[INFO] fetching crate atelier_json 0.2.7...
[INFO] checking atelier_json-0.2.7 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate atelier_json 0.2.7 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate atelier_json 0.2.7 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 atelier_json 0.2.7
[INFO] finished tweaking crates.io crate atelier_json 0.2.7
[INFO] tweaked toml for crates.io crate atelier_json 0.2.7 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate atelier_json 0.2.7 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded output_vt100 v0.1.2
[INFO] [stderr]   Downloaded diff v0.1.12
[INFO] [stderr]   Downloaded itoa v0.4.7
[INFO] [stderr]   Downloaded ctor v0.1.20
[INFO] [stderr]   Downloaded atelier_test v0.1.4
[INFO] [stderr]   Downloaded rustc-demangle v0.1.20
[INFO] [stderr]   Downloaded assert-json-diff v2.0.1
[INFO] [stderr]   Downloaded addr2line v0.15.2
[INFO] [stderr]   Downloaded cc v1.0.69
[INFO] [stderr]   Downloaded memchr v2.4.0
[INFO] [stderr]   Downloaded object v0.25.3
[INFO] [stderr]   Downloaded unicode-segmentation v1.8.0
[INFO] [stderr]   Downloaded libc v0.2.98
[INFO] [stderr]   Downloaded gimli v0.24.0
[INFO] [stderr]   Downloaded atelier_core v0.2.22
[INFO] [stderr]   Downloaded syn v1.0.73
[INFO] [stderr]   Downloaded serde v1.0.126
[INFO] [stderr]   Downloaded serde_json v1.0.64
[INFO] [stderr]   Downloaded backtrace v0.3.60
[INFO] [stderr]   Downloaded proc-macro2 v1.0.27
[INFO] [stderr]   Downloaded paste v1.0.5
[INFO] [stderr]   Downloaded quote v1.0.9
[INFO] [stderr]   Downloaded pretty_assertions v0.7.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 6a1c7c13f3a3a2bad55e7516916f72d9dc83081ba343da56d2949f0a68650fa1
[INFO] running `Command { std: "docker" "start" "-a" "6a1c7c13f3a3a2bad55e7516916f72d9dc83081ba343da56d2949f0a68650fa1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a1c7c13f3a3a2bad55e7516916f72d9dc83081ba343da56d2949f0a68650fa1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a1c7c13f3a3a2bad55e7516916f72d9dc83081ba343da56d2949f0a68650fa1", kill_on_drop: false }`
[INFO] [stdout] 6a1c7c13f3a3a2bad55e7516916f72d9dc83081ba343da56d2949f0a68650fa1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] e11e1908c749ea245632e626b16cb2aa9e58bc953b580a6b4e6804cf24e83efa
[INFO] running `Command { std: "docker" "start" "-a" "e11e1908c749ea245632e626b16cb2aa9e58bc953b580a6b4e6804cf24e83efa", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]     Checking gimli v0.24.0
[INFO] [stderr]     Checking rustc-demangle v0.1.20
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking unicode-segmentation v1.8.0
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling paste v1.0.5
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking diff v0.1.12
[INFO] [stderr]     Checking pretty_assertions v0.7.2
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]     Checking heck v0.3.3
[INFO] [stderr]     Checking object v0.25.3
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling backtrace v0.3.60
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking addr2line v0.15.2
[INFO] [stderr]     Checking atelier_core v0.2.22
[INFO] [stderr]     Checking assert-json-diff v2.0.1
[INFO] [stderr]     Checking atelier_test v0.1.4
[INFO] [stderr]     Checking atelier_json v0.2.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `ADD_MODEL_SMITHY_VERSION` is imported redundantly
[INFO] [stdout]  --> src/reader.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::syntax::ADD_MODEL_SMITHY_VERSION;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 2 | use crate::syntax::*;
[INFO] [stdout]   |     ---------------- the item `ADD_MODEL_SMITHY_VERSION` is already imported 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: the item `ADD_MODEL_SMITHY_VERSION` is imported redundantly
[INFO] [stdout]  --> src/reader.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::syntax::ADD_MODEL_SMITHY_VERSION;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 2 | use crate::syntax::*;
[INFO] [stdout]   |     ---------------- the item `ADD_MODEL_SMITHY_VERSION` is already imported 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.57s
[INFO] running `Command { std: "docker" "inspect" "e11e1908c749ea245632e626b16cb2aa9e58bc953b580a6b4e6804cf24e83efa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e11e1908c749ea245632e626b16cb2aa9e58bc953b580a6b4e6804cf24e83efa", kill_on_drop: false }`
[INFO] [stdout] e11e1908c749ea245632e626b16cb2aa9e58bc953b580a6b4e6804cf24e83efa