[INFO] cloning repository https://github.com/guo40020/learning-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/guo40020/learning-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguo40020%2Flearning-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguo40020%2Flearning-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f6f6be4caa7b5d7d9b9f30891a8ffebe4a909d94
[INFO] building guo40020/learning-rust against master#ad211ced81509462cdfe4c29ed10f97279a0acae for pr-135216
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguo40020%2Flearning-rust" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/guo40020/learning-rust on toolchain ad211ced81509462cdfe4c29ed10f97279a0acae
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/guo40020/learning-rust
[INFO] finished tweaking git repo https://github.com/guo40020/learning-rust
[INFO] tweaked toml for git repo https://github.com/guo40020/learning-rust written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/guo40020/learning-rust 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" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 15e7808fea06e75d84c9ffc52fd6416ca87c4e009d00056b8af778ff90dae0b8
[INFO] running `Command { std: "docker" "start" "-a" "15e7808fea06e75d84c9ffc52fd6416ca87c4e009d00056b8af778ff90dae0b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15e7808fea06e75d84c9ffc52fd6416ca87c4e009d00056b8af778ff90dae0b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15e7808fea06e75d84c9ffc52fd6416ca87c4e009d00056b8af778ff90dae0b8", kill_on_drop: false }`
[INFO] [stdout] 15e7808fea06e75d84c9ffc52fd6416ca87c4e009d00056b8af778ff90dae0b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] edacd6ba31b0f820bc8c678418e52e569733f96bf6febf3b878804a4dc6956b0
[INFO] running `Command { std: "docker" "start" "-a" "edacd6ba31b0f820bc8c678418e52e569733f96bf6febf3b878804a4dc6956b0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.129
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling serde v1.0.129
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling instant v0.1.10
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling slab v0.4.4
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling lock_api v0.4.4
[INFO] [stderr]    Compiling argh_shared v0.1.5
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling inotify-sys v0.1.5
[INFO] [stderr]    Compiling terminal_size v0.1.17
[INFO] [stderr]    Compiling termios v0.3.3
[INFO] [stderr]    Compiling clicolors-control v1.0.1
[INFO] [stderr]    Compiling filetime v0.2.15
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling inotify v0.7.1
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling number_prefix v0.2.8
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling mio-extras v2.0.6
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling notify v4.0.17
[INFO] [stderr]    Compiling argh_derive v0.1.5
[INFO] [stderr]    Compiling console v0.14.1
[INFO] [stderr]    Compiling console v0.7.7
[INFO] [stderr]    Compiling indicatif v0.10.3
[INFO] [stderr]    Compiling argh v0.1.5
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling rustlings v4.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.75s
[INFO] running `Command { std: "docker" "inspect" "edacd6ba31b0f820bc8c678418e52e569733f96bf6febf3b878804a4dc6956b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "edacd6ba31b0f820bc8c678418e52e569733f96bf6febf3b878804a4dc6956b0", kill_on_drop: false }`
[INFO] [stdout] edacd6ba31b0f820bc8c678418e52e569733f96bf6febf3b878804a4dc6956b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9eaf392951882d2b36691e469cb1dca180365c83748adf9a84bc7486c8ed6897
[INFO] running `Command { std: "docker" "start" "-a" "9eaf392951882d2b36691e469cb1dca180365c83748adf9a84bc7486c8ed6897", kill_on_drop: false }`
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]    Compiling escargot v0.4.0
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling predicates-core v1.0.2
[INFO] [stderr]    Compiling float-cmp v0.8.0
[INFO] [stderr]    Compiling normalize-line-endings v0.3.0
[INFO] [stderr]    Compiling difference v2.0.0
[INFO] [stderr]    Compiling treeline v0.1.0
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling predicates-tree v1.0.3
[INFO] [stderr]    Compiling predicates v1.0.8
[INFO] [stderr]    Compiling assert_cmd v0.11.1
[INFO] [stderr]    Compiling rustlings v4.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 4.79s
[INFO] running `Command { std: "docker" "inspect" "9eaf392951882d2b36691e469cb1dca180365c83748adf9a84bc7486c8ed6897", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9eaf392951882d2b36691e469cb1dca180365c83748adf9a84bc7486c8ed6897", kill_on_drop: false }`
[INFO] [stdout] 9eaf392951882d2b36691e469cb1dca180365c83748adf9a84bc7486c8ed6897