[INFO] cloning repository https://github.com/yamaura/followfile
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yamaura/followfile" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyamaura%2Ffollowfile", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyamaura%2Ffollowfile'...
[INFO] [stderr] error: unable to write symref for HEAD: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/yamaura/followfile
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yamaura/followfile" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyamaura%2Ffollowfile", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyamaura%2Ffollowfile'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2eccd7985036d9046f564bcc50d8d598ed735699
[INFO] checking yamaura/followfile against master#a26e97be8826d408309fffbd8168362365719f50 for pr-136776
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyamaura%2Ffollowfile" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yamaura/followfile on toolchain a26e97be8826d408309fffbd8168362365719f50
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a26e97be8826d408309fffbd8168362365719f50" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yamaura/followfile
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/yamaura/followfile
[INFO] tweaked toml for git repo https://github.com/yamaura/followfile written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/yamaura/followfile 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" "+a26e97be8826d408309fffbd8168362365719f50" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+a26e97be8826d408309fffbd8168362365719f50" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aed67643a44c45fcd0c7ba023b345a6acf9f96bf76f2e1b400b7aad97012a163
[INFO] running `Command { std: "docker" "start" "-a" "aed67643a44c45fcd0c7ba023b345a6acf9f96bf76f2e1b400b7aad97012a163", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aed67643a44c45fcd0c7ba023b345a6acf9f96bf76f2e1b400b7aad97012a163", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aed67643a44c45fcd0c7ba023b345a6acf9f96bf76f2e1b400b7aad97012a163", kill_on_drop: false }`
[INFO] [stdout] aed67643a44c45fcd0c7ba023b345a6acf9f96bf76f2e1b400b7aad97012a163
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+a26e97be8826d408309fffbd8168362365719f50" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c06bc7ef7d5ac0161f84e9cc44300d21cd290b17c90ea4d55dba5e7c581697d2
[INFO] running `Command { std: "docker" "start" "-a" "c06bc7ef7d5ac0161f84e9cc44300d21cd290b17c90ea4d55dba5e7c581697d2", kill_on_drop: false }`
[INFO] [stderr]     Checking followfile v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/lib.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{self};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/lib.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{self};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `inner`, `option`, and `watcher` are never read
[INFO] [stdout]  --> src/lib.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct FollowFile<R, W> {
[INFO] [stdout]   |            ---------- fields in this struct
[INFO] [stdout] 7 |     inner: R,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 8 |     option: FollowOptions,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 9 |     watcher: Pin<Box<W>>,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `inner`, `option`, and `watcher` are never read
[INFO] [stdout]  --> src/lib.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct FollowFile<R, W> {
[INFO] [stdout]   |            ---------- fields in this struct
[INFO] [stdout] 7 |     inner: R,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 8 |     option: FollowOptions,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 9 |     watcher: Pin<Box<W>>,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "c06bc7ef7d5ac0161f84e9cc44300d21cd290b17c90ea4d55dba5e7c581697d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c06bc7ef7d5ac0161f84e9cc44300d21cd290b17c90ea4d55dba5e7c581697d2", kill_on_drop: false }`
[INFO] [stdout] c06bc7ef7d5ac0161f84e9cc44300d21cd290b17c90ea4d55dba5e7c581697d2