[INFO] cloning repository https://github.com/krobelus/rate
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/krobelus/rate" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkrobelus%2Frate", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkrobelus%2Frate'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 93bf524435455ddc0b370669c17b1eb8741a026c
[INFO] checking krobelus/rate against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkrobelus%2Frate" "/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/krobelus/rate 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/krobelus/rate
[INFO] finished tweaking git repo https://github.com/krobelus/rate
[INFO] tweaked toml for git repo https://github.com/krobelus/rate written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/krobelus/rate 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]  Downloading crates ...
[INFO] [stderr]   Downloaded lz4 v1.23.2
[INFO] [stderr]   Downloaded zstd-safe v3.0.0+zstd.1.4.8
[INFO] [stderr]   Downloaded zstd v0.6.0+zstd.1.4.8
[INFO] [stderr]   Downloaded serde_derive v1.0.120
[INFO] [stderr]   Downloaded lz4-sys v1.9.2
[INFO] [stderr]   Downloaded lzma-sys v0.1.17
[INFO] [stderr]   Downloaded zstd-sys v1.4.19+zstd.1.4.8
[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] 63625bd514066fe505e2267756ee1e98ba2a45bebd386fd1760cc9c7e792b2ef
[INFO] running `Command { std: "docker" "start" "-a" "63625bd514066fe505e2267756ee1e98ba2a45bebd386fd1760cc9c7e792b2ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "63625bd514066fe505e2267756ee1e98ba2a45bebd386fd1760cc9c7e792b2ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63625bd514066fe505e2267756ee1e98ba2a45bebd386fd1760cc9c7e792b2ef", kill_on_drop: false }`
[INFO] [stdout] 63625bd514066fe505e2267756ee1e98ba2a45bebd386fd1760cc9c7e792b2ef
[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] 0cc68753ac2f2a258f744fb84f563b87a17a2a6fca633ced616525d216a00726
[INFO] running `Command { std: "docker" "start" "-a" "0cc68753ac2f2a258f744fb84f563b87a17a2a6fca633ced616525d216a00726", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling syn v1.0.59
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling zstd-safe v3.0.0+zstd.1.4.8
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling serde v1.0.120
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]    Compiling serde_derive v1.0.120
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking flate2 v1.0.19
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling zstd-sys v1.4.19+zstd.1.4.8
[INFO] [stderr]    Compiling lz4-sys v1.9.2
[INFO] [stderr]    Compiling lzma-sys v0.1.17
[INFO] [stderr]    Compiling bzip2-sys v0.1.9+1.0.8
[INFO] [stderr]     Checking xz2 v0.1.6
[INFO] [stderr]     Checking bzip2 v0.4.1
[INFO] [stderr]     Checking rate-macros v0.3.0 (/opt/rustwide/workdir/rate-macros)
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking lz4 v1.23.2
[INFO] [stderr]     Checking zstd v0.6.0+zstd.1.4.8
[INFO] [stderr]     Checking rate-common v0.3.0 (/opt/rustwide/workdir/rate-common)
[INFO] [stdout] warning: the item `atty` is imported redundantly
[INFO] [stdout]   --> rate-common/src/output.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | use atty::{self, Stream};
[INFO] [stdout]    |            ^^^^ the item `atty` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> rate-common/src/output.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | use libc::{self, signal};
[INFO] [stdout]    |            ^^^^ the item `libc` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `IntoIterator` is imported redundantly
[INFO] [stdout]  --> rate-common/src/memory/stackmapping.rs:5:23
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::{fmt::Debug, iter::IntoIterator, ops::Index, slice};
[INFO] [stdout]   |                       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `IntoIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> rate-common/src/assignment.rs:47:13
[INFO] [stdout]    |
[INFO] [stdout] 47 |             /// + 2 for Literal::TOP and one conflicting assignment
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 48 |             trail: BoundedVector::with_capacity(maxvar.array_size_for_variables() + 2),
[INFO] [stdout]    |             -------------------------------------------------------------------------- rustdoc does not generate documentation for expression fields
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `atty` is imported redundantly
[INFO] [stdout]   --> rate-common/src/output.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | use atty::{self, Stream};
[INFO] [stdout]    |            ^^^^ the item `atty` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> rate-common/src/output.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | use libc::{self, signal};
[INFO] [stdout]    |            ^^^^ the item `libc` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `IntoIterator` is imported redundantly
[INFO] [stdout]  --> rate-common/src/memory/stackmapping.rs:5:23
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::{fmt::Debug, iter::IntoIterator, ops::Index, slice};
[INFO] [stdout]   |                       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `IntoIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> rate-common/src/assignment.rs:47:13
[INFO] [stdout]    |
[INFO] [stdout] 47 |             /// + 2 for Literal::TOP and one conflicting assignment
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 48 |             trail: BoundedVector::with_capacity(maxvar.array_size_for_variables() + 2),
[INFO] [stdout]    |             -------------------------------------------------------------------------- rustdoc does not generate documentation for expression fields
