[INFO] cloning repository https://github.com/colbyn/SubSystems
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/colbyn/SubSystems" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcolbyn%2FSubSystems", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcolbyn%2FSubSystems'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a897821f091f82cec486e8b1362306a0ec3d8fa1
[INFO] checking colbyn/SubSystems against try#024378d9203a4009ed73d6db2681b88a8d74ce7a for pr-112160
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcolbyn%2FSubSystems" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/colbyn/SubSystems on toolchain 024378d9203a4009ed73d6db2681b88a8d74ce7a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/colbyn/SubSystems
[INFO] finished tweaking git repo https://github.com/colbyn/SubSystems
[INFO] tweaked toml for git repo https://github.com/colbyn/SubSystems written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/colbyn/SubSystems 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" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4da1f38d980dde7092664bff198a0632dc5905528ceb68c265a04306f368bc60
[INFO] running `Command { std: "docker" "start" "-a" "4da1f38d980dde7092664bff198a0632dc5905528ceb68c265a04306f368bc60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4da1f38d980dde7092664bff198a0632dc5905528ceb68c265a04306f368bc60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4da1f38d980dde7092664bff198a0632dc5905528ceb68c265a04306f368bc60", kill_on_drop: false }`
[INFO] [stdout] 4da1f38d980dde7092664bff198a0632dc5905528ceb68c265a04306f368bc60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] faf15225a95468181f21cc7354efdf6414bbc242740b961a0b55d1f29f968885
[INFO] running `Command { std: "docker" "start" "-a" "faf15225a95468181f21cc7354efdf6414bbc242740b961a0b55d1f29f968885", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling syn v1.0.71
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.73
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-bigint v0.3.2
[INFO] [stderr]    Compiling bumpalo v3.6.1
[INFO] [stderr]    Compiling radium v0.5.3
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]    Compiling nom v6.1.2
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]     Checking funty v1.1.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.73
[INFO] [stderr]     Checking wyz v0.2.0
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling num-bigint v0.4.0
[INFO] [stderr]     Checking bitvec v0.19.5
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]     Checking futures-core v0.3.14
[INFO] [stderr]     Checking futures-sink v0.3.14
[INFO] [stderr]     Checking futures-channel v0.3.14
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]     Checking futures-io v0.3.14
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]     Checking futures-task v0.3.14
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]     Checking slab v0.4.3
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking num v0.3.1
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking compiler v0.1.0 (/opt/rustwide/workdir/compiler)
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.73
[INFO] [stdout] error: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> compiler/src/ast/expr.rs:328:24
[INFO] [stdout]     |
[INFO] [stdout] 328 |               let xs = xs
[INFO] [stdout]     |  ________________________^
[INFO] [stdout] 329 | |                 .clone()
[INFO] [stdout]     | |________________________^ unnecessary method call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `[expr::Expr]` does not implement `Clone`, so calling `clone` on `&[expr::Expr]` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[deny(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> compiler/src/ast/expr.rs:333:24
[INFO] [stdout]     |
[INFO] [stdout] 333 |               let ys = ys
[INFO] [stdout]     |  ________________________^
[INFO] [stdout] 334 | |                 .clone()
[INFO] [stdout]     | |________________________^ unnecessary method call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `[expr::Expr]` does not implement `Clone`, so calling `clone` on `&[expr::Expr]` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `compiler` (lib test) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> compiler/src/ast/expr.rs:328:24
[INFO] [stdout]     |
[INFO] [stdout] 328 |               let xs = xs
[INFO] [stdout]     |  ________________________^
[INFO] [stdout] 329 | |                 .clone()
[INFO] [stdout]     | |________________________^ unnecessary method call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `[expr::Expr]` does not implement `Clone`, so calling `clone` on `&[expr::Expr]` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[deny(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> compiler/src/ast/expr.rs:333:24
[INFO] [stdout]     |
[INFO] [stdout] 333 |               let ys = ys
[INFO] [stdout]     |  ________________________^
[INFO] [stdout] 334 | |                 .clone()
[INFO] [stdout]     | |________________________^ unnecessary method call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `[expr::Expr]` does not implement `Clone`, so calling `clone` on `&[expr::Expr]` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `compiler` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "faf15225a95468181f21cc7354efdf6414bbc242740b961a0b55d1f29f968885", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "faf15225a95468181f21cc7354efdf6414bbc242740b961a0b55d1f29f968885", kill_on_drop: false }`
[INFO] [stdout] faf15225a95468181f21cc7354efdf6414bbc242740b961a0b55d1f29f968885