[INFO] cloning repository https://github.com/erithmetic/rust-intro
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/erithmetic/rust-intro" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferithmetic%2Frust-intro", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferithmetic%2Frust-intro'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d67bdc3fd9a8757ad3836cc8edc612950848f6be
[INFO] checking erithmetic/rust-intro against try#07fecb9cf34c4979a772ba38c99d6d9144768413 for pr-87710
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferithmetic%2Frust-intro" "/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/erithmetic/rust-intro on toolchain 07fecb9cf34c4979a772ba38c99d6d9144768413
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/erithmetic/rust-intro
[INFO] finished tweaking git repo https://github.com/erithmetic/rust-intro
[INFO] tweaked toml for git repo https://github.com/erithmetic/rust-intro written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/erithmetic/rust-intro already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_json v1.0.41
[INFO] [stderr]   Downloaded proc-macro2 v1.0.5
[INFO] [stderr]   Downloaded syn v1.0.5
[INFO] [stderr]   Downloaded serde v1.0.101
[INFO] [stderr]   Downloaded serde_derive v1.0.101
[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" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e946e8cc619ca929b91b79fff54237561e1be748d7714122e679b58f72b7d8ec
[INFO] running `Command { std: "docker" "start" "-a" "e946e8cc619ca929b91b79fff54237561e1be748d7714122e679b58f72b7d8ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e946e8cc619ca929b91b79fff54237561e1be748d7714122e679b58f72b7d8ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e946e8cc619ca929b91b79fff54237561e1be748d7714122e679b58f72b7d8ec", kill_on_drop: false }`
[INFO] [stdout] e946e8cc619ca929b91b79fff54237561e1be748d7714122e679b58f72b7d8ec
[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" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c31bbc9a4ac7c93565709f8faa108c11dcbc8cfd9f2f071b156c71bcddd9a9b3
[INFO] running `Command { std: "docker" "start" "-a" "c31bbc9a4ac7c93565709f8faa108c11dcbc8cfd9f2f071b156c71bcddd9a9b3", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]    Compiling proc-macro2 v1.0.5
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]     Checking serde_json v1.0.41
[INFO] [stderr]     Checking file_io v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.49s
[INFO] running `Command { std: "docker" "inspect" "c31bbc9a4ac7c93565709f8faa108c11dcbc8cfd9f2f071b156c71bcddd9a9b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c31bbc9a4ac7c93565709f8faa108c11dcbc8cfd9f2f071b156c71bcddd9a9b3", kill_on_drop: false }`
[INFO] [stdout] c31bbc9a4ac7c93565709f8faa108c11dcbc8cfd9f2f071b156c71bcddd9a9b3