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `as_error` is imported redundantly
[INFO] [stdout]   --> rate-common/src/sick.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout] 4  |       as_error,
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: rate-common/src/macros.rs:43:1
[INFO] [stdout]    |
[INFO] [stdout] 43 | / macro_rules! as_error {
[INFO] [stdout] 44 | |     ($what:expr) => {{
[INFO] [stdout] 45 | |         if $crate::output::is_a_tty() {
[INFO] [stdout] 46 | |             $crate::puts!("\x1b[31;1m");
[INFO] [stdout] ...  |
[INFO] [stdout] 52 | |     }};
[INFO] [stdout] 53 | | }
[INFO] [stdout]    | |_- the item `as_error` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `as_error` is imported redundantly
[INFO] [stdout]   --> rate-common/src/sick.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout] 4  |       as_error,
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: rate-common/src/macros.rs:43:1
[INFO] [stdout]    |
[INFO] [stdout] 43 | / macro_rules! as_error {
[INFO] [stdout] 44 | |     ($what:expr) => {{
[INFO] [stdout] 45 | |         if $crate::output::is_a_tty() {
[INFO] [stdout] 46 | |             $crate::puts!("\x1b[31;1m");
[INFO] [stdout] ...  |
[INFO] [stdout] 52 | |     }};
[INFO] [stdout] 53 | | }
[INFO] [stdout]    | |_- the item `as_error` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `puts` is imported redundantly
[INFO] [stdout]   --> rate-common/src/sick.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |       puts, requires,
[INFO] [stdout]    |       ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: rate-common/src/macros.rs:5:1
[INFO] [stdout]    |
[INFO] [stdout] 5  | / macro_rules! puts {
[INFO] [stdout] 6  | |     ($($arg:tt)*) => ({
[INFO] [stdout] 7  | |         use std::io::Write;
[INFO] [stdout] 8  | |         match write!(std::io::stdout(), $($arg)*) {
[INFO] [stdout] ...  |
[INFO] [stdout] 14 | |     })
[INFO] [stdout] 15 | | }
[INFO] [stdout]    | |_- the item `puts` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `puts` is imported redundantly
[INFO] [stdout]   --> rate-common/src/sick.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |       puts, requires,
[INFO] [stdout]    |       ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: rate-common/src/macros.rs:5:1
[INFO] [stdout]    |
[INFO] [stdout] 5  | / macro_rules! puts {
[INFO] [stdout] 6  | |     ($($arg:tt)*) => ({
[INFO] [stdout] 7  | |         use std::io::Write;
[INFO] [stdout] 8  | |         match write!(std::io::stdout(), $($arg)*) {
[INFO] [stdout] ...  |
[INFO] [stdout] 14 | |     })
[INFO] [stdout] 15 | | }
[INFO] [stdout]    | |_- the item `puts` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `requires` is imported redundantly
[INFO] [stdout]   --> rate-common/src/sick.rs:11:11
[INFO] [stdout]    |
[INFO] [stdout] 11 |       puts, requires,
[INFO] [stdout]    |             ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: rate-common/src/macros.rs:80:1
[INFO] [stdout]    |
[INFO] [stdout] 80 | / macro_rules! requires {
[INFO] [stdout] 81 | |     ($($arg:tt)*) => ({
[INFO] [stdout] 82 | |         if $crate::config::CHECK_PRECONDITIONS {
[INFO] [stdout] 83 | |             assert!($($arg)*);
[INFO] [stdout] 84 | |         }
[INFO] [stdout] 85 | |     })
[INFO] [stdout] 86 | | }
[INFO] [stdout]    | |_- the item `requires` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `requires` is imported redundantly
[INFO] [stdout]   --> rate-common/src/sick.rs:11:11
[INFO] [stdout]    |
[INFO] [stdout] 11 |       puts, requires,
[INFO] [stdout]    |             ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: rate-common/src/macros.rs:80:1
[INFO] [stdout]    |
[INFO] [stdout] 80 | / macro_rules! requires {
[INFO] [stdout] 81 | |     ($($arg:tt)*) => ({
[INFO] [stdout] 82 | |         if $crate::config::CHECK_PRECONDITIONS {
[INFO] [stdout] 83 | |             assert!($($arg)*);
[INFO] [stdout] 84 | |         }
[INFO] [stdout] 85 | |     })
[INFO] [stdout] 86 | | }
[INFO] [stdout]    | |_- the item `requires` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> rate-common/src/parser.rs:213:5
[INFO] [stdout]     |
[INFO] [stdout] 213 |     mut parser: &mut Parser,
[INFO] [stdout]     |     ----^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> rate-common/src/parser.rs:213:5
[INFO] [stdout]     |
[INFO] [stdout] 213 |     mut parser: &mut Parser,
[INFO] [stdout]     |     ----^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rate-sick-check v0.3.0 (/opt/rustwide/workdir/rate-sick-check)
[INFO] [stderr]     Checking rate-proof-utils v0.3.0 (/opt/rustwide/workdir/rate-proof-utils)
[INFO] [stderr]     Checking rate v0.3.0 (/opt/rustwide/workdir/rate)
[INFO] [stdout] warning: the item `rate_macros` is imported redundantly
[INFO] [stdout]   --> rate/rate.rs:21:19
[INFO] [stdout]    |
[INFO] [stdout] 21 | use rate_macros::{self, HeapSpace};
[INFO] [stdout]    |                   ^^^^ the item `rate_macros` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rate_macros` is imported redundantly
[INFO] [stdout]   --> rate/rate.rs:21:19
[INFO] [stdout]    |
[INFO] [stdout] 21 | use rate_macros::{self, HeapSpace};
[INFO] [stdout]    |                   ^^^^ the item `rate_macros` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 49.12s
[INFO] running `Command { std: "docker" "inspect" "0cc68753ac2f2a258f744fb84f563b87a17a2a6fca633ced616525d216a00726", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cc68753ac2f2a258f744fb84f563b87a17a2a6fca633ced616525d216a00726", kill_on_drop: false }`
[INFO] [stdout] 0cc68753ac2f2a258f744fb84f563b87a17a2a6fca633ced616525d216a00726