[INFO] fetching crate rustc_span 0.0.1...
[INFO] checking rustc_span-0.0.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate rustc_span 0.0.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate rustc_span 0.0.1 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 rustc_span 0.0.1
[INFO] finished tweaking crates.io crate rustc_span 0.0.1
[INFO] tweaked toml for crates.io crate rustc_span 0.0.1 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 84 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding cfg-if v0.1.10 (latest: v1.0.0)
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.0.0)
[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 linux-raw-sys v0.4.13 (latest: v0.6.4)
[INFO] [stderr]       Adding memmap2 v0.2.3 (latest: v0.9.4)
[INFO] [stderr]       Adding redox_syscall v0.4.1 (latest: v0.5.1)
[INFO] [stderr]       Adding rustc-rayon v0.3.2 (latest: v0.5.0)
[INFO] [stderr]       Adding rustc-rayon-core v0.3.2 (latest: v0.5.0)
[INFO] [stderr]       Adding windows-targets v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_aarch64_gnullvm v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_aarch64_msvc v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_gnu v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_msvc v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_gnu v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_gnullvm v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_msvc v0.48.5 (latest: v0.52.4)
[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 rustc_data_structures v0.0.1
[INFO] [stderr]   Downloaded memmap2 v0.2.3
[INFO] [stderr]   Downloaded rustc-rayon-core v0.5.0
[INFO] [stderr]   Downloaded rustc-rayon v0.5.0
[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] 022ed65335b89996947e2d37c660286c250a3e6e89e3e6ea78cb403e54239c3c
[INFO] running `Command { std: "docker" "start" "-a" "022ed65335b89996947e2d37c660286c250a3e6e89e3e6ea78cb403e54239c3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "022ed65335b89996947e2d37c660286c250a3e6e89e3e6ea78cb403e54239c3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "022ed65335b89996947e2d37c660286c250a3e6e89e3e6ea78cb403e54239c3c", kill_on_drop: false }`
[INFO] [stdout] 022ed65335b89996947e2d37c660286c250a3e6e89e3e6ea78cb403e54239c3c
[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] 6d6ff96477a4525052ccc1f4a7b4bf9722f3e6afb2c475aea58776080e534714
[INFO] running `Command { std: "docker" "start" "-a" "6d6ff96477a4525052ccc1f4a7b4bf9722f3e6afb2c475aea58776080e534714", kill_on_drop: false }`
[INFO] [stderr]    Compiling psm v0.1.21
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.12
[INFO] [stderr]    Compiling rustc-rayon-core v0.3.2
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling stacker v0.1.15
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking ena v0.14.2
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking memmap2 v0.2.3
[INFO] [stderr]     Checking jobserver v0.1.28
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking sha-1 v0.10.1
[INFO] [stderr]     Checking rustc-rayon-core v0.5.0
[INFO] [stderr]     Checking md-5 v0.10.6
[INFO] [stderr]     Checking scoped-tls v1.0.1
[INFO] [stderr]     Checking rustc-rayon v0.3.2
[INFO] [stderr]     Checking rustc-rayon v0.5.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking rustc_data_structures v0.0.1
[INFO] [stderr]     Checking rustc_span v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]   --> src/source_map.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use std::convert::TryFrom;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryFrom` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]   --> src/source_map.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use std::convert::TryFrom;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryFrom` 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 16.05s
[INFO] running `Command { std: "docker" "inspect" "6d6ff96477a4525052ccc1f4a7b4bf9722f3e6afb2c475aea58776080e534714", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d6ff96477a4525052ccc1f4a7b4bf9722f3e6afb2c475aea58776080e534714", kill_on_drop: false }`
[INFO] [stdout] 6d6ff96477a4525052ccc1f4a7b4bf9722f3e6afb2c475aea58776080e534714
[INFO] checking rustc_span-0.0.1 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate rustc_span 0.0.1 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate rustc_span 0.0.1 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rustc_span 0.0.1
[INFO] finished tweaking crates.io crate rustc_span 0.0.1
[INFO] tweaked toml for crates.io crate rustc_span 0.0.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cfcf23b729398a8c8ee7cd509fb0d2368f7b893f72a5f28a04200e47ba68676f
[INFO] running `Command { std: "docker" "start" "-a" "cfcf23b729398a8c8ee7cd509fb0d2368f7b893f72a5f28a04200e47ba68676f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cfcf23b729398a8c8ee7cd509fb0d2368f7b893f72a5f28a04200e47ba68676f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfcf23b729398a8c8ee7cd509fb0d2368f7b893f72a5f28a04200e47ba68676f", kill_on_drop: false }`
[INFO] [stdout] cfcf23b729398a8c8ee7cd509fb0d2368f7b893f72a5f28a04200e47ba68676f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a3be17dcc3d44d70520c963a1f9e8d4c45ba717569c5541c128ed1b83f8ce012
[INFO] running `Command { std: "docker" "start" "-a" "a3be17dcc3d44d70520c963a1f9e8d4c45ba717569c5541c128ed1b83f8ce012", kill_on_drop: false }`
[INFO] [stderr]    Compiling psm v0.1.21
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]    Compiling rustc-rayon-core v0.3.2
[INFO] [stderr]     Checking crossbeam-channel v0.5.12
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling stacker v0.1.15
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking ena v0.14.2
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking memmap2 v0.2.3
[INFO] [stderr]     Checking jobserver v0.1.28
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking sha-1 v0.10.1
[INFO] [stderr]     Checking md-5 v0.10.6
[INFO] [stderr]     Checking scoped-tls v1.0.1
[INFO] [stderr]     Checking rustc-rayon-core v0.5.0
[INFO] [stderr]     Checking rustc-rayon v0.3.2
[INFO] [stderr]     Checking rustc-rayon v0.5.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking rustc_data_structures v0.0.1
[INFO] [stderr]     Checking rustc_span v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]   --> src/source_map.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use std::convert::TryFrom;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryFrom` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]   --> src/source_map.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use std::convert::TryFrom;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryFrom` 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 15.50s
[INFO] running `Command { std: "docker" "inspect" "a3be17dcc3d44d70520c963a1f9e8d4c45ba717569c5541c128ed1b83f8ce012", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3be17dcc3d44d70520c963a1f9e8d4c45ba717569c5541c128ed1b83f8ce012", kill_on_drop: false }`
[INFO] [stdout] a3be17dcc3d44d70520c963a1f9e8d4c45ba717569c5541c128ed1b83f8ce012