[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#27d8a577138c0d319a572cd1a464c2b755e577de for pr-118882
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcjm00%2Fdedup" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cjm00/dedup on toolchain 27d8a577138c0d319a572cd1a464c2b755e577de
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+27d8a577138c0d319a572cd1a464c2b755e577de" "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-tc1/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+27d8a577138c0d319a572cd1a464c2b755e577de" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking cjm00/dedup against try#8bdbfd41bed26c4938a9f14bd20556eac1de8437 for pr-118882
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcjm00%2Fdedup" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cjm00/dedup on toolchain 8bdbfd41bed26c4938a9f14bd20556eac1de8437
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8bdbfd41bed26c4938a9f14bd20556eac1de8437" "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-tc2/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8bdbfd41bed26c4938a9f14bd20556eac1de8437" "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 quickcheck v0.6.2
[INFO] [stderr]   Downloaded regex-syntax v0.6.0
[INFO] [stderr]   Downloaded serde_json v1.0.17
[INFO] [stderr]   Downloaded quick-error v1.2.1
[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 serde_derive v1.0.59
[INFO] [stderr]   Downloaded serde v1.0.59
[INFO] [stderr]   Downloaded criterion v0.2.3
[INFO] [stderr]   Downloaded regex v1.0.0
[INFO] [stderr]   Downloaded backtrace-sys v0.1.19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+8bdbfd41bed26c4938a9f14bd20556eac1de8437" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3afb19f2ffd068244ba432d252ae781ef5e5d352cd88b037684b73f3a32f371a
[INFO] running `Command { std: "docker" "start" "-a" "3afb19f2ffd068244ba432d252ae781ef5e5d352cd88b037684b73f3a32f371a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3afb19f2ffd068244ba432d252ae781ef5e5d352cd88b037684b73f3a32f371a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3afb19f2ffd068244ba432d252ae781ef5e5d352cd88b037684b73f3a32f371a", kill_on_drop: false }`
[INFO] [stdout] 3afb19f2ffd068244ba432d252ae781ef5e5d352cd88b037684b73f3a32f371a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+8bdbfd41bed26c4938a9f14bd20556eac1de8437" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cd6a530adddfcc9f6b3f0c1dda29909d88718290fb16fe49723000c38fbfaf75
[INFO] running `Command { std: "docker" "start" "-a" "cd6a530adddfcc9f6b3f0c1dda29909d88718290fb16fe49723000c38fbfaf75", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.41
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]     Checking cfg-if v0.1.3
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]     Checking byteorder v1.2.3
[INFO] [stderr]    Compiling cc v1.0.15
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling num-integer v0.1.38
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking lazy_static v1.0.0
[INFO] [stderr]     Checking ansi_term v0.10.2
[INFO] [stderr]    Compiling regex v1.0.0
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]     Checking bitflags v1.0.3
[INFO] [stderr]    Compiling proc-macro2 v0.4.3
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]    Compiling serde v1.0.59
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking regex-syntax v0.6.0
[INFO] [stderr]     Checking rustc-demangle v0.1.8
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking quick-error v1.2.1
[INFO] [stderr]     Checking term v0.5.1
[INFO] [stderr]     Checking thread-scoped v1.0.2
[INFO] [stderr]     Checking cast v0.2.2
[INFO] [stderr]     Checking humantime v1.1.1
[INFO] [stderr]     Checking dtoa v0.4.2
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]     Checking itoa v0.4.1
[INFO] [stderr]    Compiling quote v0.6.2
[INFO] [stderr]     Checking termcolor v0.3.6
[INFO] [stderr]     Checking itertools v0.7.8
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking atty v0.2.10
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking memmap v0.6.2
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]     Checking fastchr v0.4.0 (/opt/rustwide/workdir/fastchr)
[INFO] [stderr]    Compiling syn v0.14.0
[INFO] [stderr]     Checking clap v2.30.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.19
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking criterion-stats v0.2.3
[INFO] [stderr]     Checking itertools-num v0.1.1
[INFO] [stderr]     Checking chrono v0.4.2
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]     Checking simplelog v0.5.2
[INFO] [stderr]     Checking env_logger v0.5.10
[INFO] [stderr]     Checking quickcheck v0.6.2
[INFO] [stderr]    Compiling serde_derive v1.0.59
[INFO] [stderr]     Checking 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: 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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking serde_json v1.0.17
[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 the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (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 the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (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 the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (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 the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (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 8.35s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.14.0
[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" "cd6a530adddfcc9f6b3f0c1dda29909d88718290fb16fe49723000c38fbfaf75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd6a530adddfcc9f6b3f0c1dda29909d88718290fb16fe49723000c38fbfaf75", kill_on_drop: false }`
[INFO] [stdout] cd6a530adddfcc9f6b3f0c1dda29909d88718290fb16fe49723000c38fbfaf75