[INFO] cloning repository https://github.com/juggernaut0/snek
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/juggernaut0/snek" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjuggernaut0%2Fsnek", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjuggernaut0%2Fsnek'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 49c64b3de6c848a7253d4c04dc9a5d46b5280139
[INFO] checking juggernaut0/snek against try#1f5783cbeb5da8b38566d718631d016891e9c912 for pr-142704
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjuggernaut0%2Fsnek" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/juggernaut0/snek on toolchain 1f5783cbeb5da8b38566d718631d016891e9c912
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f5783cbeb5da8b38566d718631d016891e9c912" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/juggernaut0/snek
[INFO] finished tweaking git repo https://github.com/juggernaut0/snek
[INFO] tweaked toml for git repo https://github.com/juggernaut0/snek written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/juggernaut0/snek 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" "+1f5783cbeb5da8b38566d718631d016891e9c912" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+1f5783cbeb5da8b38566d718631d016891e9c912" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 84f2ce75519d530385b85378d129f9ae9cc38fa050ff2aa4fb9c3859f2dca54c
[INFO] running `Command { std: "docker" "start" "-a" "84f2ce75519d530385b85378d129f9ae9cc38fa050ff2aa4fb9c3859f2dca54c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84f2ce75519d530385b85378d129f9ae9cc38fa050ff2aa4fb9c3859f2dca54c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84f2ce75519d530385b85378d129f9ae9cc38fa050ff2aa4fb9c3859f2dca54c", kill_on_drop: false }`
[INFO] [stdout] 84f2ce75519d530385b85378d129f9ae9cc38fa050ff2aa4fb9c3859f2dca54c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+1f5783cbeb5da8b38566d718631d016891e9c912" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8c6e5d31157f6552afd1fdc3a306aae4d2bffe4f219f0fc47c655c274332f05b
[INFO] running `Command { std: "docker" "start" "-a" "8c6e5d31157f6552afd1fdc3a306aae4d2bffe4f219f0fc47c655c274332f05b", kill_on_drop: false }`
[INFO] [stderr]     Checking snek v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variants `IDENT`, `STRING`, `KEYWORD`, and `SYMBOL` are never constructed
[INFO] [stdout]    --> src/scanner.rs:171:5
[INFO] [stdout]     |
[INFO] [stdout] 168 | pub enum TokenName {
[INFO] [stdout]     |          --------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 171 |     IDENT,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 172 |     NUMBER,
[INFO] [stdout] 173 |     STRING,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 174 |     KEYWORD,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 175 |     SYMBOL,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `TokenName` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `IDENT`, `STRING`, `KEYWORD`, and `SYMBOL` are never constructed
[INFO] [stdout]    --> src/scanner.rs:171:5
[INFO] [stdout]     |
[INFO] [stdout] 168 | pub enum TokenName {
[INFO] [stdout]     |          --------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 171 |     IDENT,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 172 |     NUMBER,
[INFO] [stdout] 173 |     STRING,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 174 |     KEYWORD,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 175 |     SYMBOL,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `TokenName` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `value`, `line`, and `col` are never read
[INFO] [stdout]    --> src/scanner.rs:182:5
[INFO] [stdout]     |
[INFO] [stdout] 180 | pub struct Token {
[INFO] [stdout]     |            ----- fields in this struct
[INFO] [stdout] 181 |     name: TokenName,
[INFO] [stdout] 182 |     value: String,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 183 |     line: u32,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 184 |     col: u32
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Token` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `message`, `line`, and `col` are never read
[INFO] [stdout]   --> src/parse.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct ParseError {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 22 |     message: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 23 |     line: u32,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 24 |     col: u32
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ParseError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `value`, `line`, and `col` are never read
[INFO] [stdout]    --> src/scanner.rs:182:5
[INFO] [stdout]     |
[INFO] [stdout] 180 | pub struct Token {
[INFO] [stdout]     |            ----- fields in this struct
[INFO] [stdout] 181 |     name: TokenName,
[INFO] [stdout] 182 |     value: String,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 183 |     line: u32,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 184 |     col: u32
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Token` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `message`, `line`, and `col` are never read
[INFO] [stdout]   --> src/parse.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct ParseError {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 22 |     message: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 23 |     line: u32,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 24 |     col: u32
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ParseError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/scanner.rs:17:21
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn new(src: &str) -> Scanner {
[INFO] [stdout]    |                     ^^^^     ------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn new(src: &str) -> Scanner<'_> {
[INFO] [stdout]    |                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/scanner.rs:17:21
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn new(src: &str) -> Scanner {
[INFO] [stdout]    |                     ^^^^     ------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn new(src: &str) -> Scanner<'_> {
[INFO] [stdout]    |                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "8c6e5d31157f6552afd1fdc3a306aae4d2bffe4f219f0fc47c655c274332f05b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c6e5d31157f6552afd1fdc3a306aae4d2bffe4f219f0fc47c655c274332f05b", kill_on_drop: false }`
[INFO] [stdout] 8c6e5d31157f6552afd1fdc3a306aae4d2bffe4f219f0fc47c655c274332f05b
