[INFO] cloning repository https://github.com/Hermitter/mangarip
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Hermitter/mangarip" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHermitter%2Fmangarip", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHermitter%2Fmangarip'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 825f8167f737457980f5756f4174506e0cebca57
[INFO] checking Hermitter/mangarip against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHermitter%2Fmangarip" "/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/Hermitter/mangarip on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Hermitter/mangarip
[INFO] finished tweaking git repo https://github.com/Hermitter/mangarip
[INFO] tweaked toml for git repo https://github.com/Hermitter/mangarip written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/Hermitter/mangarip already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "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 ...
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[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "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] 44e2c64dec8948726728642ae2abdb62a92e60b08ae553eb2f29c36f4256df4b
[INFO] running `Command { std: "docker" "start" "-a" "44e2c64dec8948726728642ae2abdb62a92e60b08ae553eb2f29c36f4256df4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "44e2c64dec8948726728642ae2abdb62a92e60b08ae553eb2f29c36f4256df4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44e2c64dec8948726728642ae2abdb62a92e60b08ae553eb2f29c36f4256df4b", kill_on_drop: false }`
[INFO] [stdout] 44e2c64dec8948726728642ae2abdb62a92e60b08ae553eb2f29c36f4256df4b
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "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] 1ba053e635c3b33ea5342e756c35ff705e104f728967bd0e25c6fcc6d8f412a1
[INFO] running `Command { std: "docker" "start" "-a" "1ba053e635c3b33ea5342e756c35ff705e104f728967bd0e25c6fcc6d8f412a1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.7
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling cc v1.0.49
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling siphasher v0.3.1
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking smallvec v1.1.0
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking futures-core v0.3.1
[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling itoa v0.4.4
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]    Compiling proc-macro-nested v0.1.3
[INFO] [stderr]     Checking utf-8 v0.7.5
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[INFO] [stderr]     Checking adler32 v1.0.4
[INFO] [stderr]     Checking futures-sink v0.3.1
[INFO] [stderr]    Compiling curl v0.4.25
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[INFO] [stderr]     Checking percent-encoding v2.1.0
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[INFO] [stderr]     Checking once_cell v1.2.0
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[INFO] [stderr]     Checking thread_local v0.3.6
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[INFO] [stderr]    Compiling phf_shared v0.8.0
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[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking dtoa-short v0.3.2
[INFO] [stderr]    Compiling c2-chacha v0.2.3
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking unicode-normalization v0.1.11
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-rational v0.2.3
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]     Checking servo_arc v0.1.1
[INFO] [stderr]     Checking futures-channel v0.3.1
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]     Checking gif v0.10.3
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking tendril v0.4.1
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking sluice v0.4.2
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking socket2 v0.3.11
[INFO] [stderr]     Checking termios v0.3.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clicolors-control v1.0.1
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking kv-log-macro v1.0.4
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.2
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling openssl-sys v0.9.53
[INFO] [stderr]    Compiling curl-sys v0.4.24
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking http v0.1.21
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]     Checking async-task v1.1.1
[INFO] [stderr]     Checking crossbeam-channel v0.4.0
[INFO] [stderr]     Checking png v0.15.3
[INFO] [stderr]    Compiling mime_guess v2.0.1
[INFO] [stderr]     Checking url v2.1.0
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]     Checking console v0.9.1
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]     Checking indicatif v0.13.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.2
[INFO] [stderr]     Checking async-std v1.4.0
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling string_cache_codegen v0.5.1
[INFO] [stderr]     Checking string_cache v0.8.0
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]    Compiling selectors v0.22.0
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking jpeg-decoder v0.1.18
