[INFO] cloning repository https://github.com/m-r-hunt/nail
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/m-r-hunt/nail" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fm-r-hunt%2Fnail", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fm-r-hunt%2Fnail'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5f13eb9385272c94824c81f26255c4ea05518d79
[INFO] testing m-r-hunt/nail against 1.99.0-beta.1+cargoflags=--release for beta-release-1.99-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fm-r-hunt%2Fnail" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/m-r-hunt/nail
[INFO] finished tweaking git repo https://github.com/m-r-hunt/nail
[INFO] tweaked toml for git repo https://github.com/m-r-hunt/nail written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/m-r-hunt/nail on toolchain 1.99.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/m-r-hunt/nail 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" "+1.99.0-beta.1" "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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded memchr v2.1.1
[INFO] [stderr]   Downloaded num v0.2.0
[INFO] [stderr]   Downloaded num-traits v0.2.6
[INFO] [stderr]   Downloaded num-iter v0.1.37
[INFO] [stderr]   Downloaded num-integer v0.1.39
[INFO] [stderr]   Downloaded num-complex v0.2.1
[INFO] [stderr]   Downloaded num-rational v0.2.1
[INFO] [stderr]   Downloaded num-bigint v0.2.1
[INFO] [stderr]   Downloaded regex-syntax v0.6.4
[INFO] [stderr]   Downloaded libc v0.2.44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 1115715c3e415636d4d3ff74b6e58ebfef38f525c3b50530f1c9b564fcb3d11c
[INFO] running `Command { std: "docker" "start" "1115715c3e415636d4d3ff74b6e58ebfef38f525c3b50530f1c9b564fcb3d11c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1115715c3e415636d4d3ff74b6e58ebfef38f525c3b50530f1c9b564fcb3d11c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "1115715c3e415636d4d3ff74b6e58ebfef38f525c3b50530f1c9b564fcb3d11c" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1115715c3e415636d4d3ff74b6e58ebfef38f525c3b50530f1c9b564fcb3d11c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "1115715c3e415636d4d3ff74b6e58ebfef38f525c3b50530f1c9b564fcb3d11c" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling libc v0.2.44
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling num-bigint v0.2.1
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling regex-syntax v0.6.4
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling nail v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `line` is never read
[INFO] [stdout]   --> src/parser.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct Grouping {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] 38 |     pub expression: Box<Expression>,
[INFO] [stdout] 39 |     pub line: usize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Grouping` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `line` is never read
[INFO] [stdout]    --> src/parser.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 141 | pub struct MapInitializer {
[INFO] [stdout]     |            -------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 144 |     pub line: usize,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `MapInitializer` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `line` is never read
[INFO] [stdout]    --> src/parser.rs:214:9
[INFO] [stdout]     |
[INFO] [stdout] 211 | pub struct ConstStatement {
[INFO] [stdout]     |            -------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 214 |     pub line: usize,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ConstStatement` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 29.84s
[INFO] running `Command { std: "docker" "inspect" "1115715c3e415636d4d3ff74b6e58ebfef38f525c3b50530f1c9b564fcb3d11c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "1115715c3e415636d4d3ff74b6e58ebfef38f525c3b50530f1c9b564fcb3d11c" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "test" "--frozen" "--no-run" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stdout] warning: field `line` is never read
[INFO] [stdout]   --> src/parser.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct Grouping {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] 38 |     pub expression: Box<Expression>,
[INFO] [stdout] 39 |     pub line: usize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Grouping` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling nail v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `line` is never read
[INFO] [stdout]    --> src/parser.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 141 | pub struct MapInitializer {
[INFO] [stdout]     |            -------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 144 |     pub line: usize,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `MapInitializer` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `line` is never read
[INFO] [stdout]    --> src/parser.rs:214:9
[INFO] [stdout]     |
[INFO] [stdout] 211 | pub struct ConstStatement {
[INFO] [stdout]     |            -------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 214 |     pub line: usize,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ConstStatement` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `line` is never read
[INFO] [stdout]   --> src/parser.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct Grouping {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] 38 |     pub expression: Box<Expression>,
[INFO] [stdout] 39 |     pub line: usize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Grouping` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `line` is never read
[INFO] [stdout]    --> src/parser.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 141 | pub struct MapInitializer {
[INFO] [stdout]     |            -------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 144 |     pub line: usize,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `MapInitializer` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `line` is never read
[INFO] [stdout]    --> src/parser.rs:214:9
[INFO] [stdout]     |
[INFO] [stdout] 211 | pub struct ConstStatement {
[INFO] [stdout]     |            -------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 214 |     pub line: usize,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ConstStatement` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.84s
[INFO] running `Command { std: "docker" "inspect" "1115715c3e415636d4d3ff74b6e58ebfef38f525c3b50530f1c9b564fcb3d11c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "1115715c3e415636d4d3ff74b6e58ebfef38f525c3b50530f1c9b564fcb3d11c" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "test" "--frozen" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: field `line` is never read
[INFO] [stderr]   --> src/parser.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub struct Grouping {
[INFO] [stderr]    |            -------- field in this struct
[INFO] [stderr] 38 |     pub expression: Box<Expression>,
[INFO] [stderr] 39 |     pub line: usize,
[INFO] [stderr]    |         ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Grouping` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `line` is never read
[INFO] [stderr]    --> src/parser.rs:144:9
[INFO] [stderr]     |
[INFO] [stderr] 141 | pub struct MapInitializer {
[INFO] [stderr]     |            -------------- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 144 |     pub line: usize,
[INFO] [stderr]     |         ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `MapInitializer` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: field `line` is never read
[INFO] [stderr]    --> src/parser.rs:214:9
[INFO] [stderr]     |
[INFO] [stderr] 211 | pub struct ConstStatement {
[INFO] [stderr]     |            -------------- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 214 |     pub line: usize,
[INFO] [stderr]     |         ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `ConstStatement` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: `nail` (lib) generated 3 warnings
[INFO] [stderr] warning: `nail` (lib test) generated 3 warnings (3 duplicates)
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/release/deps/nail-f5bcd78c6fa9750f)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/release/deps/nailc-581f2142cbac4cd2)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests nail
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1115715c3e415636d4d3ff74b6e58ebfef38f525c3b50530f1c9b564fcb3d11c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1115715c3e415636d4d3ff74b6e58ebfef38f525c3b50530f1c9b564fcb3d11c", kill_on_drop: false }`
[INFO] [stdout] 1115715c3e415636d4d3ff74b6e58ebfef38f525c3b50530f1c9b564fcb3d11c