[INFO] cloning repository https://github.com/killercup/rust-proc-macro-test-linking-error
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/killercup/rust-proc-macro-test-linking-error" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkillercup%2Frust-proc-macro-test-linking-error", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkillercup%2Frust-proc-macro-test-linking-error'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c3fc7c16a245e6162fc0eb75ca170150242d6518
[INFO] checking killercup/rust-proc-macro-test-linking-error against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkillercup%2Frust-proc-macro-test-linking-error" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/killercup/rust-proc-macro-test-linking-error on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/killercup/rust-proc-macro-test-linking-error
[INFO] finished tweaking git repo https://github.com/killercup/rust-proc-macro-test-linking-error
[INFO] tweaked toml for git repo https://github.com/killercup/rust-proc-macro-test-linking-error written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/killercup/rust-proc-macro-test-linking-error already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 61ba8e9600c23dcf2c16e1cc482322f31021443da7f3832a93d61b4ebadd5b47
[INFO] running `Command { std: "docker" "start" "-a" "61ba8e9600c23dcf2c16e1cc482322f31021443da7f3832a93d61b4ebadd5b47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "61ba8e9600c23dcf2c16e1cc482322f31021443da7f3832a93d61b4ebadd5b47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61ba8e9600c23dcf2c16e1cc482322f31021443da7f3832a93d61b4ebadd5b47", kill_on_drop: false }`
[INFO] [stdout] 61ba8e9600c23dcf2c16e1cc482322f31021443da7f3832a93d61b4ebadd5b47
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fc4201293c05acc41757383ee5b68e5e10392600aa5722cf6a9c16e7cc74955e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fc4201293c05acc41757383ee5b68e5e10392600aa5722cf6a9c16e7cc74955e", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling regex v1.1.7
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking regex-syntax v0.6.7
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling aho-corasick v0.7.3
[INFO] [stderr]     Checking le-proc-macro v0.1.0 (/opt/rustwide/workdir/le-proc-macro)
[INFO] [stdout] warning: unused import: `regex::Regex`
[INFO] [stdout]  --> le-proc-macro/src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use regex::Regex;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `regex::Regex`
[INFO] [stdout]  --> le-proc-macro/src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use regex::Regex;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `regex::Regex`
[INFO] [stdout]  --> le-proc-macro/src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use regex::Regex;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking le-lib-crate v0.1.0 (/opt/rustwide/workdir/le-main-crate)
[INFO] [stdout] warning: struct is never constructed: `Struct`
[INFO] [stdout]  --> le-main-crate/src/main.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Struct;
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Struct`
[INFO] [stdout]  --> le-main-crate/src/main.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Struct;
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.39s
[INFO] running `Command { std: "docker" "inspect" "fc4201293c05acc41757383ee5b68e5e10392600aa5722cf6a9c16e7cc74955e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc4201293c05acc41757383ee5b68e5e10392600aa5722cf6a9c16e7cc74955e", kill_on_drop: false }`
[INFO] [stdout] fc4201293c05acc41757383ee5b68e5e10392600aa5722cf6a9c16e7cc74955e