[INFO] cloning repository https://github.com/alexsednz/learn-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alexsednz/learn-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexsednz%2Flearn-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexsednz%2Flearn-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 731fad993184a4cec7aa96e7eebbce8cf5e206ff
[INFO] checking alexsednz/learn-rust against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexsednz%2Flearn-rust" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alexsednz/learn-rust on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/alexsednz/learn-rust
[INFO] finished tweaking git repo https://github.com/alexsednz/learn-rust
[INFO] tweaked toml for git repo https://github.com/alexsednz/learn-rust written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/alexsednz/learn-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6ece8cd03953ef1d1bcbaffe7f5efef520431099b7119f98e30ef870fd62bc00
[INFO] running `Command { std: "docker" "start" "-a" "6ece8cd03953ef1d1bcbaffe7f5efef520431099b7119f98e30ef870fd62bc00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ece8cd03953ef1d1bcbaffe7f5efef520431099b7119f98e30ef870fd62bc00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ece8cd03953ef1d1bcbaffe7f5efef520431099b7119f98e30ef870fd62bc00", kill_on_drop: false }`
[INFO] [stdout] 6ece8cd03953ef1d1bcbaffe7f5efef520431099b7119f98e30ef870fd62bc00
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 897e2613040b118c962f692c62f4185fd333a232fe239b41a983fbc7456e0725
[INFO] running `Command { std: "docker" "start" "-a" "897e2613040b118c962f692c62f4185fd333a232fe239b41a983fbc7456e0725", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]     Checking learn-general-rust v0.1.0 (/opt/rustwide/workdir/learn-general-rust)
[INFO] [stdout] warning: field is never read: `m1`
[INFO] [stdout]   --> learn-general-rust/src/look_ahead.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 48 |     m1: BM1,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `m2`
[INFO] [stdout]   --> learn-general-rust/src/look_ahead.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 49 |     m2: String,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `m1`
[INFO] [stdout]   --> learn-general-rust/src/look_ahead.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 48 |     m1: BM1,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `m2`
[INFO] [stdout]   --> learn-general-rust/src/look_ahead.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 49 |     m2: String,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]     Checking learn-proc-macro v0.1.0 (/opt/rustwide/workdir/learn-proc-macro)
[INFO] [stdout] attr: ""
[INFO] [stdout] item: "pub fn invoke1() { }"
[INFO] [stdout] attr: "bar"
[INFO] [stdout] item: "pub fn invoke2() { }"
[INFO] [stdout] attr: "multiple => tokens"
[INFO] [stdout] item: "pub fn invoke3() { }"
[INFO] [stdout] attr: "delimiters"
[INFO] [stdout] item: "pub fn invoke4() { }"
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.22s
[INFO] running `Command { std: "docker" "inspect" "897e2613040b118c962f692c62f4185fd333a232fe239b41a983fbc7456e0725", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "897e2613040b118c962f692c62f4185fd333a232fe239b41a983fbc7456e0725", kill_on_drop: false }`
[INFO] [stdout] 897e2613040b118c962f692c62f4185fd333a232fe239b41a983fbc7456e0725