[INFO] cloning repository https://github.com/cjm00/dedup
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cjm00/dedup" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcjm00%2Fdedup", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcjm00%2Fdedup'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4cf1228cb85a2f62253dce045e4c68621b4052b2
[INFO] testing cjm00/dedup against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcjm00%2Fdedup" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cjm00/dedup on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cjm00/dedup
[INFO] finished tweaking git repo https://github.com/cjm00/dedup
[INFO] tweaked toml for git repo https://github.com/cjm00/dedup written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/cjm00/dedup already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "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 failure_derive v0.1.1
[INFO] [stderr]   Downloaded regex v1.0.0
[INFO] [stderr]   Downloaded synstructure v0.6.1
[INFO] [stderr]   Downloaded cc v1.0.15
[INFO] [stderr]   Downloaded proc-macro2 v0.4.3
[INFO] [stderr]   Downloaded failure v0.1.1
[INFO] [stderr]   Downloaded itertools-num v0.1.1
[INFO] [stderr]   Downloaded simplelog v0.5.2
[INFO] [stderr]   Downloaded criterion-stats v0.2.3
[INFO] [stderr]   Downloaded rustc-demangle v0.1.8
[INFO] [stderr]   Downloaded backtrace v0.3.8
[INFO] [stderr]   Downloaded backtrace-sys v0.1.19
[INFO] [stderr]   Downloaded serde v1.0.59
[INFO] [stderr]   Downloaded redox_syscall v0.1.38
[INFO] [stderr]   Downloaded cfg-if v0.1.3
[INFO] [stderr]   Downloaded libc v0.2.41
[INFO] [stderr]   Downloaded serde_json v1.0.17
[INFO] [stderr]   Downloaded serde_derive v1.0.59
[INFO] [stderr]   Downloaded criterion v0.2.3
[INFO] [stderr]   Downloaded num-integer v0.1.38
[INFO] [stderr]   Downloaded quote v0.6.2
[INFO] [stderr]   Downloaded num-traits v0.2.4
[INFO] [stderr]   Downloaded atty v0.2.10
[INFO] [stderr]   Downloaded regex-syntax v0.6.0
[INFO] [stderr]   Downloaded env_logger v0.5.10
[INFO] [stderr]   Downloaded syn v0.14.0
[INFO] [stderr]   Downloaded itoa v0.4.1
[INFO] [stderr]   Downloaded quickcheck v0.6.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 64b20adc2a45574e6ff97f27cb4b1a3cd9b50f2b96b0f4ef89084071c1c9393f
[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" "64b20adc2a45574e6ff97f27cb4b1a3cd9b50f2b96b0f4ef89084071c1c9393f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "64b20adc2a45574e6ff97f27cb4b1a3cd9b50f2b96b0f4ef89084071c1c9393f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64b20adc2a45574e6ff97f27cb4b1a3cd9b50f2b96b0f4ef89084071c1c9393f", kill_on_drop: false }`
[INFO] [stdout] 64b20adc2a45574e6ff97f27cb4b1a3cd9b50f2b96b0f4ef89084071c1c9393f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ad6bfd1aa1d099445aed4fcb121fb992c691670d7e130f7e0028010f6cec9d1
[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" "1ad6bfd1aa1d099445aed4fcb121fb992c691670d7e130f7e0028010f6cec9d1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.41
[INFO] [stderr]    Compiling ansi_term v0.10.2
[INFO] [stderr]    Compiling textwrap v0.9.0
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling atty v0.2.10
[INFO] [stderr]    Compiling memmap v0.6.2
[INFO] [stderr]    Compiling clap v2.30.0
[INFO] [stderr]    Compiling fastchr v0.4.0 (/opt/rustwide/workdir/fastchr)
[INFO] [stderr]    Compiling dedup v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/buffer.rs:34:18
[INFO] [stdout]    |
[INFO] [stdout] 34 |             let (mut ele, rest) = self.buffer.split_at(u + 1);
[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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.08s
[INFO] running `Command { std: "docker" "inspect" "1ad6bfd1aa1d099445aed4fcb121fb992c691670d7e130f7e0028010f6cec9d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ad6bfd1aa1d099445aed4fcb121fb992c691670d7e130f7e0028010f6cec9d1", kill_on_drop: false }`
[INFO] [stdout] 1ad6bfd1aa1d099445aed4fcb121fb992c691670d7e130f7e0028010f6cec9d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--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] bd097d3468ba33773db699ae62a39f4e8d36790f813ff22a6088bc07692ccaf1
[INFO] running `Command { std: "docker" "start" "-a" "bd097d3468ba33773db699ae62a39f4e8d36790f813ff22a6088bc07692ccaf1", kill_on_drop: false }`
[INFO] [stderr]    Compiling dedup v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/buffer.rs:34:18
[INFO] [stdout]    |
[INFO] [stdout] 34 |             let (mut ele, rest) = self.buffer.split_at(u + 1);
[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] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.64s
[INFO] running `Command { std: "docker" "inspect" "bd097d3468ba33773db699ae62a39f4e8d36790f813ff22a6088bc07692ccaf1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd097d3468ba33773db699ae62a39f4e8d36790f813ff22a6088bc07692ccaf1", kill_on_drop: false }`
[INFO] [stdout] bd097d3468ba33773db699ae62a39f4e8d36790f813ff22a6088bc07692ccaf1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fb2b4bbde9704a3c281769ef48202b2cfcf2f19d68cfef4ee147f2124cfca933
[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" "fb2b4bbde9704a3c281769ef48202b2cfcf2f19d68cfef4ee147f2124cfca933", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/buffer.rs:34:18
[INFO] [stderr]    |
[INFO] [stderr] 34 |             let (mut ele, rest) = self.buffer.split_at(u + 1);
[INFO] [stderr]    |                  ----^^^
[INFO] [stderr]    |                  |
[INFO] [stderr]    |                  help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/dedup-d175f2fe55b5854f)
[INFO] [stdout] running 8 tests
[INFO] [stdout] test args::tests::single_input_test ... ok
[INFO] [stdout] test args::tests::input_output_test ... ok
[INFO] [stdout] test args::tests::output_input_test ... ok
[INFO] [stdout] test args::tests::unspecified_delim_test ... ok
[INFO] [stdout] test args::tests::no_mmap_test ... ok
[INFO] [stdout] test buffer::tests::buf_breakfast_dedup ... ok
[INFO] [stdout] test args::tests::specify_delim_test ... ok
[INFO] [stdout] test stream::tests::stream_breakfast_dedup ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fb2b4bbde9704a3c281769ef48202b2cfcf2f19d68cfef4ee147f2124cfca933", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb2b4bbde9704a3c281769ef48202b2cfcf2f19d68cfef4ee147f2124cfca933", kill_on_drop: false }`
[INFO] [stdout] fb2b4bbde9704a3c281769ef48202b2cfcf2f19d68cfef4ee147f2124cfca933