[INFO] cloning repository https://github.com/Toasa/monkey_by_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Toasa/monkey_by_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FToasa%2Fmonkey_by_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FToasa%2Fmonkey_by_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f1a11dde471394148a8b3f887b5b380bf09e9683
[INFO] checking Toasa/monkey_by_rust against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FToasa%2Fmonkey_by_rust" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Toasa/monkey_by_rust 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/Toasa/monkey_by_rust
[INFO] finished tweaking git repo https://github.com/Toasa/monkey_by_rust
[INFO] tweaked toml for git repo https://github.com/Toasa/monkey_by_rust written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Toasa/monkey_by_rust 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 2dd5518c4cf102007d67a7db8ab47c6f5fa5ba6caa6416abbba9f5d3806ae3d6
[INFO] running `Command { std: "docker" "start" "-a" "2dd5518c4cf102007d67a7db8ab47c6f5fa5ba6caa6416abbba9f5d3806ae3d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2dd5518c4cf102007d67a7db8ab47c6f5fa5ba6caa6416abbba9f5d3806ae3d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2dd5518c4cf102007d67a7db8ab47c6f5fa5ba6caa6416abbba9f5d3806ae3d6", kill_on_drop: false }`
[INFO] [stdout] 2dd5518c4cf102007d67a7db8ab47c6f5fa5ba6caa6416abbba9f5d3806ae3d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] a93c054ca93a2a56c1e6ce1480f31b61c97ee31ed34397b279e4a53c064b64ba
[INFO] running `Command { std: "docker" "start" "-a" "a93c054ca93a2a56c1e6ce1480f31b61c97ee31ed34397b279e4a53c064b64ba", kill_on_drop: false }`
[INFO] [stderr]     Checking monkey_by_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]   --> src/ast.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub struct Let {
[INFO] [stdout]    |            --- field in this struct
[INFO] [stdout] 76 |     pub token: token::Token,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Let` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]   --> src/ast.rs:89:9
[INFO] [stdout]    |
[INFO] [stdout] 88 | pub struct Return {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 89 |     pub token: token::Token,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Return` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:101:9
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub struct ExprStmt {
[INFO] [stdout]     |            -------- field in this struct
[INFO] [stdout] 101 |     pub token: token::Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ExprStmt` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:113:9
[INFO] [stdout]     |
[INFO] [stdout] 112 | pub struct Block {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] 113 |     pub token: token::Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Block` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:128:9
[INFO] [stdout]     |
[INFO] [stdout] 127 | pub struct Ident {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] 128 |     pub token: token::Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Ident` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:140:9
[INFO] [stdout]     |
[INFO] [stdout] 139 | pub struct Int {
[INFO] [stdout]     |            --- field in this struct
[INFO] [stdout] 140 |     pub token: token::Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Int` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:152:9
[INFO] [stdout]     |
[INFO] [stdout] 151 | pub struct Prefix {
[INFO] [stdout]     |            ------ field in this struct
[INFO] [stdout] 152 |     pub token: token::Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Prefix` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:165:9
[INFO] [stdout]     |
[INFO] [stdout] 164 | pub struct Infix {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] 165 |     pub token: token::Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Infix` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:179:9
[INFO] [stdout]     |
[INFO] [stdout] 178 | pub struct Bool {
[INFO] [stdout]     |            ---- field in this struct
[INFO] [stdout] 179 |     pub token: token::Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Bool` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:191:9
[INFO] [stdout]     |
[INFO] [stdout] 190 | pub struct If {
[INFO] [stdout]     |            -- field in this struct
[INFO] [stdout] 191 |     pub token: token::Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `If` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:209:9
[INFO] [stdout]     |
[INFO] [stdout] 208 | pub struct Func {
[INFO] [stdout]     |            ---- field in this struct
[INFO] [stdout] 209 |     pub token: token::Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Func` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:228:9
[INFO] [stdout]     |
[INFO] [stdout] 227 | pub struct Call {
[INFO] [stdout]     |            ---- field in this struct
[INFO] [stdout] 228 |     pub token: token::Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Call` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:101:9
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub struct ExprStmt {
[INFO] [stdout]     |            -------- field in this struct
[INFO] [stdout] 101 |     pub token: token::Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ExprStmt` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:113:9
[INFO] [stdout]     |
[INFO] [stdout] 112 | pub struct Block {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] 113 |     pub token: token::Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Block` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:140:9
[INFO] [stdout]     |
[INFO] [stdout] 139 | pub struct Int {
[INFO] [stdout]     |            --- field in this struct
[INFO] [stdout] 140 |     pub token: token::Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Int` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:152:9
[INFO] [stdout]     |
[INFO] [stdout] 151 | pub struct Prefix {
[INFO] [stdout]     |            ------ field in this struct
[INFO] [stdout] 152 |     pub token: token::Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Prefix` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:165:9
[INFO] [stdout]     |
[INFO] [stdout] 164 | pub struct Infix {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] 165 |     pub token: token::Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Infix` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:179:9
[INFO] [stdout]     |
[INFO] [stdout] 178 | pub struct Bool {
[INFO] [stdout]     |            ---- field in this struct
[INFO] [stdout] 179 |     pub token: token::Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Bool` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:191:9
[INFO] [stdout]     |
[INFO] [stdout] 190 | pub struct If {
[INFO] [stdout]     |            -- field in this struct
[INFO] [stdout] 191 |     pub token: token::Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `If` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:209:9
[INFO] [stdout]     |
[INFO] [stdout] 208 | pub struct Func {
[INFO] [stdout]     |            ---- field in this struct
[INFO] [stdout] 209 |     pub token: token::Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Func` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:228:9
[INFO] [stdout]     |
[INFO] [stdout] 227 | pub struct Call {
[INFO] [stdout]     |            ---- field in this struct
[INFO] [stdout] 228 |     pub token: token::Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Call` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `Command { std: "docker" "inspect" "a93c054ca93a2a56c1e6ce1480f31b61c97ee31ed34397b279e4a53c064b64ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a93c054ca93a2a56c1e6ce1480f31b61c97ee31ed34397b279e4a53c064b64ba", kill_on_drop: false }`
[INFO] [stdout] a93c054ca93a2a56c1e6ce1480f31b61c97ee31ed34397b279e4a53c064b64ba