[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] checking cjm00/dedup against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcjm00%2Fdedup" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cjm00/dedup on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "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-9/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" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4f8a81d820400d909863267ad1ac1b50b3d296e0479d43d644c8647f559b0569
[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" "4f8a81d820400d909863267ad1ac1b50b3d296e0479d43d644c8647f559b0569", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f8a81d820400d909863267ad1ac1b50b3d296e0479d43d644c8647f559b0569", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f8a81d820400d909863267ad1ac1b50b3d296e0479d43d644c8647f559b0569", kill_on_drop: false }`
[INFO] [stdout] 4f8a81d820400d909863267ad1ac1b50b3d296e0479d43d644c8647f559b0569
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "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] 68e753c7947f1ec21b1c1429fdc7736c4501cf8756bf7e833b105e7a02d1496b
[INFO] running `Command { std: "docker" "start" "-a" "68e753c7947f1ec21b1c1429fdc7736c4501cf8756bf7e833b105e7a02d1496b", kill_on_drop: false }`
[INFO] [stderr]     Checking byteorder v1.2.3
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]    Compiling serde v1.0.59
[INFO] [stderr]    Compiling regex v1.0.0
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]     Checking bitflags v1.0.3
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking cast v0.2.2
[INFO] [stderr]     Checking termcolor v0.3.6
[INFO] [stderr]     Checking dtoa v0.4.2
[INFO] [stderr]     Checking memmap v0.6.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.19
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.3
[INFO] [stderr]     Checking humantime v1.1.1
[INFO] [stderr]     Checking itertools v0.7.8
[INFO] [stderr]     Checking fastchr v0.4.0 (/opt/rustwide/workdir/fastchr)
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking regex-syntax v0.6.0
[INFO] [stderr]     Checking criterion-stats v0.2.3
[INFO] [stderr]     Checking term v0.5.1
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking clap v2.30.0
[INFO] [stderr]     Checking simplelog v0.5.2
[INFO] [stderr]    Compiling quote v0.6.2
[INFO] [stderr]    Compiling syn v0.14.0
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]     Checking env_logger v0.5.10
[INFO] [stderr]     Checking dedup v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde_json v1.0.17
[INFO] [stderr]     Checking quickcheck v0.6.2
[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] [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]    Compiling serde_derive v1.0.59
[INFO] [stderr]     Checking backtrace v0.3.8
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]     Checking criterion v0.2.3
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> fastchr/benches/benches.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | / lazy_static!{
[INFO] [stdout] 23 | |     static ref DATA: Vec<u8> = {
[INFO] [stdout] 24 | |         iter::repeat(14u8).take(LONG_PREFIX_LEN)
[INFO] [stdout] 25 | |         .chain(iter::once(NEEDLE))
[INFO] [stdout] ...  |
[INFO] [stdout] 40 | |     };
[INFO] [stdout] 41 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> fastchr/benches/benches.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | / lazy_static!{
[INFO] [stdout] 23 | |     static ref DATA: Vec<u8> = {
[INFO] [stdout] 24 | |         iter::repeat(14u8).take(LONG_PREFIX_LEN)
[INFO] [stdout] 25 | |         .chain(iter::once(NEEDLE))
[INFO] [stdout] ...  |
[INFO] [stdout] 40 | |     };
[INFO] [stdout] 41 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> fastchr/benches/benches.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | / lazy_static!{
[INFO] [stdout] 23 | |     static ref DATA: Vec<u8> = {
[INFO] [stdout] 24 | |         iter::repeat(14u8).take(LONG_PREFIX_LEN)
[INFO] [stdout] 25 | |         .chain(iter::once(NEEDLE))
[INFO] [stdout] ...  |
[INFO] [stdout] 40 | |     };
[INFO] [stdout] 41 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> fastchr/benches/benches.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | / lazy_static!{
[INFO] [stdout] 23 | |     static ref DATA: Vec<u8> = {
[INFO] [stdout] 24 | |         iter::repeat(14u8).take(LONG_PREFIX_LEN)
[INFO] [stdout] 25 | |         .chain(iter::once(NEEDLE))
[INFO] [stdout] ...  |
[INFO] [stdout] 40 | |     };
[INFO] [stdout] 41 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 41.39s
[INFO] running `Command { std: "docker" "inspect" "68e753c7947f1ec21b1c1429fdc7736c4501cf8756bf7e833b105e7a02d1496b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68e753c7947f1ec21b1c1429fdc7736c4501cf8756bf7e833b105e7a02d1496b", kill_on_drop: false }`
[INFO] [stdout] 68e753c7947f1ec21b1c1429fdc7736c4501cf8756bf7e833b105e7a02d1496b