[INFO] fetching crate pipebase 0.1.8...
[INFO] checking pipebase-0.1.8 against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] extracting crate pipebase 0.1.8 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate pipebase 0.1.8 on toolchain db1fb85cff63ad5fffe435e17128f99f9e1d970c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pipebase 0.1.8
[INFO] finished tweaking crates.io crate pipebase 0.1.8
[INFO] tweaked toml for crates.io crate pipebase 0.1.8 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 848f887b961b3642765ad686bfdc7dd6e1a2c6104fe2a435730317ea146c58ae
[INFO] running `Command { std: "docker" "start" "-a" "848f887b961b3642765ad686bfdc7dd6e1a2c6104fe2a435730317ea146c58ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "848f887b961b3642765ad686bfdc7dd6e1a2c6104fe2a435730317ea146c58ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "848f887b961b3642765ad686bfdc7dd6e1a2c6104fe2a435730317ea146c58ae", kill_on_drop: false }`
[INFO] [stdout] 848f887b961b3642765ad686bfdc7dd6e1a2c6104fe2a435730317ea146c58ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 32f2c0607a959f0878f7213687ef59191396f91bca69ed2c1c273baf3d46c14e
[INFO] running `Command { std: "docker" "start" "-a" "32f2c0607a959f0878f7213687ef59191396f91bca69ed2c1c273baf3d46c14e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking indexmap v1.7.0
[INFO] [stderr]     Checking parking_lot_core v0.8.5
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]    Compiling strum_macros v0.20.1
[INFO] [stderr]    Compiling pipederive v0.1.3
[INFO] [stderr]    Compiling async-trait v0.1.51
[INFO] [stderr]     Checking tokio v1.11.0
[INFO] [stderr]     Checking strum v0.20.0
[INFO] [stderr]     Checking serde v1.0.130
[INFO] [stderr]     Checking serde_yaml v0.8.21
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking serde_json v1.0.68
[INFO] [stderr]     Checking pipebase v0.1.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/common/pipe.rs:126:17
[INFO] [stdout]     |
[INFO] [stdout] 126 |             let mut txs = vec![];
[INFO] [stdout]     |                 ----^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/common/bootstrap.rs:12:14
[INFO] [stdout]     |
[INFO] [stdout] 12  |     #[derive(Bootstrap)]
[INFO] [stdout]     |              --------- in this derive macro expansion
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `run_pipe` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/common/pipe.rs:126:17
[INFO] [stdout]     |
[INFO] [stdout] 126 |             let mut txs = vec![];
[INFO] [stdout]     |                 ----^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/export/print.rs:58:13
[INFO] [stdout]     |
[INFO] [stdout] 58  |             run_pipe!(printer, PrinterConfig, [], rx)
[INFO] [stdout]     |             ----------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `run_pipe` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `key`
[INFO] [stdout]    --> src/collect/bag.rs:102:9
[INFO] [stdout]     |
[INFO] [stdout] 102 |         pub key: String,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `id`
[INFO] [stdout]    --> src/map/add.rs:140:9
[INFO] [stdout]     |
[INFO] [stdout] 140 |         id: String,
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `value`
[INFO] [stdout]   --> src/select/hash.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |         pub value: i32,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.91s
[INFO] running `Command { std: "docker" "inspect" "32f2c0607a959f0878f7213687ef59191396f91bca69ed2c1c273baf3d46c14e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32f2c0607a959f0878f7213687ef59191396f91bca69ed2c1c273baf3d46c14e", kill_on_drop: false }`
[INFO] [stdout] 32f2c0607a959f0878f7213687ef59191396f91bca69ed2c1c273baf3d46c14e