[INFO] cloning repository https://github.com/xautjzd/rust-learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xautjzd/rust-learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxautjzd%2Frust-learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxautjzd%2Frust-learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8600ce9c57f67f73fd6b09043b63dbf39ed1fd07
[INFO] checking xautjzd/rust-learning against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxautjzd%2Frust-learning" "/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/xautjzd/rust-learning
[INFO] finished tweaking git repo https://github.com/xautjzd/rust-learning
[INFO] tweaked toml for git repo https://github.com/xautjzd/rust-learning written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/xautjzd/rust-learning on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/xautjzd/rust-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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "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]     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-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7287c6174c221aef42c16025110977a41d33e787db6ff565735a9fa8c7f59d38
[INFO] running `Command { std: "docker" "start" "-a" "7287c6174c221aef42c16025110977a41d33e787db6ff565735a9fa8c7f59d38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7287c6174c221aef42c16025110977a41d33e787db6ff565735a9fa8c7f59d38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7287c6174c221aef42c16025110977a41d33e787db6ff565735a9fa8c7f59d38", kill_on_drop: false }`
[INFO] [stdout] 7287c6174c221aef42c16025110977a41d33e787db6ff565735a9fa8c7f59d38
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5964711dd7c4e5520611422899130a74421c5af1879a654c908a267ef6dc981
[INFO] running `Command { std: "docker" "start" "-a" "b5964711dd7c4e5520611422899130a74421c5af1879a654c908a267ef6dc981", 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]     Checking example-stdin v0.1.0 (/opt/rustwide/workdir/example-stdin)
[INFO] [stderr]     Checking example-file v0.1.0 (/opt/rustwide/workdir/example-file)
[INFO] [stderr]     Checking example-env v0.1.0 (/opt/rustwide/workdir/example-env)
[INFO] [stderr]     Checking example-enum v0.1.0 (/opt/rustwide/workdir/example-enum)
[INFO] [stderr]     Checking example-args v0.1.0 (/opt/rustwide/workdir/example-args)
[INFO] [stdout] error: env ZSH is unset.
[INFO] [stdout]   --> example-env/src/main.rs:16:15
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let zsh = env!("ZSH", "env ZSH is unset.");
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: env ZSH is unset.
[INFO] [stdout]   --> example-env/src/main.rs:16:15
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let zsh = env!("ZSH", "env ZSH is unset.");
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `example-env` (bin "example-env") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `example-env` (bin "example-env" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "b5964711dd7c4e5520611422899130a74421c5af1879a654c908a267ef6dc981", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5964711dd7c4e5520611422899130a74421c5af1879a654c908a267ef6dc981", kill_on_drop: false }`
[INFO] [stdout] b5964711dd7c4e5520611422899130a74421c5af1879a654c908a267ef6dc981