[INFO] fetching crate pipebase 0.1.5...
[INFO] checking pipebase-0.1.5 against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] extracting crate pipebase 0.1.5 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate pipebase 0.1.5 on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pipebase 0.1.5
[INFO] finished tweaking crates.io crate pipebase 0.1.5
[INFO] tweaked toml for crates.io crate pipebase 0.1.5 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4abecad959edb518f60d6bea876d16186ef6a9f6802132cbbe1e5fffc8d9e56b
[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" "4abecad959edb518f60d6bea876d16186ef6a9f6802132cbbe1e5fffc8d9e56b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4abecad959edb518f60d6bea876d16186ef6a9f6802132cbbe1e5fffc8d9e56b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4abecad959edb518f60d6bea876d16186ef6a9f6802132cbbe1e5fffc8d9e56b", kill_on_drop: false }`
[INFO] [stdout] 4abecad959edb518f60d6bea876d16186ef6a9f6802132cbbe1e5fffc8d9e56b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] a928ae98dd61485b065000bbf33d19eea10838852b480408a3c38e8a35728f31
[INFO] running `Command { std: "docker" "start" "-a" "a928ae98dd61485b065000bbf33d19eea10838852b480408a3c38e8a35728f31", kill_on_drop: false }`
[INFO] [stderr]     Checking pipebase v0.1.5 (/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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.89s
[INFO] running `Command { std: "docker" "inspect" "a928ae98dd61485b065000bbf33d19eea10838852b480408a3c38e8a35728f31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a928ae98dd61485b065000bbf33d19eea10838852b480408a3c38e8a35728f31", kill_on_drop: false }`
[INFO] [stdout] a928ae98dd61485b065000bbf33d19eea10838852b480408a3c38e8a35728f31