[INFO] cloning repository https://github.com/iwillspeak/ullage
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/iwillspeak/ullage" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiwillspeak%2Fullage", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiwillspeak%2Fullage'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c0330d9cbb5293a7da58dff1154575bad9f33fc2
[INFO] checking iwillspeak/ullage against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiwillspeak%2Fullage" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/iwillspeak/ullage 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/iwillspeak/ullage
[INFO] finished tweaking git repo https://github.com/iwillspeak/ullage
[INFO] tweaked toml for git repo https://github.com/iwillspeak/ullage written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/iwillspeak/ullage 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded llvm-sys v100.2.3
[INFO] [stderr]   Downloaded ucd-trie v0.1.4
[INFO] [stderr]   Downloaded llvm-sys v90.2.1
[INFO] [stderr]   Downloaded pest v2.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 06fcd74003b2e7e285edd42ffb33aa05f200533f671725e215dc232023b9fa5d
[INFO] running `Command { std: "docker" "start" "-a" "06fcd74003b2e7e285edd42ffb33aa05f200533f671725e215dc232023b9fa5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "06fcd74003b2e7e285edd42ffb33aa05f200533f671725e215dc232023b9fa5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06fcd74003b2e7e285edd42ffb33aa05f200533f671725e215dc232023b9fa5d", kill_on_drop: false }`
[INFO] [stdout] 06fcd74003b2e7e285edd42ffb33aa05f200533f671725e215dc232023b9fa5d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] c6385677c1282f4e055d02aca471e7f7a91675bb0c522c27b902e2870baaef7d
[INFO] running `Command { std: "docker" "start" "-a" "c6385677c1282f4e055d02aca471e7f7a91675bb0c522c27b902e2870baaef7d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling ucd-trie v0.1.4
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling serde_derive v1.0.139
[INFO] [stderr]    Compiling regex-syntax v0.6.27
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling serde v1.0.139
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]     Checking fastrand v1.7.0
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]     Checking hashbrown v0.12.2
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]    Compiling regex v1.6.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.32
[INFO] [stderr]    Compiling thiserror v1.0.32
[INFO] [stderr]    Compiling pest v2.3.0
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]    Compiling llvm-sys v130.0.4
[INFO] [stderr]     Checking docopt v1.1.1
[INFO] [stderr]     Checking ullage v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Default` is imported redundantly
[INFO] [stdout]  --> src/compile/linker.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::default::Default;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Default` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `core` is imported redundantly
[INFO] [stdout]   --> src/low_loader/builder.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | use super::llvm_sys::core;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 9  | use super::llvm_sys::prelude::*;
[INFO] [stdout] 10 | use super::llvm_sys::*;
[INFO] [stdout]    |     ------------------ the item `core` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]   --> src/syntax/parse.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | use std::iter::Iterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Iterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Default` is imported redundantly
[INFO] [stdout]  --> src/compile/linker.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::default::Default;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Default` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `core` is imported redundantly
[INFO] [stdout]   --> src/low_loader/builder.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | use super::llvm_sys::core;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 9  | use super::llvm_sys::prelude::*;
[INFO] [stdout] 10 | use super::llvm_sys::*;
[INFO] [stdout]    |     ------------------ the item `core` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BuiltinType` is imported redundantly
[INFO] [stdout]    --> src/sem/binder.rs:840:9
[INFO] [stdout]     |
[INFO] [stdout] 840 |     use super::super::BuiltinType;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 841 |     use super::*;
[INFO] [stdout]     |         -------- the item `BuiltinType` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TokenKind` is imported redundantly
[INFO] [stdout]    --> src/sem/binder.rs:844:84
[INFO] [stdout]     |
[INFO] [stdout] 841 |     use super::*;
[INFO] [stdout]     |         -------- the item `TokenKind` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 844 |         IdentifierExpression, Literal, LiteralExpression, PrefixExpression, Token, TokenKind,
[INFO] [stdout]     |                                                                                    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Literal` is imported redundantly
[INFO] [stdout]  --> src/syntax/parse/checkparse_tests.rs:8:26
[INFO] [stdout]   |
[INFO] [stdout] 8 | use super::super::tree::{Literal, Token, TokenKind};
[INFO] [stdout]   |                          ^^^^^^^
[INFO] [stdout] 9 | use super::super::*;
[INFO] [stdout]   |     --------------- the item `Literal` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Token` is imported redundantly
[INFO] [stdout]  --> src/syntax/parse/checkparse_tests.rs:8:35
[INFO] [stdout]   |
[INFO] [stdout] 8 | use super::super::tree::{Literal, Token, TokenKind};
[INFO] [stdout]   |                                   ^^^^^
[INFO] [stdout] 9 | use super::super::*;
[INFO] [stdout]   |     --------------- the item `Token` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TokenKind` is imported redundantly
[INFO] [stdout]  --> src/syntax/parse/checkparse_tests.rs:8:42
[INFO] [stdout]   |
[INFO] [stdout] 8 | use super::super::tree::{Literal, Token, TokenKind};
[INFO] [stdout]   |                                          ^^^^^^^^^
[INFO] [stdout] 9 | use super::super::*;
[INFO] [stdout]   |     --------------- the item `TokenKind` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]   --> src/syntax/parse.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | use std::iter::Iterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Iterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `SourceText` is imported redundantly
[INFO] [stdout]    --> src/syntax/tree.rs:183:31
[INFO] [stdout]     |
[INFO] [stdout] 182 |     use super::*;
[INFO] [stdout]     |         -------- the item `SourceText` is already imported here
[INFO] [stdout] 183 |     use crate::syntax::text::{SourceText, DUMMY_SPAN};
[INFO] [stdout]     |                               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `lhs_typ`, `rhs_typ`, and `op` are never read
[INFO] [stdout]   --> src/sem/operators.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct SemOp {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 14 |     pub lhs_typ: Typ,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 15 |     pub rhs_typ: Typ,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 16 |     pub op: InfixOp,
[INFO] [stdout]    |         ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `lhs_typ`, `rhs_typ`, and `op` are never read
[INFO] [stdout]   --> src/sem/operators.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct SemOp {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 14 |     pub lhs_typ: Typ,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 15 |     pub rhs_typ: Typ,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 16 |     pub op: InfixOp,
[INFO] [stdout]    |         ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 30.15s
[INFO] running `Command { std: "docker" "inspect" "c6385677c1282f4e055d02aca471e7f7a91675bb0c522c27b902e2870baaef7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6385677c1282f4e055d02aca471e7f7a91675bb0c522c27b902e2870baaef7d", kill_on_drop: false }`
[INFO] [stdout] c6385677c1282f4e055d02aca471e7f7a91675bb0c522c27b902e2870baaef7d