[INFO] fetching crate ceres-browser 0.2.0...
[INFO] checking ceres-browser-0.2.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate ceres-browser 0.2.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate ceres-browser 0.2.0 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 crates.io crate ceres-browser 0.2.0
[INFO] finished tweaking crates.io crate ceres-browser 0.2.0
[INFO] tweaked toml for crates.io crate ceres-browser 0.2.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 94 packages
[INFO] [stderr]       Adding arrayvec v0.4.12 (latest: v0.7.4)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding bitvec v0.20.4 (latest: v1.0.1)
[INFO] [stderr]       Adding block-buffer v0.9.0 (latest: v0.10.4)
[INFO] [stderr]       Adding cfg-if v0.1.10 (latest: v1.0.0)
[INFO] [stderr]       Adding constant_time_eq v0.1.5 (latest: v0.3.0)
[INFO] [stderr]       Adding digest v0.9.0 (latest: v0.10.7)
[INFO] [stderr]       Adding funty v1.1.0 (latest: v2.0.0)
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.0.0)
[INFO] [stderr]       Adding memory_units v0.3.0 (latest: v0.4.0)
[INFO] [stderr]       Adding num-bigint v0.2.6 (latest: v0.4.4)
[INFO] [stderr]       Adding num-rational v0.2.4 (latest: v0.4.1)
[INFO] [stderr]       Adding parity-scale-codec v2.3.1 (latest: v3.6.9)
[INFO] [stderr]       Adding parity-scale-codec-derive v2.3.1 (latest: v3.6.9)
[INFO] [stderr]       Adding parity-wasm v0.41.0 (latest: v0.45.0)
[INFO] [stderr]       Adding parity-wasm v0.42.2 (latest: v0.45.0)
[INFO] [stderr]       Adding proc-macro-crate v1.3.1 (latest: v3.1.0)
[INFO] [stderr]       Adding radium v0.6.2 (latest: v1.1.0)
[INFO] [stderr]       Adding sha2 v0.9.9 (latest: v0.10.8)
[INFO] [stderr]       Adding snafu v0.6.10 (latest: v0.8.2)
[INFO] [stderr]       Adding snafu-derive v0.6.10 (latest: v0.8.2)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding toml_edit v0.19.15 (latest: v0.22.9)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] [stderr]       Adding wasmi-validation v0.4.1 (latest: v0.5.0)
[INFO] [stderr]       Adding winnow v0.5.40 (latest: v0.6.5)
[INFO] [stderr]       Adding wyz v0.2.0 (latest: v0.6.1)
[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 ceres-std v0.2.0
[INFO] [stderr]   Downloaded wee_alloc v0.4.5
[INFO] [stderr]   Downloaded ceres-sandbox v0.2.0
[INFO] [stderr]   Downloaded parity-wasm v0.41.0
[INFO] [stderr]   Downloaded ceres-executor v0.2.0
[INFO] [stderr]   Downloaded arrayvec v0.4.12
[INFO] [stderr]   Downloaded blake2-rfc v0.2.18
[INFO] [stderr]   Downloaded ceres-derive v0.2.0
[INFO] [stderr]   Downloaded num-bigint v0.2.6
[INFO] [stderr]   Downloaded parity-wasm v0.42.2
[INFO] [stderr]   Downloaded ceres-seal v0.2.0
[INFO] [stderr]   Downloaded ceres-runtime v0.2.0
[INFO] [stderr]   Downloaded memory_units v0.3.0
[INFO] [stderr]   Downloaded wasmi-validation v0.4.1
[INFO] [stderr]   Downloaded patract-wasmi v0.9.1
[INFO] [stderr]   Downloaded ceres-support v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] c6addd0e9110c13c0399dd4d7ffefffd4714f256c2dd6aef6db7e0f05478b58b
[INFO] running `Command { std: "docker" "start" "-a" "c6addd0e9110c13c0399dd4d7ffefffd4714f256c2dd6aef6db7e0f05478b58b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c6addd0e9110c13c0399dd4d7ffefffd4714f256c2dd6aef6db7e0f05478b58b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6addd0e9110c13c0399dd4d7ffefffd4714f256c2dd6aef6db7e0f05478b58b", kill_on_drop: false }`
[INFO] [stdout] c6addd0e9110c13c0399dd4d7ffefffd4714f256c2dd6aef6db7e0f05478b58b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] ac1a961138b3ce5a1f191bbfde420db75e663afc9f11da09e78f9c2f3495d44b
[INFO] running `Command { std: "docker" "start" "-a" "ac1a961138b3ce5a1f191bbfde420db75e663afc9f11da09e78f9c2f3495d44b", kill_on_drop: false }`
[INFO] [stderr]    Compiling radium v0.6.2
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]     Checking wyz v0.2.0
[INFO] [stderr]     Checking funty v1.1.0
[INFO] [stderr]     Checking parity-wasm v0.42.2
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking byte-slice-cast v1.2.2
[INFO] [stderr]    Compiling anyhow v1.0.81
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]    Compiling parity-scale-codec-derive v2.3.1
[INFO] [stderr]    Compiling impl-trait-for-tuples v0.2.2
[INFO] [stderr]     Checking parity-wasm v0.41.0
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]     Checking ceres-std v0.2.0
[INFO] [stderr]     Checking memory_units v0.3.0
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling serde_json v1.0.115
[INFO] [stderr]    Compiling ceres-derive v0.2.0
[INFO] [stderr]    Compiling wee_alloc v0.4.5
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling snafu-derive v0.6.10
[INFO] [stderr]     Checking memory_units v0.4.0
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking bitvec v0.20.4
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking sha2 v0.9.9
[INFO] [stderr]     Checking blake2-rfc v0.2.18
[INFO] [stderr]     Checking wasmi-validation v0.4.1
[INFO] [stderr]     Checking patract-wasmi v0.9.1
[INFO] [stderr]     Checking snafu v0.6.10
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.92
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.3.42
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.92
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.92
[INFO] [stderr]     Checking wasm-bindgen v0.2.92
[INFO] [stderr]     Checking js-sys v0.3.69
[INFO] [stderr]     Checking console_error_panic_hook v0.1.7
[INFO] [stderr]     Checking web-sys v0.3.69
[INFO] [stderr]     Checking wasm-bindgen-futures v0.4.42
[INFO] [stderr]     Checking wasm-bindgen-test v0.3.42
[INFO] [stderr]     Checking parity-scale-codec v2.3.1
[INFO] [stderr]     Checking ceres-support v0.2.0
[INFO] [stderr]     Checking ceres-executor v0.2.0
[INFO] [stderr]     Checking ceres-sandbox v0.2.0
[INFO] [stderr]     Checking ceres-seal v0.2.0
[INFO] [stderr]     Checking ceres-runtime v0.2.0
[INFO] [stderr]     Checking ceres-browser v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/tree.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 3 | use ceres_std::{Rc, Vec};
[INFO] [stdout]   |                     ^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/tree.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 3 | use ceres_std::{Rc, Vec};
[INFO] [stdout]   |                     ^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[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 26.09s
[INFO] running `Command { std: "docker" "inspect" "ac1a961138b3ce5a1f191bbfde420db75e663afc9f11da09e78f9c2f3495d44b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac1a961138b3ce5a1f191bbfde420db75e663afc9f11da09e78f9c2f3495d44b", kill_on_drop: false }`
[INFO] [stdout] ac1a961138b3ce5a1f191bbfde420db75e663afc9f11da09e78f9c2f3495d44b