[INFO] cloning repository https://github.com/d4hines/flamingo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/d4hines/flamingo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fd4hines%2Fflamingo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fd4hines%2Fflamingo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5a270bc57f362d2460cace6cb59a17e0fca4ba40
[INFO] checking d4hines/flamingo against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fd4hines%2Fflamingo" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/d4hines/flamingo
[INFO] finished tweaking git repo https://github.com/d4hines/flamingo
[INFO] tweaked toml for git repo https://github.com/d4hines/flamingo written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/d4hines/flamingo on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/d4hines/flamingo 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f98cf7f2b6dd6e58f44cc76ec75512ad029eb217fd4209979fcc571e081dc091
[INFO] running `Command { std: "docker" "start" "-a" "f98cf7f2b6dd6e58f44cc76ec75512ad029eb217fd4209979fcc571e081dc091", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f98cf7f2b6dd6e58f44cc76ec75512ad029eb217fd4209979fcc571e081dc091", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f98cf7f2b6dd6e58f44cc76ec75512ad029eb217fd4209979fcc571e081dc091", kill_on_drop: false }`
[INFO] [stdout] f98cf7f2b6dd6e58f44cc76ec75512ad029eb217fd4209979fcc571e081dc091
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b1120c8e4734263bf220656f3be3b54aafaa714459646b48430789ec46d00cc3
[INFO] running `Command { std: "docker" "start" "-a" "b1120c8e4734263bf220656f3be3b54aafaa714459646b48430789ec46d00cc3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling syn v1.0.19
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling string_cache_shared v0.3.0
[INFO] [stderr]    Compiling serde v1.0.110
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling bit-vec v0.6.2
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling fixedbitset v0.1.9
[INFO] [stderr]    Compiling ordermap v0.3.5
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling bit-set v0.5.2
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling petgraph v0.4.13
[INFO] [stderr]    Compiling ena v0.13.1
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling ascii-canvas v2.0.0
[INFO] [stderr]    Compiling sha2 v0.8.1
[INFO] [stderr]    Compiling diff v0.1.12
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling string_cache_codegen v0.4.4
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking codespan-reporting v0.9.3
[INFO] [stderr]    Compiling string_cache v0.7.5
[INFO] [stderr]    Compiling regex v1.3.7
[INFO] [stderr]    Compiling serde_derive v1.0.110
[INFO] [stderr]    Compiling lalrpop-util v0.18.1
[INFO] [stderr]    Compiling docopt v1.1.0
[INFO] [stderr]    Compiling lalrpop v0.18.1
[INFO] [stderr]    Compiling flamingo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `self::__parse__ALMModule::ALMModuleParser`
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/flamingo-29d52d764f4cd31b/out/parse.rs:3129:9
[INFO] [stdout]      |
[INFO] [stdout] 3129 | pub use self::__parse__ALMModule::ALMModuleParser;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/flamingo-29d52d764f4cd31b/out/parse.rs:936:16
[INFO] [stdout]     |
[INFO] [stdout] 935 |     impl ALMModuleParser {
[INFO] [stdout]     |     -------------------- associated function in this implementation
[INFO] [stdout] 936 |         pub fn new() -> ALMModuleParser {
[INFO] [stdout]     |                ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `new_builder` is never used
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/flamingo-29d52d764f4cd31b/out/parse.rs:3139:12
[INFO] [stdout]      |
[INFO] [stdout] 3139 |     pub fn new_builder() -> __lalrpop_util::lexer::MatcherBuilder {
[INFO] [stdout]      |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/flamingo-29d52d764f4cd31b/out/parse.rs:3201:5
[INFO] [stdout]      |
[INFO] [stdout] 3201 |     String::from_str(__0).unwrap()
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/flamingo-29d52d764f4cd31b/out/parse.rs:3385:5
[INFO] [stdout]      |
[INFO] [stdout] 3385 |     String::from_str(__0).unwrap()
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/flamingo-29d52d764f4cd31b/out/parse.rs:3479:17
[INFO] [stdout]      |
[INFO] [stdout] 3479 |        let s =  String::from_str(__0).unwrap();
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/flamingo-29d52d764f4cd31b/out/parse.rs:3201:5
[INFO] [stdout]      |
[INFO] [stdout] 3201 |     String::from_str(__0).unwrap()
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/flamingo-29d52d764f4cd31b/out/parse.rs:3385:5
[INFO] [stdout]      |
[INFO] [stdout] 3385 |     String::from_str(__0).unwrap()
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/flamingo-29d52d764f4cd31b/out/parse.rs:3479:17
[INFO] [stdout]      |
[INFO] [stdout] 3479 |        let s =  String::from_str(__0).unwrap();
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `flamingo` (bin "flamingo") due to 3 previous errors; 3 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `flamingo` (bin "flamingo" test) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "b1120c8e4734263bf220656f3be3b54aafaa714459646b48430789ec46d00cc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1120c8e4734263bf220656f3be3b54aafaa714459646b48430789ec46d00cc3", kill_on_drop: false }`
[INFO] [stdout] b1120c8e4734263bf220656f3be3b54aafaa714459646b48430789ec46d00cc3