[INFO] cloning repository https://github.com/SerSamgy/gnome-wallpaperz
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SerSamgy/gnome-wallpaperz" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSerSamgy%2Fgnome-wallpaperz", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSerSamgy%2Fgnome-wallpaperz'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7012f862b76a607305b4b5236c48df53fbbeac47
[INFO] checking SerSamgy/gnome-wallpaperz against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSerSamgy%2Fgnome-wallpaperz" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SerSamgy/gnome-wallpaperz on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SerSamgy/gnome-wallpaperz
[INFO] finished tweaking git repo https://github.com/SerSamgy/gnome-wallpaperz
[INFO] tweaked toml for git repo https://github.com/SerSamgy/gnome-wallpaperz written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/SerSamgy/gnome-wallpaperz 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ucd-trie v0.1.2
[INFO] [stderr]   Downloaded ignore v0.4.11
[INFO] [stderr]   Downloaded aho-corasick v0.7.8
[INFO] [stderr]   Downloaded parse-zoneinfo v0.2.1
[INFO] [stderr]   Downloaded humansize v1.1.0
[INFO] [stderr]   Downloaded pest_generator v2.1.1
[INFO] [stderr]   Downloaded globset v0.4.4
[INFO] [stderr]   Downloaded crossbeam-channel v0.4.0
[INFO] [stderr]   Downloaded globwalk v0.7.1
[INFO] [stderr]   Downloaded chrono-tz v0.5.1
[INFO] [stderr]   Downloaded pest v2.1.2
[INFO] [stderr]   Downloaded pest_meta v2.1.2
[INFO] [stderr]   Downloaded serde_json v1.0.47
[INFO] [stderr]   Downloaded tera v1.0.2
[INFO] [stderr]   Downloaded bstr v0.2.11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e26c066a3f265ac852c1c68e7714063c5b2be43c9d4a9dfeee36ae273a947190
[INFO] running `Command { std: "docker" "start" "-a" "e26c066a3f265ac852c1c68e7714063c5b2be43c9d4a9dfeee36ae273a947190", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e26c066a3f265ac852c1c68e7714063c5b2be43c9d4a9dfeee36ae273a947190", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e26c066a3f265ac852c1c68e7714063c5b2be43c9d4a9dfeee36ae273a947190", kill_on_drop: false }`
[INFO] [stdout] e26c066a3f265ac852c1c68e7714063c5b2be43c9d4a9dfeee36ae273a947190
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dfb533dded37b81508fefb6a82be72ebe74d1d77318ceff11143035aa8495e2b
[INFO] running `Command { std: "docker" "start" "-a" "dfb533dded37b81508fefb6a82be72ebe74d1d77318ceff11143035aa8495e2b", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling regex-syntax v0.6.14
[INFO] [stderr]    Compiling ucd-trie v0.1.2
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]     Checking unic-common v0.9.0
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]     Checking unic-char-range v0.9.0
[INFO] [stderr]    Compiling pest v2.1.2
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]     Checking unic-char-property v0.9.0
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking unic-ucd-version v0.9.0
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]     Checking unic-ucd-segment v0.9.0
[INFO] [stderr]     Checking deunicode v0.4.3
[INFO] [stderr]    Compiling anyhow v1.0.27
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking aho-corasick v0.7.8
[INFO] [stderr]     Checking bstr v0.2.11
[INFO] [stderr]     Checking slug v0.1.4
[INFO] [stderr]    Compiling pest_meta v2.1.2
[INFO] [stderr]     Checking humansize v1.1.0
[INFO] [stderr]     Checking unic-segment v0.9.0
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking crossbeam-channel v0.4.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]    Compiling pest_generator v2.1.1
[INFO] [stderr]     Checking globset v0.4.4
[INFO] [stderr]    Compiling parse-zoneinfo v0.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking ignore v0.4.11
[INFO] [stderr]     Checking globwalk v0.7.1
[INFO] [stderr]    Compiling chrono-tz v0.5.1
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking serde_json v1.0.47
[INFO] [stderr]     Checking tera v1.0.2
[INFO] [stderr]     Checking gnome_wallpaperz v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `HashMap` is imported redundantly
[INFO] [stdout]   --> src/filters.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     use std::collections::HashMap;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     use super::*;
[INFO] [stdout]    |         -------- the item `HashMap` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `to_value` is imported redundantly
[INFO] [stdout]   --> src/filters.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     use serde_json::value::to_value;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 36 |
