[INFO] cloning repository https://github.com/Stovoy/buildy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Stovoy/buildy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStovoy%2Fbuildy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStovoy%2Fbuildy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c3f5e249ec9a02d4f4a6bdda2ed4a8462bd71f56
[INFO] checking Stovoy/buildy against master#bbefc9837f4157cc09ed60e6d7b21e345d582dd9 for pr-114571-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStovoy%2Fbuildy" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Stovoy/buildy on toolchain bbefc9837f4157cc09ed60e6d7b21e345d582dd9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bbefc9837f4157cc09ed60e6d7b21e345d582dd9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Stovoy/buildy
[INFO] finished tweaking git repo https://github.com/Stovoy/buildy
[INFO] tweaked toml for git repo https://github.com/Stovoy/buildy written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Stovoy/buildy 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" "+bbefc9837f4157cc09ed60e6d7b21e345d582dd9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr] warning: spurious network error (3 tries remaining): [28] Timeout was reached (failed to download any data for `syn v1.0.54` within 30s)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [28] Timeout was reached (download of `notify v4.0.15` failed to transfer more than 10 bytes in 30s)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (2 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (2 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr]   Downloaded crossbeam v0.8.0
[INFO] [stderr]   Downloaded fsevent v0.4.0
[INFO] [stderr]   Downloaded fsevent-sys v2.0.1
[INFO] [stderr]   Downloaded rand v0.3.23
[INFO] [stderr]   Downloaded gcc v0.3.55
[INFO] [stderr]   Downloaded memoffset v0.6.1
[INFO] [stderr] warning: spurious network error (1 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (1 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (2 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (2 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (2 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (2 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (2 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (2 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (2 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (2 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (2 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (2 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (2 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (2 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (2 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (2 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (2 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (2 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (2 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (2 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (2 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (2 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (2 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (2 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (2 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (2 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (2 tries remaining): [55] Failed sending data to the peer (Send failure: Broken pipe)
[INFO] [stderr] warning: spurious network error (3 tries remaining): [56] Failure when receiving data from the peer (Recv failure: Connection reset by peer)
[INFO] [stderr]   Downloaded once_cell v1.4.0
[INFO] [stderr] error: failed to download from `https://crates.io/api/v1/crates/syn/1.0.54/download`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   [55] Failed sending data to the peer (Send failure: Broken pipe)
[ERROR] this task or one of its parent failed!
[ERROR] command failed: exit status: 101
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking Stovoy/buildy against try#2399cef65c47f346b5fa9df51f48df0acd4a9d85 for pr-114571-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStovoy%2Fbuildy" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Stovoy/buildy on toolchain 2399cef65c47f346b5fa9df51f48df0acd4a9d85
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2399cef65c47f346b5fa9df51f48df0acd4a9d85" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Stovoy/buildy
[INFO] finished tweaking git repo https://github.com/Stovoy/buildy
[INFO] tweaked toml for git repo https://github.com/Stovoy/buildy written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Stovoy/buildy 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" "+2399cef65c47f346b5fa9df51f48df0acd4a9d85" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded shared_child v0.3.4
[INFO] [stderr]   Downloaded inotify-sys v0.1.3
[INFO] [stderr]   Downloaded filetime v0.2.10
[INFO] [stderr]   Downloaded linked-hash-map v0.5.3
[INFO] [stderr]   Downloaded mio-extras v2.0.6
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.1
[INFO] [stderr]   Downloaded const_fn v0.4.3
[INFO] [stderr]   Downloaded os_pipe v0.9.1
[INFO] [stderr]   Downloaded walkdir v2.3.1
[INFO] [stderr]   Downloaded dtoa v0.4.5
[INFO] [stderr]   Downloaded quote v1.0.6
[INFO] [stderr]   Downloaded time v0.1.43
[INFO] [stderr]   Downloaded serde_derive v1.0.118
[INFO] [stderr]   Downloaded serde v1.0.118
[INFO] [stderr]   Downloaded syn v1.0.54
[INFO] [stderr]   Downloaded rust-crypto v0.2.36
[INFO] [stderr]   Downloaded libc v0.2.70
[INFO] [stderr]   Downloaded crossbeam-channel v0.5.0
[INFO] [stderr]   Downloaded serde_yaml v0.8.14
[INFO] [stderr]   Downloaded duct v0.13.4
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.1
[INFO] [stderr]   Downloaded crossbeam-deque v0.8.0
[INFO] [stderr]   Downloaded net2 v0.2.34
[INFO] [stderr]   Downloaded termcolor v1.1.2
[INFO] [stderr]   Downloaded inotify v0.7.0
[INFO] [stderr]   Downloaded crossbeam-queue v0.3.1
[INFO] [stderr]   Downloaded notify v4.0.15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2399cef65c47f346b5fa9df51f48df0acd4a9d85" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2d0755cb94112d24250b1cba87668f7e448762bceb60dc406861a7161048d1e9
[INFO] running `Command { std: "docker" "start" "-a" "2d0755cb94112d24250b1cba87668f7e448762bceb60dc406861a7161048d1e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d0755cb94112d24250b1cba87668f7e448762bceb60dc406861a7161048d1e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d0755cb94112d24250b1cba87668f7e448762bceb60dc406861a7161048d1e9", kill_on_drop: false }`
[INFO] [stdout] 2d0755cb94112d24250b1cba87668f7e448762bceb60dc406861a7161048d1e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2399cef65c47f346b5fa9df51f48df0acd4a9d85" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0bb5fdc776c79c73daf78adee1e586e427b4a318d9e787535c840b6ebec7200e
[INFO] running `Command { std: "docker" "start" "-a" "0bb5fdc776c79c73daf78adee1e586e427b4a318d9e787535c840b6ebec7200e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling const_fn v0.4.3
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking linked-hash-map v0.5.3
[INFO] [stderr]     Checking lazycell v1.2.1
[INFO] [stderr]     Checking once_cell v1.4.0
[INFO] [stderr]     Checking dtoa v0.4.5
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking yaml-rust v0.4.3
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]     Checking crossbeam-epoch v0.9.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking crossbeam-queue v0.3.1
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking filetime v0.2.10
[INFO] [stderr]     Checking shared_child v0.3.4
[INFO] [stderr]     Checking os_pipe v0.9.1
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking inotify v0.7.0
[INFO] [stderr]     Checking duct v0.13.4
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking crossbeam v0.8.0
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking notify v4.0.15
[INFO] [stderr]     Checking serde_yaml v0.8.14
[INFO] [stderr]     Checking buildy v0.12.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let mut target = targets.get_mut(name).unwrap();
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let mut target = targets.get_mut(name).unwrap();
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.94s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "0bb5fdc776c79c73daf78adee1e586e427b4a318d9e787535c840b6ebec7200e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bb5fdc776c79c73daf78adee1e586e427b4a318d9e787535c840b6ebec7200e", kill_on_drop: false }`
[INFO] [stdout] 0bb5fdc776c79c73daf78adee1e586e427b4a318d9e787535c840b6ebec7200e