[INFO] [stderr]     Checking tiff v0.3.1
[INFO] [stderr]    Compiling syn-mid v0.4.0
[INFO] [stderr]     Checking image v0.22.4
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling rustversion v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling cssparser v0.27.2
[INFO] [stderr]    Compiling cssparser-macros v0.6.0
[INFO] [stderr]    Compiling html5ever v0.25.1
[INFO] [stderr]    Compiling derive_more v0.99.2
[INFO] [stderr]    Compiling tokio-macros v0.2.3
[INFO] [stderr]     Checking tokio v0.2.9
[INFO] [stderr]    Compiling proc-macro-error v0.4.4
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.3
[INFO] [stderr]    Compiling phf_macros v0.8.0
[INFO] [stderr]    Compiling futures-macro v0.3.1
[INFO] [stderr]    Compiling structopt-derive v0.4.0
[INFO] [stderr]     Checking surf v1.0.3
[INFO] [stderr]     Checking futures-util v0.3.1
[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]    Compiling markup5ever v0.10.0
[INFO] [stderr]     Checking futures-executor v0.3.1
[INFO] [stderr]     Checking structopt v0.3.7
[INFO] [stderr]     Checking futures v0.3.1
[INFO] [stderr]     Checking kuchiki v0.8.0
[INFO] [stderr]     Checking mangarip v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `str::Utf8Error`
[INFO] [stdout]  --> src/error.rs:1:42
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{error::Error as StdError, fmt, str::Utf8Error};
[INFO] [stdout]   |                                          ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `str::Utf8Error`
[INFO] [stdout]  --> src/error.rs:1:42
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{error::Error as StdError, fmt, str::Utf8Error};
[INFO] [stdout]   |                                          ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> src/scrape.rs:105:38
[INFO] [stdout]     |
[INFO] [stdout] 105 |     pub async fn get_chapters(&self, start: u32, end: u32) -> Result<Vec<Vec<Vec<u8>>>, Error> {
[INFO] [stdout]     |                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end`
[INFO] [stdout]    --> src/scrape.rs:105:50
[INFO] [stdout]     |
[INFO] [stdout] 105 |     pub async fn get_chapters(&self, start: u32, end: u32) -> Result<Vec<Vec<Vec<u8>>>, Error> {
[INFO] [stdout]     |                                                  ^^^ help: if this is intentional, prefix it with an underscore: `_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/scrape.rs:64:13
[INFO] [stdout]    |
[INFO] [stdout] 64 |             &mut urls.reverse();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> src/scrape.rs:105:38
[INFO] [stdout]     |
[INFO] [stdout] 105 |     pub async fn get_chapters(&self, start: u32, end: u32) -> Result<Vec<Vec<Vec<u8>>>, Error> {
[INFO] [stdout]     |                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end`
[INFO] [stdout]    --> src/scrape.rs:105:50
[INFO] [stdout]     |
[INFO] [stdout] 105 |     pub async fn get_chapters(&self, start: u32, end: u32) -> Result<Vec<Vec<Vec<u8>>>, Error> {
[INFO] [stdout]     |                                                  ^^^ help: if this is intentional, prefix it with an underscore: `_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/scrape.rs:64:13
[INFO] [stdout]    |
[INFO] [stdout] 64 |             &mut urls.reverse();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `io`, `task`
[INFO] [stdout]  --> src/main.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use async_std::{io, prelude::*, task};
[INFO] [stdout]   |                 ^^              ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `image::GenericImageView`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use image::GenericImageView;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::prelude::*`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use tokio::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `io`, `task`
[INFO] [stdout]  --> src/main.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use async_std::{io, prelude::*, task};
[INFO] [stdout]   |                 ^^              ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `image::GenericImageView`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use image::GenericImageView;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::prelude::*`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use tokio::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `prelude`
[INFO] [stdout]  --> src/main.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use async_std::{io, prelude::*, task};
[INFO] [stdout]   |                     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `prelude`
[INFO] [stdout]  --> src/main.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use async_std::{io, prelude::*, task};
[INFO] [stdout]   |                     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 27s
[INFO] running `Command { std: "docker" "inspect" "1ba053e635c3b33ea5342e756c35ff705e104f728967bd0e25c6fcc6d8f412a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ba053e635c3b33ea5342e756c35ff705e104f728967bd0e25c6fcc6d8f412a1", kill_on_drop: false }`
[INFO] [stdout] 1ba053e635c3b33ea5342e756c35ff705e104f728967bd0e25c6fcc6d8f412a1