[INFO] cloning repository https://github.com/theidiotmachine/WA1
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/theidiotmachine/WA1" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftheidiotmachine%2FWA1", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftheidiotmachine%2FWA1'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8f93c8ff5268eaf13da4a53b04c9819ba563c692
[INFO] checking theidiotmachine/WA1 against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftheidiotmachine%2FWA1" "/workspace/builds/worker-51/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-51/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/theidiotmachine/WA1 on toolchain 39e1293fce4b650061e85dda88aa428f726a8444
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/theidiotmachine/WA1
[INFO] finished tweaking git repo https://github.com/theidiotmachine/WA1
[INFO] tweaked toml for git repo https://github.com/theidiotmachine/WA1 written to /workspace/builds/worker-51/source/Cargo.toml
[INFO] crate git repo https://github.com/theidiotmachine/WA1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "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-51/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c4e2751d4602fc0813b2349299236a3917cd9a29c59bce39696fd7d8093b15b5
[INFO] running `Command { std: "docker" "start" "-a" "c4e2751d4602fc0813b2349299236a3917cd9a29c59bce39696fd7d8093b15b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4e2751d4602fc0813b2349299236a3917cd9a29c59bce39696fd7d8093b15b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4e2751d4602fc0813b2349299236a3917cd9a29c59bce39696fd7d8093b15b5", kill_on_drop: false }`
[INFO] [stdout] c4e2751d4602fc0813b2349299236a3917cd9a29c59bce39696fd7d8093b15b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 43484a85daa163789f9e0650248fec064efd730a25c7cd1fb7830e1a6927c26f
[INFO] running `Command { std: "docker" "start" "-a" "43484a85daa163789f9e0650248fec064efd730a25c7cd1fb7830e1a6927c26f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.50.0
[INFO] [stderr]    Compiling target-lexicon v0.9.0
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]     Checking smallvec v1.0.0
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]    Compiling rayon-core v1.6.1
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]     Checking termcolor v1.0.5
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]    Compiling anyhow v1.0.25
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]    Compiling wasmtime-environ v0.8.0
[INFO] [stderr]     Checking wasmparser v0.39.3
[INFO] [stderr]     Checking more-asserts v0.2.1
[INFO] [stderr]     Checking base64 v0.11.0
[INFO] [stderr]     Checking spin v0.5.2
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[INFO] [stderr]     Checking rustc-demangle v0.1.16
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[INFO] [stderr]     Checking fallible-iterator v0.2.0
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[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]     Checking vec_map v0.8.1
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[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking num_cpus v1.11.1
[INFO] [stderr]     Checking errno v0.2.4
[INFO] [stderr]     Checking region v2.1.2
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking directories v2.0.2
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling jobserver v0.1.17
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.0
[INFO] [stderr]    Compiling indexmap v1.3.0
[INFO] [stderr]    Compiling cc v1.0.47
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking sha2 v0.8.0
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking crossbeam-queue v0.2.0
[INFO] [stderr]     Checking gimli v0.19.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.2
[INFO] [stderr]    Compiling zstd-sys v1.4.15+zstd.1.4.4
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling raw-cpuid v7.0.3
[INFO] [stderr]    Compiling wasmtime-runtime v0.8.0
[INFO] [stderr]     Checking rayon v1.2.1
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking file-per-thread-logger v0.1.2
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling thiserror-impl v1.0.9
