[INFO] fetching crate web_ical 0.1.2...
[INFO] checking web_ical-0.1.2 against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] extracting crate web_ical 0.1.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate web_ical 0.1.2 on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate web_ical 0.1.2
[INFO] finished tweaking crates.io crate web_ical 0.1.2
[INFO] tweaked toml for crates.io crate web_ical 0.1.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 23b401ae536095c1bc3ba43d25c479bc6dfa8ce38d41c616f92ec9df48dfeb65
[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" "23b401ae536095c1bc3ba43d25c479bc6dfa8ce38d41c616f92ec9df48dfeb65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "23b401ae536095c1bc3ba43d25c479bc6dfa8ce38d41c616f92ec9df48dfeb65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23b401ae536095c1bc3ba43d25c479bc6dfa8ce38d41c616f92ec9df48dfeb65", kill_on_drop: false }`
[INFO] [stdout] 23b401ae536095c1bc3ba43d25c479bc6dfa8ce38d41c616f92ec9df48dfeb65
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "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] c6a5d9b0be563eaf1e6cafe4e8e308ebd130f7686bf96c2042bdca7142fc8b61
[INFO] running `Command { std: "docker" "start" "-a" "c6a5d9b0be563eaf1e6cafe4e8e308ebd130f7686bf96c2042bdca7142fc8b61", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling openssl-sys v0.9.63
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking backtrace v0.3.59
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling mime_guess v2.0.3
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking cookie v0.12.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking http v0.1.21
[INFO] [stderr]     Checking string v0.2.1
[INFO] [stderr]     Checking tokio-buf v0.1.1
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling openssl v0.10.34
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking http-body v0.1.0
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking serde v1.0.125
[INFO] [stderr]     Checking hyper v0.12.36
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking serde_urlencoded v0.5.5
[INFO] [stderr]     Checking cookie_store v0.7.0
[INFO] [stderr]     Checking reqwest v0.9.24
[INFO] [stderr]     Checking web_ical v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:400:64
[INFO] [stdout]     |
[INFO] [stdout] 400 |             pub fn export_ics(&self, path: &str) -> io::Result<(bool)> { 
[INFO] [stdout]     |                                                                ^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:400:64
[INFO] [stdout]     |
[INFO] [stdout] 400 |             pub fn export_ics(&self, path: &str) -> io::Result<(bool)> { 
[INFO] [stdout]     |                                                                ^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `string_key` is never read
[INFO] [stdout]    --> src/lib.rs:154:21
[INFO] [stdout]     |
[INFO] [stdout] 154 |             let mut string_key = String::new();
[INFO] [stdout]     |                     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `string_key` is never read
[INFO] [stdout]    --> src/lib.rs:154:21
[INFO] [stdout]     |
[INFO] [stdout] 154 |             let mut string_key = String::new();
[INFO] [stdout]     |                     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 46.34s
[INFO] running `Command { std: "docker" "inspect" "c6a5d9b0be563eaf1e6cafe4e8e308ebd130f7686bf96c2042bdca7142fc8b61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6a5d9b0be563eaf1e6cafe4e8e308ebd130f7686bf96c2042bdca7142fc8b61", kill_on_drop: false }`
[INFO] [stdout] c6a5d9b0be563eaf1e6cafe4e8e308ebd130f7686bf96c2042bdca7142fc8b61