[INFO] cloning repository https://github.com/manueldeval/synth
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/manueldeval/synth" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmanueldeval%2Fsynth", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmanueldeval%2Fsynth'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ac9279d505136eeedace014ee9332dfa119eadd9
[INFO] checking manueldeval/synth against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmanueldeval%2Fsynth" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/manueldeval/synth 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 git repo https://github.com/manueldeval/synth
[INFO] finished tweaking git repo https://github.com/manueldeval/synth
[INFO] tweaked toml for git repo https://github.com/manueldeval/synth written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/manueldeval/synth 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] [stdout] 4fe06da5f0e2dcbf2fabad05a45a6fe49a0d89863b4e81840ba41b2f4b20f23e
[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" "4fe06da5f0e2dcbf2fabad05a45a6fe49a0d89863b4e81840ba41b2f4b20f23e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4fe06da5f0e2dcbf2fabad05a45a6fe49a0d89863b4e81840ba41b2f4b20f23e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fe06da5f0e2dcbf2fabad05a45a6fe49a0d89863b4e81840ba41b2f4b20f23e", kill_on_drop: false }`
[INFO] [stdout] 4fe06da5f0e2dcbf2fabad05a45a6fe49a0d89863b4e81840ba41b2f4b20f23e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8491bd91ed938b482c06877be3f7857b3be796f66a9e36affc743937237d817c
[INFO] running `Command { std: "docker" "start" "-a" "8491bd91ed938b482c06877be3f7857b3be796f66a9e36affc743937237d817c", kill_on_drop: false }`
[INFO] [stderr]     Checking strum v0.16.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling brotli-sys v0.3.2
[INFO] [stderr]    Compiling miniz-sys v0.1.12
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking socket2 v0.3.11
[INFO] [stderr]     Checking getrandom v0.1.12
[INFO] [stderr]     Checking signal-hook-registry v1.1.1
[INFO] [stderr]     Checking threadpool v1.7.1
[INFO] [stderr]     Checking alsa-sys v0.1.2
[INFO] [stderr]    Compiling cpal v0.10.0
[INFO] [stderr]     Checking num-integer v0.1.41
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling derive_more v0.15.0
[INFO] [stderr]    Compiling enum-as-inner v0.2.1
[INFO] [stderr]    Compiling actix-web-codegen v0.1.2
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]     Checking resolv-conf v0.6.2
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking signal-hook v0.1.10
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking crossbeam v0.7.2
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking http v0.1.18
[INFO] [stderr]     Checking string v0.2.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking flate2 v1.0.11
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking parking_lot_core v0.5.0
[INFO] [stderr]     Checking backtrace v0.3.35
[INFO] [stderr]     Checking tokio-reactor v0.1.10
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking bus v2.2.2
[INFO] [stderr]     Checking actix-codec v0.1.2
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio-udp v0.1.5
[INFO] [stderr]     Checking tokio-signal v0.2.7
[INFO] [stderr]     Checking actix-utils v0.4.5
[INFO] [stderr]     Checking actix-server-config v0.1.2
[INFO] [stderr]     Checking trust-dns-proto v0.7.4
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking trust-dns-resolver v0.11.1
[INFO] [stderr]     Checking actix-threadpool v0.1.2
[INFO] [stderr]     Checking actix-rt v0.2.5
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]    Compiling v_escape_derive v0.5.6
[INFO] [stderr]    Compiling strum_macros v0.16.0
[INFO] [stderr]     Checking actix-connect v0.2.5
[INFO] [stderr]     Checking actix-server v0.6.1
[INFO] [stderr]     Checking brotli2 v0.3.2
[INFO] [stderr]     Checking actix-testing v0.1.0
[INFO] [stderr]     Checking v_escape v0.7.4
[INFO] [stderr]     Checking v_htmlescape v0.4.5
[INFO] [stderr]     Checking serde v1.0.101
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking actix-router v0.1.5
[INFO] [stderr]     Checking serde_yaml v0.8.9
[INFO] [stderr]     Checking actix-http v0.2.10
[INFO] [stderr]     Checking awc v0.2.7
[INFO] [stderr]     Checking actix-web v1.0.8
[INFO] [stderr]     Checking actix-files v0.1.4
[INFO] [stderr]     Checking rustic_synth v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/patch/patch.rs:15:10
[INFO] [stdout]    |
[INFO] [stdout] 15 |   pub fn new() -> Patch {
[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: `from_json`
[INFO] [stdout]   --> src/patch/patch.rs:19:10
[INFO] [stdout]    |
[INFO] [stdout] 19 |   pub fn from_json(serialized: &String) -> Result<Patch,String> {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_json_file`
[INFO] [stdout]   --> src/patch/patch.rs:27:10
[INFO] [stdout]    |
[INFO] [stdout] 27 |   pub fn from_json_file<P: AsRef<Path>>(file_name: P) -> Result<Patch,String> {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_file`
[INFO] [stdout]   --> src/patch/patch.rs:44:10
[INFO] [stdout]    |
[INFO] [stdout] 44 |   pub fn from_file(file_name: &String) -> Result<Patch,String> {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_json`
[INFO] [stdout]   --> src/patch/patch.rs:55:10
[INFO] [stdout]    |
[INFO] [stdout] 55 |   pub fn to_json(&self) -> String {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_command`
[INFO] [stdout]   --> src/patch/patch.rs:63:10
[INFO] [stdout]    |
[INFO] [stdout] 63 |   pub fn add_command(&mut self, command: &SystemCommand) {
[INFO] [stdout]    |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/patch/patch.rs:15:10
[INFO] [stdout]    |
[INFO] [stdout] 15 |   pub fn new() -> Patch {
[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: `from_json`
[INFO] [stdout]   --> src/patch/patch.rs:19:10
[INFO] [stdout]    |
[INFO] [stdout] 19 |   pub fn from_json(serialized: &String) -> Result<Patch,String> {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_json_file`
[INFO] [stdout]   --> src/patch/patch.rs:27:10
[INFO] [stdout]    |
[INFO] [stdout] 27 |   pub fn from_json_file<P: AsRef<Path>>(file_name: P) -> Result<Patch,String> {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_file`
[INFO] [stdout]   --> src/patch/patch.rs:44:10
[INFO] [stdout]    |
[INFO] [stdout] 44 |   pub fn from_file(file_name: &String) -> Result<Patch,String> {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_json`
[INFO] [stdout]   --> src/patch/patch.rs:55:10
[INFO] [stdout]    |
[INFO] [stdout] 55 |   pub fn to_json(&self) -> String {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_command`
[INFO] [stdout]   --> src/patch/patch.rs:63:10
[INFO] [stdout]    |
[INFO] [stdout] 63 |   pub fn add_command(&mut self, command: &SystemCommand) {
[INFO] [stdout]    |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 37s
[INFO] running `Command { std: "docker" "inspect" "8491bd91ed938b482c06877be3f7857b3be796f66a9e36affc743937237d817c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8491bd91ed938b482c06877be3f7857b3be796f66a9e36affc743937237d817c", kill_on_drop: false }`
[INFO] [stdout] 8491bd91ed938b482c06877be3f7857b3be796f66a9e36affc743937237d817c