
[INFO] [stderr]     Checking sct v0.7.0
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking webpki-roots v0.22.4
[INFO] [stderr]     Checking plist v1.3.1
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]    Compiling clap_derive v3.2.15
[INFO] [stderr]     Checking clap v3.2.16
[INFO] [stderr]     Checking onig v6.3.2
[INFO] [stderr]     Checking syntect v4.6.0
[INFO] [stderr]     Checking tokio-util v0.7.3
[INFO] [stderr]     Checking tokio-rustls v0.23.4
[INFO] [stderr]     Checking h2 v0.3.13
[INFO] [stderr]     Checking hyper v0.14.20
[INFO] [stderr]     Checking hyper-rustls v0.23.0
[INFO] [stderr]     Checking reqwest v0.11.11
[INFO] [stderr]     Checking httpie v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 31.16s
[INFO] running `Command { std: "docker" "inspect" "397f650f0f97f5ff54e358d5c7f658ee9223ee7062353c35e4f7e42c7b7ca848", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "397f650f0f97f5ff54e358d5c7f658ee9223ee7062353c35e4f7e42c7b7ca848", kill_on_drop: false }`
[INFO] [stdout] 397f650f0f97f5ff54e358d5c7f658ee9223ee7062353c35e4f7e42c7b7ca848