[INFO] fetching crate repub 0.4.1...
[INFO] checking repub-0.4.1 against beta for pr-78714
[INFO] extracting crate repub 0.4.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate repub 0.4.1 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate repub 0.4.1
[INFO] finished tweaking crates.io crate repub 0.4.1
[INFO] tweaked toml for crates.io crate repub 0.4.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate repub 0.4.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", 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] c09d278aa8e642491beb33ba5a08758071b7f5130eead9b001a1a0ef7288ae3b
[INFO] running `Command { std: "docker" "start" "-a" "c09d278aa8e642491beb33ba5a08758071b7f5130eead9b001a1a0ef7288ae3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c09d278aa8e642491beb33ba5a08758071b7f5130eead9b001a1a0ef7288ae3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c09d278aa8e642491beb33ba5a08758071b7f5130eead9b001a1a0ef7288ae3b", kill_on_drop: false }`
[INFO] [stdout] c09d278aa8e642491beb33ba5a08758071b7f5130eead9b001a1a0ef7288ae3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c71f4caa12b43d27ef9d6d35075578e92f6d6c7eb12ed834eae92594e7d37857
[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" "c71f4caa12b43d27ef9d6d35075578e92f6d6c7eb12ed834eae92594e7d37857", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.3
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling cc v1.0.45
[INFO] [stderr]    Compiling serde v1.0.100
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling string_cache_shared v0.3.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]     Checking new_debug_unreachable v1.0.3
[INFO] [stderr]    Compiling itoa v0.4.4
[INFO] [stderr]    Compiling ucd-trie v0.1.2
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]    Compiling winapi v0.3.8
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking mac v0.1.1
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]     Checking utf-8 v0.7.5
[INFO] [stderr]     Checking approx v0.1.1
[INFO] [stderr]     Checking adler32 v1.0.3
[INFO] [stderr]     Checking precomputed-hash v0.1.1
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking unchecked-index v0.2.2
[INFO] [stderr]     Checking rgb v0.8.14
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking entities v1.0.1
[INFO] [stderr]     Checking unicode_categories v0.1.1
[INFO] [stderr]     Checking termcolor v1.0.5
[INFO] [stderr]     Checking typed-arena v1.5.0
[INFO] [stderr]     Checking podio v0.1.6
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling pest v2.1.2
[INFO] [stderr]     Checking futf v0.1.4
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]     Checking miniz_oxide v0.3.2
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]     Checking phf v0.7.24
[INFO] [stderr]     Checking tendril v0.4.1
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking twoway v0.2.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking flate2 v1.0.11
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling pest_meta v2.1.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling bzip2-sys v0.1.7
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]     Checking bzip2 v0.3.3
[INFO] [stderr]     Checking backtrace v0.3.37
[INFO] [stderr]     Checking zip v0.5.3
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling string_cache_codegen v0.4.2
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling pest_generator v2.1.1
[INFO] [stderr]    Compiling string_cache v0.7.3
[INFO] [stderr]    Compiling serde_derive v1.0.100
[INFO] [stderr]     Checking winconsole v0.10.0
[INFO] [stderr]     Checking colored_truecolor v0.1.0
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking comrak v0.6.2
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling html5ever v0.24.0
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]    Compiling markup5ever v0.9.0
[INFO] [stderr]     Checking repub v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/load.rs:261:17
[INFO] [stdout]     |
[INFO] [stdout] 261 |             let mut ignores = {
[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/load.rs:261:17
[INFO] [stdout]     |
[INFO] [stdout] 261 |             let mut ignores = {
[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: associated function is never used: `ignored`
[INFO] [stdout]    --> src/prelude/util.rs:105:20
[INFO] [stdout]     |
[INFO] [stdout] 105 |             pub fn ignored<T: ToString>(to_string: &T) -> Self {
[INFO] [stdout]     |                    ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Ignored`
[INFO] [stdout]    --> src/prelude/util.rs:147:13
[INFO] [stdout]     |
[INFO] [stdout] 147 |             Ignored,
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ignored`
[INFO] [stdout]    --> src/prelude/util.rs:105:20
[INFO] [stdout]     |
[INFO] [stdout] 105 |             pub fn ignored<T: ToString>(to_string: &T) -> Self {
[INFO] [stdout]     |                    ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Ignored`
[INFO] [stdout]    --> src/prelude/util.rs:147:13
[INFO] [stdout]     |
[INFO] [stdout] 147 |             Ignored,
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/compose.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |             std::fs::remove_dir_all(&self.tmp_dir.path);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/compose.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |             std::fs::remove_dir_all(&self.tmp_dir.path);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 58s
[INFO] running `Command { std: "docker" "inspect" "c71f4caa12b43d27ef9d6d35075578e92f6d6c7eb12ed834eae92594e7d37857", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c71f4caa12b43d27ef9d6d35075578e92f6d6c7eb12ed834eae92594e7d37857", kill_on_drop: false }`
[INFO] [stdout] c71f4caa12b43d27ef9d6d35075578e92f6d6c7eb12ed834eae92594e7d37857