[INFO] [stdout] 37 |     use super::*;
[INFO] [stdout]    |         -------- the item `to_value` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.07s
[INFO] running `Command { std: "docker" "inspect" "dfb533dded37b81508fefb6a82be72ebe74d1d77318ceff11143035aa8495e2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfb533dded37b81508fefb6a82be72ebe74d1d77318ceff11143035aa8495e2b", kill_on_drop: false }`
[INFO] [stdout] dfb533dded37b81508fefb6a82be72ebe74d1d77318ceff11143035aa8495e2b
[INFO] checking SerSamgy/gnome-wallpaperz against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSerSamgy%2Fgnome-wallpaperz" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SerSamgy/gnome-wallpaperz on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SerSamgy/gnome-wallpaperz
[INFO] finished tweaking git repo https://github.com/SerSamgy/gnome-wallpaperz
[INFO] tweaked toml for git repo https://github.com/SerSamgy/gnome-wallpaperz written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/SerSamgy/gnome-wallpaperz 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bf943c89fb96a4367b992a15023b53d4f49848c9dccfa50819452f59bb7edfd8
[INFO] running `Command { std: "docker" "start" "-a" "bf943c89fb96a4367b992a15023b53d4f49848c9dccfa50819452f59bb7edfd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf943c89fb96a4367b992a15023b53d4f49848c9dccfa50819452f59bb7edfd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf943c89fb96a4367b992a15023b53d4f49848c9dccfa50819452f59bb7edfd8", kill_on_drop: false }`
[INFO] [stdout] bf943c89fb96a4367b992a15023b53d4f49848c9dccfa50819452f59bb7edfd8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c49265bec6e964d16ffef6d51f27149d6d5eb5137111a6b71b2141af4c0bed3
[INFO] running `Command { std: "docker" "start" "-a" "0c49265bec6e964d16ffef6d51f27149d6d5eb5137111a6b71b2141af4c0bed3", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling regex-syntax v0.6.14
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling ucd-trie v0.1.2
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]     Checking unic-common v0.9.0
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]     Checking unic-char-range v0.9.0
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]     Checking unic-char-property v0.9.0
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]    Compiling pest v2.1.2
[INFO] [stderr]     Checking unic-ucd-version v0.9.0
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking unic-ucd-segment v0.9.0
[INFO] [stderr]     Checking deunicode v0.4.3
[INFO] [stderr]    Compiling anyhow v1.0.27
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking slug v0.1.4
[INFO] [stderr]     Checking humansize v1.1.0
[INFO] [stderr]     Checking crossbeam-channel v0.4.0
[INFO] [stderr]     Checking aho-corasick v0.7.8
[INFO] [stderr]     Checking bstr v0.2.11
[INFO] [stderr]     Checking unic-segment v0.9.0
[INFO] [stderr]    Compiling pest_meta v2.1.2
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking globset v0.4.4
[INFO] [stderr]    Compiling parse-zoneinfo v0.2.1
[INFO] [stderr]     Checking ignore v0.4.11
[INFO] [stderr]    Compiling pest_generator v2.1.1
[INFO] [stderr]     Checking globwalk v0.7.1
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling chrono-tz v0.5.1
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking serde_json v1.0.47
[INFO] [stderr]     Checking tera v1.0.2
[INFO] [stderr]     Checking gnome_wallpaperz v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `HashMap` is imported redundantly
[INFO] [stdout]   --> src/filters.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     use std::collections::HashMap;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     use super::*;
[INFO] [stdout]    |         -------- the item `HashMap` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `to_value` is imported redundantly
[INFO] [stdout]   --> src/filters.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     use serde_json::value::to_value;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 36 |
[INFO] [stdout] 37 |     use super::*;
[INFO] [stdout]    |         -------- the item `to_value` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 24.72s
[INFO] running `Command { std: "docker" "inspect" "0c49265bec6e964d16ffef6d51f27149d6d5eb5137111a6b71b2141af4c0bed3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c49265bec6e964d16ffef6d51f27149d6d5eb5137111a6b71b2141af4c0bed3", kill_on_drop: false }`
[INFO] [stdout] 0c49265bec6e964d16ffef6d51f27149d6d5eb5137111a6b71b2141af4c0bed3