[INFO] cloning repository https://github.com/xuorig/jeprof-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xuorig/jeprof-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxuorig%2Fjeprof-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxuorig%2Fjeprof-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7649ef4bee82bf01b4d3618ca1745765e9f35b5c
[INFO] checking xuorig/jeprof-rs against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxuorig%2Fjeprof-rs" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xuorig/jeprof-rs 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 git repo https://github.com/xuorig/jeprof-rs
[INFO] finished tweaking git repo https://github.com/xuorig/jeprof-rs
[INFO] tweaked toml for git repo https://github.com/xuorig/jeprof-rs written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/xuorig/jeprof-rs 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] 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] 4df8c2e726df71fc20b33ce499c2518ce4bc4e52a66c3517731bef7cb985a19b
[INFO] running `Command { std: "docker" "start" "-a" "4df8c2e726df71fc20b33ce499c2518ce4bc4e52a66c3517731bef7cb985a19b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4df8c2e726df71fc20b33ce499c2518ce4bc4e52a66c3517731bef7cb985a19b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4df8c2e726df71fc20b33ce499c2518ce4bc4e52a66c3517731bef7cb985a19b", kill_on_drop: false }`
[INFO] [stdout] 4df8c2e726df71fc20b33ce499c2518ce4bc4e52a66c3517731bef7cb985a19b
[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] 3f0d5f33bd7efb9f2b3c4e1b1f7de23e5d9b652575d3a8465820710486a867cf
[INFO] running `Command { std: "docker" "start" "-a" "3f0d5f33bd7efb9f2b3c4e1b1f7de23e5d9b652575d3a8465820710486a867cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling cpp_demangle v0.4.3
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]     Checking fallible-iterator v0.3.0
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking twox-hash v1.6.3
[INFO] [stderr]     Checking memmap2 v0.5.10
[INFO] [stderr]     Checking gimli v0.28.1
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]     Checking ruzstd v0.5.0
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]     Checking addr2line v0.21.0
[INFO] [stderr]     Checking jeprof-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `first` and `last` are never read
[INFO] [stdout]   --> src/lib.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub struct MappedLibrary<'a> {
[INFO] [stdout]    |            ------------- fields in this struct
[INFO] [stdout] 53 |     first: i64,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 54 |     last: i64,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MappedLibrary` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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 9.23s
[INFO] running `Command { std: "docker" "inspect" "3f0d5f33bd7efb9f2b3c4e1b1f7de23e5d9b652575d3a8465820710486a867cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f0d5f33bd7efb9f2b3c4e1b1f7de23e5d9b652575d3a8465820710486a867cf", kill_on_drop: false }`
[INFO] [stdout] 3f0d5f33bd7efb9f2b3c4e1b1f7de23e5d9b652575d3a8465820710486a867cf
[INFO] checking xuorig/jeprof-rs against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxuorig%2Fjeprof-rs" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xuorig/jeprof-rs 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 git repo https://github.com/xuorig/jeprof-rs
[INFO] finished tweaking git repo https://github.com/xuorig/jeprof-rs
[INFO] tweaked toml for git repo https://github.com/xuorig/jeprof-rs written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/xuorig/jeprof-rs 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 1e3e37f1ac653319acc21eb13fd6751b248a270624e74427d28426e7665a640b
[INFO] running `Command { std: "docker" "start" "-a" "1e3e37f1ac653319acc21eb13fd6751b248a270624e74427d28426e7665a640b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e3e37f1ac653319acc21eb13fd6751b248a270624e74427d28426e7665a640b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e3e37f1ac653319acc21eb13fd6751b248a270624e74427d28426e7665a640b", kill_on_drop: false }`
[INFO] [stdout] 1e3e37f1ac653319acc21eb13fd6751b248a270624e74427d28426e7665a640b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 25e259966f9689c8f7a02b3117101f97b6cf129b190ab7c7660d7c75e2036a07
[INFO] running `Command { std: "docker" "start" "-a" "25e259966f9689c8f7a02b3117101f97b6cf129b190ab7c7660d7c75e2036a07", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling cpp_demangle v0.4.3
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]     Checking fallible-iterator v0.3.0
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking twox-hash v1.6.3
[INFO] [stderr]     Checking memmap2 v0.5.10
[INFO] [stderr]     Checking gimli v0.28.1
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]     Checking ruzstd v0.5.0
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]     Checking addr2line v0.21.0
[INFO] [stderr]     Checking jeprof-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `first` and `last` are never read
[INFO] [stdout]   --> src/lib.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub struct MappedLibrary<'a> {
[INFO] [stdout]    |            ------------- fields in this struct
[INFO] [stdout] 53 |     first: i64,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 54 |     last: i64,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MappedLibrary` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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 10.10s
[INFO] running `Command { std: "docker" "inspect" "25e259966f9689c8f7a02b3117101f97b6cf129b190ab7c7660d7c75e2036a07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25e259966f9689c8f7a02b3117101f97b6cf129b190ab7c7660d7c75e2036a07", kill_on_drop: false }`
[INFO] [stdout] 25e259966f9689c8f7a02b3117101f97b6cf129b190ab7c7660d7c75e2036a07