[INFO] fetching crate rrule 0.3.4...
[INFO] checking rrule-0.3.4 against try#b2f80f6008cdafc35b4472bd46afa16cc6b0cd63 for pr-79470
[INFO] extracting crate rrule 0.3.4 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate rrule 0.3.4 on toolchain b2f80f6008cdafc35b4472bd46afa16cc6b0cd63
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rrule 0.3.4
[INFO] finished tweaking crates.io crate rrule 0.3.4
[INFO] tweaked toml for crates.io crate rrule 0.3.4 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1947ff2483b695f9cf3de93c13153667926962b4377791c56ccb11941300a8dd
[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" "1947ff2483b695f9cf3de93c13153667926962b4377791c56ccb11941300a8dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1947ff2483b695f9cf3de93c13153667926962b4377791c56ccb11941300a8dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1947ff2483b695f9cf3de93c13153667926962b4377791c56ccb11941300a8dd", kill_on_drop: false }`
[INFO] [stdout] 1947ff2483b695f9cf3de93c13153667926962b4377791c56ccb11941300a8dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16e632bd7183d23b1b31d12057a8e232a73b2effd5e04085c845350d5fc5124f
[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" "16e632bd7183d23b1b31d12057a8e232a73b2effd5e04085c845350d5fc5124f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]    Compiling regex v1.4.2
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]    Compiling parse-zoneinfo v0.3.0
[INFO] [stderr]    Compiling chrono-tz v0.5.3
[INFO] [stderr]     Checking rrule v0.3.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Tz`, `UTC`
[INFO] [stdout]    --> src/rrulestr.rs:574:21
[INFO] [stdout]     |
[INFO] [stdout] 574 |     use chrono_tz::{Tz, UTC};
[INFO] [stdout]     |                     ^^  ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `UTC`
[INFO] [stdout]  --> src/rruleset.rs:7:21
[INFO] [stdout]   |
[INFO] [stdout] 7 | use chrono_tz::{Tz, UTC};
[INFO] [stdout]   |                     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parse_options.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let mut bynweekday: Vec<Vec<isize>> = vec![];
[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/parse_options.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let mut bynweekday: Vec<Vec<isize>> = vec![];
[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: `lastyear`
[INFO] [stdout]   --> src/iter/iterinfo.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn lastyear(&self) -> Option<isize> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `lastmonth`
[INFO] [stdout]   --> src/iter/iterinfo.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub fn lastmonth(&self) -> Option<usize> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `lastyear`
[INFO] [stdout]   --> src/iter/iterinfo.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn lastyear(&self) -> Option<isize> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `lastmonth`
[INFO] [stdout]   --> src/iter/iterinfo.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub fn lastmonth(&self) -> Option<usize> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 42.74s
[INFO] running `Command { std: "docker" "inspect" "16e632bd7183d23b1b31d12057a8e232a73b2effd5e04085c845350d5fc5124f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16e632bd7183d23b1b31d12057a8e232a73b2effd5e04085c845350d5fc5124f", kill_on_drop: false }`
[INFO] [stdout] 16e632bd7183d23b1b31d12057a8e232a73b2effd5e04085c845350d5fc5124f