[INFO] cloning repository https://github.com/takuho0115/node_expr_test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/takuho0115/node_expr_test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftakuho0115%2Fnode_expr_test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftakuho0115%2Fnode_expr_test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 562ad939ec57da95d7bd8685d4d4d77633aad9e8
[INFO] checking takuho0115/node_expr_test against try#5de9e0e6cf775e94e0de2003f35e183f3f77bfe8 for pr-143808
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftakuho0115%2Fnode_expr_test" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/takuho0115/node_expr_test
[INFO] finished tweaking git repo https://github.com/takuho0115/node_expr_test
[INFO] tweaked toml for git repo https://github.com/takuho0115/node_expr_test written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/takuho0115/node_expr_test on toolchain 5de9e0e6cf775e94e0de2003f35e183f3f77bfe8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/takuho0115/node_expr_test 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" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2a5098e64d17838913efec68bce03f3b277ea699c5de86861c137060bf29bc1d
[INFO] running `Command { std: "docker" "start" "-a" "2a5098e64d17838913efec68bce03f3b277ea699c5de86861c137060bf29bc1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a5098e64d17838913efec68bce03f3b277ea699c5de86861c137060bf29bc1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a5098e64d17838913efec68bce03f3b277ea699c5de86861c137060bf29bc1d", kill_on_drop: false }`
[INFO] [stdout] 2a5098e64d17838913efec68bce03f3b277ea699c5de86861c137060bf29bc1d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ba0810c3e84f2b2003e896242274678d0d0cd5021144546ba4abc8104a51b59
[INFO] running `Command { std: "docker" "start" "-a" "6ba0810c3e84f2b2003e896242274678d0d0cd5021144546ba4abc8104a51b59", kill_on_drop: false }`
[INFO] [stderr]     Checking node_expr_test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `swap` is never used
[INFO] [stdout]    --> src/node.rs:154:9
[INFO] [stdout]     |
[INFO] [stdout] 30  | impl Node{
[INFO] [stdout]     | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 154 |     pub fn swap(&self)->Self{
[INFO] [stdout]     |            ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `list` is never read
[INFO] [stdout]   --> src/./tokenlist.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub struct TokenList{
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 9  |     pub original: String,
[INFO] [stdout] 10 |     pub list: Vec<Token>,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenList` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `pos` is never read
[INFO] [stdout]   --> src/./token.rs:13:6
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Token{
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 13 |     pub pos: Option<usize>,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `at_eof` is never used
[INFO] [stdout]   --> src/./token.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl Token{
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 39 |     pub fn at_eof(&self)->bool{
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `swap` is never used
[INFO] [stdout]    --> src/node.rs:154:9
[INFO] [stdout]     |
[INFO] [stdout] 30  | impl Node{
[INFO] [stdout]     | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 154 |     pub fn swap(&self)->Self{
[INFO] [stdout]     |            ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `list` is never read
[INFO] [stdout]   --> src/./tokenlist.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub struct TokenList{
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 9  |     pub original: String,
[INFO] [stdout] 10 |     pub list: Vec<Token>,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenList` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `pos` is never read
[INFO] [stdout]   --> src/./token.rs:13:6
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Token{
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 13 |     pub pos: Option<usize>,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `at_eof` is never used
[INFO] [stdout]   --> src/./token.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl Token{
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 39 |     pub fn at_eof(&self)->bool{
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "6ba0810c3e84f2b2003e896242274678d0d0cd5021144546ba4abc8104a51b59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ba0810c3e84f2b2003e896242274678d0d0cd5021144546ba4abc8104a51b59", kill_on_drop: false }`
[INFO] [stdout] 6ba0810c3e84f2b2003e896242274678d0d0cd5021144546ba4abc8104a51b59