[INFO] [stderr]    Compiling scroll_derive v0.10.1
[INFO] [stderr]     Checking scroll v0.10.1
[INFO] [stderr]     Checking goblin v0.1.2
[INFO] [stderr]     Checking thiserror v1.0.9
[INFO] [stderr]     Checking wa1-types v0.1.0 (/opt/rustwide/workdir/wa1-types)
[INFO] [stderr]     Checking cranelift-entity v0.50.0
[INFO] [stderr]     Checking bincode v1.2.1
[INFO] [stderr]     Checking toml v0.5.5
[INFO] [stderr]     Checking string-interner v0.7.1
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]     Checking faerie v0.13.0
[INFO] [stderr]     Checking cranelift-bforest v0.50.0
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.50.0
[INFO] [stderr]     Checking wa1-errs v0.0.1 (/opt/rustwide/workdir/wa1-errs)
[INFO] [stderr]     Checking wa1-lexer v0.0.1 (/opt/rustwide/workdir/wa1-lexer)
[INFO] [stderr]     Checking wa1-ast v0.4.0 (/opt/rustwide/workdir/wa1-ast)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> wa1-lexer/src/lib.rs:341:21
[INFO] [stdout]     |
[INFO] [stdout] 341 | /                     ::std::mem::replace(
[INFO] [stdout] 342 | |                         &mut self.before_last_open,
[INFO] [stdout] 343 | |                         ::std::mem::replace(&mut self.last_three, LookBehind::new()),
[INFO] [stdout] 344 | |                     );
[INFO] [stdout]     | |______________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> wa1-lexer/src/lib.rs:341:21
[INFO] [stdout]     |
[INFO] [stdout] 341 | /                     ::std::mem::replace(
[INFO] [stdout] 342 | |                         &mut self.before_last_open,
[INFO] [stdout] 343 | |                         ::std::mem::replace(&mut self.last_three, LookBehind::new()),
[INFO] [stdout] 344 | |                     );
[INFO] [stdout]     | |______________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking wa1-parser v0.0.1 (/opt/rustwide/workdir/wa1-parser)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> wa1-parser/src/parser/mod.rs:173:17
[INFO] [stdout]     |
[INFO] [stdout] 173 |                 replace(&mut self.look_ahead, look_ahead);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> wa1-parser/src/parser/mod.rs:173:17
[INFO] [stdout]     |
[INFO] [stdout] 173 |                 replace(&mut self.look_ahead, look_ahead);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking wa1-generator v0.0.1 (/opt/rustwide/workdir/wa1-generator)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SymTabEvent`
[INFO] [stdout]   --> wa1-generator/src/wasm/wasm_object_file.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     SymTabEvent = 4,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SymTabTable`
[INFO] [stdout]   --> wa1-generator/src/wasm/wasm_object_file.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     SymTabTable = 5,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SymTabEvent`
[INFO] [stdout]   --> wa1-generator/src/wasm/wasm_object_file.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     SymTabEvent = 4,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SymTabTable`
[INFO] [stdout]   --> wa1-generator/src/wasm/wasm_object_file.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     SymTabTable = 5,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking wa1 v0.1.0 (/opt/rustwide/workdir/wa1)
[INFO] [stderr]     Checking zstd-safe v2.0.3+zstd.1.4.4
[INFO] [stderr]     Checking zstd v0.5.1+zstd.1.4.4
[INFO] [stderr]    Compiling cranelift-codegen v0.50.0
[INFO] [stderr]     Checking cranelift-frontend v0.50.0
[INFO] [stderr]     Checking cranelift-native v0.50.0
[INFO] [stderr]     Checking cranelift-wasm v0.50.0
[INFO] [stderr]     Checking wasmtime-debug v0.8.0
[INFO] [stderr]     Checking wasmtime-jit v0.8.0
[INFO] [stderr]     Checking wasmtime v0.8.0
[INFO] [stderr]     Checking test-runner v0.1.0 (/opt/rustwide/workdir/test-runner)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 04s
[INFO] running `Command { std: "docker" "inspect" "43484a85daa163789f9e0650248fec064efd730a25c7cd1fb7830e1a6927c26f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43484a85daa163789f9e0650248fec064efd730a25c7cd1fb7830e1a6927c26f", kill_on_drop: false }`
[INFO] [stdout] 43484a85daa163789f9e0650248fec064efd730a25c7cd1fb7830e1a6927c26f