[INFO] fetching crate swc_fast_graph 0.21.10...
[INFO] checking swc_fast_graph-0.21.10 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate swc_fast_graph 0.21.10 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate swc_fast_graph 0.21.10 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 swc_fast_graph 0.21.10
[INFO] finished tweaking crates.io crate swc_fast_graph 0.21.10
[INFO] tweaked toml for crates.io crate swc_fast_graph 0.21.10 written to /workspace/builds/worker-1-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]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 59 packages
[INFO] [stderr]       Adding fixedbitset v0.4.2 (latest: v0.5.6)
[INFO] [stderr]       Adding hashbrown v0.12.3 (latest: v0.14.3)
[INFO] [stderr]       Adding indexmap v1.9.3 (latest: v2.2.6)
[INFO] [stderr]       Adding siphasher v0.3.11 (latest: v1.0.1)
[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded swc_atoms v0.6.6
[INFO] [stderr]   Downloaded swc_common v0.33.22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 93db424d1db54a253f7d53902128befcaf6c7d253ed0d54e9e819a113eaf9519
[INFO] running `Command { std: "docker" "start" "-a" "93db424d1db54a253f7d53902128befcaf6c7d253ed0d54e9e819a113eaf9519", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93db424d1db54a253f7d53902128befcaf6c7d253ed0d54e9e819a113eaf9519", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93db424d1db54a253f7d53902128befcaf6c7d253ed0d54e9e819a113eaf9519", kill_on_drop: false }`
[INFO] [stdout] 93db424d1db54a253f7d53902128befcaf6c7d253ed0d54e9e819a113eaf9519
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 9df7795a9db1667cea7faec1533eceef88a927ef1a831cf4cb8c3b65f2934c89
[INFO] running `Command { std: "docker" "start" "-a" "9df7795a9db1667cea7faec1533eceef88a927ef1a831cf4cb8c3b65f2934c89", kill_on_drop: false }`
[INFO] [stderr]     Checking siphasher v0.3.11
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking new_debug_unreachable v1.0.6
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking scoped-tls v1.0.1
[INFO] [stderr]     Checking unicode-normalization v0.1.23
[INFO] [stderr]     Checking fixedbitset v0.4.2
[INFO] [stderr]    Compiling swc_macros_common v0.3.9
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]    Compiling swc_eq_ignore_macros v0.1.3
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking better_scoped_tls v0.1.1
[INFO] [stderr]     Checking petgraph v0.6.4
[INFO] [stderr]     Checking phf_shared v0.11.2
[INFO] [stderr]     Checking num-bigint v0.4.4
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]     Checking phf v0.11.2
[INFO] [stderr]    Compiling swc_visit_macros v0.5.11
[INFO] [stderr]    Compiling ast_node v0.9.6
[INFO] [stderr]    Compiling from_variant v0.1.7
[INFO] [stderr]     Checking url v2.5.0
[INFO] [stderr]     Checking triomphe v0.1.11
[INFO] [stderr]     Checking hstr v0.2.8
[INFO] [stderr]     Checking swc_atoms v0.6.6
[INFO] [stderr]     Checking swc_visit v0.5.11
[INFO] [stderr]     Checking swc_common v0.33.22
[INFO] [stderr]     Checking swc_fast_graph v0.21.10 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `DoubleEndedIterator` is imported redundantly
[INFO] [stdout]   --> src/digraph.rs:10:20
[INFO] [stdout]    |
[INFO] [stdout] 10 |     iter::{Cloned, DoubleEndedIterator, FromIterator},
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `DoubleEndedIterator` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]   --> src/digraph.rs:10:41
[INFO] [stdout]    |
[INFO] [stdout] 10 |     iter::{Cloned, DoubleEndedIterator, FromIterator},
[INFO] [stdout]    |                                         ^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FromIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `DoubleEndedIterator` is imported redundantly
[INFO] [stdout]   --> src/digraph.rs:10:20
[INFO] [stdout]    |
[INFO] [stdout] 10 |     iter::{Cloned, DoubleEndedIterator, FromIterator},
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `DoubleEndedIterator` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]   --> src/digraph.rs:10:41
[INFO] [stdout]    |
[INFO] [stdout] 10 |     iter::{Cloned, DoubleEndedIterator, FromIterator},
[INFO] [stdout]    |                                         ^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FromIterator` is already defined here
[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]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.42s
[INFO] running `Command { std: "docker" "inspect" "9df7795a9db1667cea7faec1533eceef88a927ef1a831cf4cb8c3b65f2934c89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9df7795a9db1667cea7faec1533eceef88a927ef1a831cf4cb8c3b65f2934c89", kill_on_drop: false }`
[INFO] [stdout] 9df7795a9db1667cea7faec1533eceef88a927ef1a831cf4cb8c3b65f2934c89