[INFO] cloning repository https://github.com/tompko/arendil
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tompko/arendil" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftompko%2Farendil", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftompko%2Farendil'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 170f67cb23d1c60c11b9ef5be11f6d56558cb351
[INFO] checking tompko/arendil against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftompko%2Farendil" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tompko/arendil on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tompko/arendil
[INFO] finished tweaking git repo https://github.com/tompko/arendil
[INFO] tweaked toml for git repo https://github.com/tompko/arendil written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/tompko/arendil already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-14/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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] 0971f55192052a635704effa74597bd8b365f52957158510c70dda48c47abea4
[INFO] running `Command { std: "docker" "start" "-a" "0971f55192052a635704effa74597bd8b365f52957158510c70dda48c47abea4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0971f55192052a635704effa74597bd8b365f52957158510c70dda48c47abea4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0971f55192052a635704effa74597bd8b365f52957158510c70dda48c47abea4", kill_on_drop: false }`
[INFO] [stdout] 0971f55192052a635704effa74597bd8b365f52957158510c70dda48c47abea4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ad142fba337737a4f3ff08e9872e1b943413dcf1dca09b9405338d69a96c2a0f
[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" "ad142fba337737a4f3ff08e9872e1b943413dcf1dca09b9405338d69a96c2a0f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking arendil v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Cursor`
[INFO] [stdout]  --> src/epd.rs:1:35
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{BufReader, BufRead, Cursor, Read};
[INFO] [stdout]   |                                   ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/epd.rs:17:21
[INFO] [stdout]    |
[INFO] [stdout] 17 |     reader: &'a mut Read,
[INFO] [stdout]    |                     ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/epd.rs:21:29
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn new(reader: &mut Read) -> EpdReader {
[INFO] [stdout]    |                             ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]   --> src/epd.rs:43:16
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn new(line: String) -> Result<Self, String> {
[INFO] [stdout]    |                ^^^^ help: if this is intentional, prefix it with an underscore: `_line`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `epd`
[INFO] [stdout]  --> src/perft.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn test(epd: &EpdReader) -> Result<(), String> {
[INFO] [stdout]   |             ^^^ help: if this is intentional, prefix it with an underscore: `_epd`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `EpdOperand`
[INFO] [stdout]  --> src/epd.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum EpdOperand {
[INFO] [stdout]   |          ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Epd`
[INFO] [stdout]   --> src/epd.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Epd {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `reader`
[INFO] [stdout]   --> src/epd.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     reader: &'a mut Read,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `decode`
[INFO] [stdout]   --> src/epd.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn decode(&mut self) -> Result<Vec<Epd>, String> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/epd.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn new(line: String) -> Result<Self, String> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Cursor`
[INFO] [stdout]  --> src/epd.rs:1:35
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{BufReader, BufRead, Cursor, Read};
[INFO] [stdout]   |                                   ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/epd.rs:17:21
[INFO] [stdout]    |
[INFO] [stdout] 17 |     reader: &'a mut Read,
[INFO] [stdout]    |                     ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/epd.rs:21:29
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn new(reader: &mut Read) -> EpdReader {
[INFO] [stdout]    |                             ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufRead`, `BufReader`, `Read`
[INFO] [stdout]   --> src/epd.rs:51:19
[INFO] [stdout]    |
[INFO] [stdout] 51 |     use std::io::{BufReader, BufRead, Cursor, Read};
[INFO] [stdout]    |                   ^^^^^^^^^  ^^^^^^^          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]   --> src/epd.rs:43:16
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn new(line: String) -> Result<Self, String> {
[INFO] [stdout]    |                ^^^^ help: if this is intentional, prefix it with an underscore: `_line`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `epd`
[INFO] [stdout]  --> src/perft.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn test(epd: &EpdReader) -> Result<(), String> {
[INFO] [stdout]   |             ^^^ help: if this is intentional, prefix it with an underscore: `_epd`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Str`
[INFO] [stdout]  --> src/epd.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Str(String),
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Move`
[INFO] [stdout]  --> src/epd.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Move(String),
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Unsigned`
[INFO] [stdout]  --> src/epd.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Unsigned(u32),
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Integer`
[INFO] [stdout]  --> src/epd.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Integer(i32),
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Float`
[INFO] [stdout]  --> src/epd.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Float(f32)
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `fen_string`
[INFO] [stdout]   --> src/epd.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fen_string: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `operations`
[INFO] [stdout]   --> src/epd.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     operations: Vec<EpdOperand>
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.80s
[INFO] running `Command { std: "docker" "inspect" "ad142fba337737a4f3ff08e9872e1b943413dcf1dca09b9405338d69a96c2a0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad142fba337737a4f3ff08e9872e1b943413dcf1dca09b9405338d69a96c2a0f", kill_on_drop: false }`
[INFO] [stdout] ad142fba337737a4f3ff08e9872e1b943413dcf1dca09b9405338d69a96c2a0f