[INFO] cloning repository https://github.com/sampersand/quest2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sampersand/quest2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsampersand%2Fquest2", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsampersand%2Fquest2'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 98708531875b480a83503e0dac1e4995a7669fc7
[INFO] checking sampersand/quest2 against master#5518eaa946291f00471af8b254b2a1715f234882 for pr-120393
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsampersand%2Fquest2" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sampersand/quest2 on toolchain 5518eaa946291f00471af8b254b2a1715f234882
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sampersand/quest2
[INFO] finished tweaking git repo https://github.com/sampersand/quest2
[INFO] tweaked toml for git repo https://github.com/sampersand/quest2 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/sampersand/quest2 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" "+5518eaa946291f00471af8b254b2a1715f234882" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dashmap v5.3.4
[INFO] [stderr]   Downloaded radix_fmt v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 84916eb56461293761380b4541ef6fb66b033871e0182d6def1ffec506d0071a
[INFO] running `Command { std: "docker" "start" "-a" "84916eb56461293761380b4541ef6fb66b033871e0182d6def1ffec506d0071a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84916eb56461293761380b4541ef6fb66b033871e0182d6def1ffec506d0071a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84916eb56461293761380b4541ef6fb66b033871e0182d6def1ffec506d0071a", kill_on_drop: false }`
[INFO] [stdout] 84916eb56461293761380b4541ef6fb66b033871e0182d6def1ffec506d0071a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+5518eaa946291f00471af8b254b2a1715f234882" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e1035dca92693091303ce8095eaf1192a060703e9daf202d054464febdd4f5c
[INFO] running `Command { std: "docker" "start" "-a" "2e1035dca92693091303ce8095eaf1192a060703e9daf202d054464febdd4f5c", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]     Checking tracing-core v0.1.26
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking radix_fmt v1.0.0
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]     Checking assert_matches v1.5.0
[INFO] [stderr]     Checking tracing-log v0.1.3
[INFO] [stderr]     Checking tracing-subscriber v0.3.11
[INFO] [stderr]     Checking quote v1.0.15
[INFO] [stderr]     Checking getrandom v0.2.5
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking hashbrown v0.12.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking dashmap v5.3.4
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]     Checking qvm-macros v0.1.0 (/opt/rustwide/workdir/macros)
[INFO] [stderr]    Compiling tracing-attributes v0.1.21
[INFO] [stderr]     Checking tracing v0.1.34
[INFO] [stderr]     Checking quest v0.2.0 (/opt/rustwide/workdir/quest)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> quest/src/value/ty/list/internal_builder.rs:43:7
[INFO] [stdout]    |
[INFO] [stdout] 43 |         let mut alloc = &mut self.inner_mut().alloc;
[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]    --> quest/src/value/ty/list.rs:128:8
[INFO] [stdout]     |
[INFO] [stdout] 128 |             let mut alloc = &mut builder.inner_mut().alloc;
[INFO] [stdout]     |                 ----^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> quest/src/value/ty/list.rs:276:7
[INFO] [stdout]     |
[INFO] [stdout] 276 |         let mut alloc = &mut self.inner_mut().alloc;
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> quest/src/value/ty/list.rs:345:8
[INFO] [stdout]     |
[INFO] [stdout] 345 |             let mut alloc = &mut self.inner_mut().alloc;
[INFO] [stdout]     |                 ----^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> quest/src/value/ty/list/internal_builder.rs:43:7
[INFO] [stdout]    |
[INFO] [stdout] 43 |         let mut alloc = &mut self.inner_mut().alloc;
[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]    --> quest/src/value/ty/list.rs:128:8
[INFO] [stdout]     |
[INFO] [stdout] 128 |             let mut alloc = &mut builder.inner_mut().alloc;
[INFO] [stdout]     |                 ----^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> quest/src/value/ty/list.rs:276:7
[INFO] [stdout]     |
[INFO] [stdout] 276 |         let mut alloc = &mut self.inner_mut().alloc;
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> quest/src/value/ty/list.rs:345:8
[INFO] [stdout]     |
[INFO] [stdout] 345 |             let mut alloc = &mut self.inner_mut().alloc;
[INFO] [stdout]     |                 ----^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> quest/src/value/ty/text/builder.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 |             let mut alloc = &mut self.inner_mut().alloc;
[INFO] [stdout]    |                 ----^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> quest/src/value/ty/text.rs:358:7
[INFO] [stdout]     |
[INFO] [stdout] 358 |         let mut alloc = unsafe { &mut builder.inner_mut().alloc };
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> quest/src/value/ty/text.rs:391:7
[INFO] [stdout]     |
[INFO] [stdout] 391 |         let mut alloc = unsafe { &mut builder.inner_mut().alloc };
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> quest/src/value/ty/text.rs:739:7
[INFO] [stdout]     |
[INFO] [stdout] 739 |         let mut alloc = &mut self.inner_mut().alloc;
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> quest/src/value/ty/text.rs:807:8
[INFO] [stdout]     |
[INFO] [stdout] 807 |             let mut alloc = &mut self.inner_mut().alloc;
[INFO] [stdout]     |                 ----^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> quest/src/value/ty/text/builder.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 |             let mut alloc = &mut self.inner_mut().alloc;
[INFO] [stdout]    |                 ----^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> quest/src/value/ty/text.rs:358:7
[INFO] [stdout]     |
[INFO] [stdout] 358 |         let mut alloc = unsafe { &mut builder.inner_mut().alloc };
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> quest/src/value/ty/text.rs:391:7
[INFO] [stdout]     |
[INFO] [stdout] 391 |         let mut alloc = unsafe { &mut builder.inner_mut().alloc };
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> quest/src/value/ty/text.rs:739:7
[INFO] [stdout]     |
[INFO] [stdout] 739 |         let mut alloc = &mut self.inner_mut().alloc;
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> quest/src/value/ty/text.rs:807:8
[INFO] [stdout]     |
[INFO] [stdout] 807 |             let mut alloc = &mut self.inner_mut().alloc;
[INFO] [stdout]     |                 ----^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.23s
[INFO] running `Command { std: "docker" "inspect" "2e1035dca92693091303ce8095eaf1192a060703e9daf202d054464febdd4f5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e1035dca92693091303ce8095eaf1192a060703e9daf202d054464febdd4f5c", kill_on_drop: false }`
[INFO] [stdout] 2e1035dca92693091303ce8095eaf1192a060703e9daf202d054464febdd4f5c
