[INFO] fetching crate barfs 0.1.2...
[INFO] checking barfs-0.1.2 against master#4d1bd0db7f489b22c6d8aa2385937a95412c015b for pr-114682
[INFO] extracting crate barfs 0.1.2 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate barfs 0.1.2 on toolchain 4d1bd0db7f489b22c6d8aa2385937a95412c015b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate barfs 0.1.2
[INFO] finished tweaking crates.io crate barfs 0.1.2
[INFO] tweaked toml for crates.io crate barfs 0.1.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate barfs 0.1.2 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" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded region v2.2.0
[INFO] [stderr]   Downloaded slice-group-by v0.3.0
[INFO] [stderr]   Downloaded mach v0.3.2
[INFO] [stderr]   Downloaded target-lexicon v0.12.4
[INFO] [stderr]   Downloaded cranelift-frontend v0.89.1
[INFO] [stderr]   Downloaded anyhow v1.0.66
[INFO] [stderr]   Downloaded cranelift-codegen-meta v0.89.1
[INFO] [stderr]   Downloaded regalloc2 v0.4.2
[INFO] [stderr]   Downloaded cranelift-module v0.89.1
[INFO] [stderr]   Downloaded cranelift-native v0.89.1
[INFO] [stderr]   Downloaded cranelift-codegen-shared v0.89.1
[INFO] [stderr]   Downloaded cranelift v0.89.1
[INFO] [stderr]   Downloaded cranelift-jit v0.89.1
[INFO] [stderr]   Downloaded cranelift-bforest v0.89.1
[INFO] [stderr]   Downloaded cranelift-isle v0.89.1
[INFO] [stderr]   Downloaded cranelift-entity v0.89.1
[INFO] [stderr]   Downloaded cranelift-codegen v0.89.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc145dcc109567c378fd302e9060f19c8a9f66263c5104b6680f627bcbf23bbe
[INFO] running `Command { std: "docker" "start" "-a" "cc145dcc109567c378fd302e9060f19c8a9f66263c5104b6680f627bcbf23bbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc145dcc109567c378fd302e9060f19c8a9f66263c5104b6680f627bcbf23bbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc145dcc109567c378fd302e9060f19c8a9f66263c5104b6680f627bcbf23bbe", kill_on_drop: false }`
[INFO] [stdout] cc145dcc109567c378fd302e9060f19c8a9f66263c5104b6680f627bcbf23bbe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f17ebdb519e976b15e8ea5758faf63fe950905e5ffbc3372213337f33d136d3
[INFO] running `Command { std: "docker" "start" "-a" "6f17ebdb519e976b15e8ea5758faf63fe950905e5ffbc3372213337f33d136d3", kill_on_drop: false }`
[INFO] [stderr]    Compiling cranelift-isle v0.89.1
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.89.1
[INFO] [stderr]    Compiling target-lexicon v0.12.4
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]     Checking slice-group-by v0.3.0
[INFO] [stderr]     Checking cranelift-entity v0.89.1
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]     Checking arrayvec v0.7.2
[INFO] [stderr]     Checking bumpalo v3.11.1
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]    Compiling anyhow v1.0.66
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.89.1
[INFO] [stderr]     Checking cranelift-bforest v0.89.1
[INFO] [stderr]     Checking regalloc2 v0.4.2
[INFO] [stderr]     Checking gimli v0.26.2
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking region v2.2.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling cranelift-codegen v0.89.1
[INFO] [stderr]     Checking cranelift-module v0.89.1
[INFO] [stderr]     Checking cranelift-frontend v0.89.1
[INFO] [stderr]     Checking cranelift-native v0.89.1
[INFO] [stderr]     Checking cranelift-jit v0.89.1
[INFO] [stderr]     Checking cranelift v0.89.1
[INFO] [stderr]     Checking barfs v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/cfg.rs:138:7
[INFO] [stdout]     |
[INFO] [stdout] 138 |         let mut prevop = &mut cfg[*previnst as usize];
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/cfg.rs:138:7
[INFO] [stdout]     |
[INFO] [stdout] 138 |         let mut prevop = &mut cfg[*previnst as usize];
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` 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 [unoptimized + debuginfo] target(s) in 8.60s
[INFO] running `Command { std: "docker" "inspect" "6f17ebdb519e976b15e8ea5758faf63fe950905e5ffbc3372213337f33d136d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f17ebdb519e976b15e8ea5758faf63fe950905e5ffbc3372213337f33d136d3", kill_on_drop: false }`
[INFO] [stdout] 6f17ebdb519e976b15e8ea5758faf63fe950905e5ffbc3372213337f33d136d3
[INFO] checking barfs-0.1.2 against try#785364c7e5e0804473a3fddfb579798ea14e3493 for pr-114682
[INFO] extracting crate barfs 0.1.2 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate barfs 0.1.2 on toolchain 785364c7e5e0804473a3fddfb579798ea14e3493
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+785364c7e5e0804473a3fddfb579798ea14e3493" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate barfs 0.1.2
[INFO] finished tweaking crates.io crate barfs 0.1.2
[INFO] tweaked toml for crates.io crate barfs 0.1.2 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate barfs 0.1.2 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" "+785364c7e5e0804473a3fddfb579798ea14e3493" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+785364c7e5e0804473a3fddfb579798ea14e3493" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1ec5e647ad9f31a2090b6361d76b847768268be71b955dbc95342185a1fff40f
[INFO] running `Command { std: "docker" "start" "-a" "1ec5e647ad9f31a2090b6361d76b847768268be71b955dbc95342185a1fff40f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ec5e647ad9f31a2090b6361d76b847768268be71b955dbc95342185a1fff40f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ec5e647ad9f31a2090b6361d76b847768268be71b955dbc95342185a1fff40f", kill_on_drop: false }`
[INFO] [stdout] 1ec5e647ad9f31a2090b6361d76b847768268be71b955dbc95342185a1fff40f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+785364c7e5e0804473a3fddfb579798ea14e3493" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8e42991f1cbf46b5a12fe1c89615dfc713b44c61adb3c142852d071915969aaf
[INFO] running `Command { std: "docker" "start" "-a" "8e42991f1cbf46b5a12fe1c89615dfc713b44c61adb3c142852d071915969aaf", kill_on_drop: false }`
[INFO] [stderr]    Compiling cranelift-isle v0.89.1
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.89.1
[INFO] [stderr]    Compiling target-lexicon v0.12.4
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]     Checking slice-group-by v0.3.0
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]     Checking cranelift-entity v0.89.1
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]     Checking arrayvec v0.7.2
[INFO] [stderr]     Checking bumpalo v3.11.1
[INFO] [stderr]    Compiling anyhow v1.0.66
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.89.1
[INFO] [stderr]     Checking cranelift-bforest v0.89.1
[INFO] [stderr]     Checking regalloc2 v0.4.2
[INFO] [stderr]     Checking gimli v0.26.2
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking region v2.2.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling cranelift-codegen v0.89.1
[INFO] [stderr]     Checking cranelift-frontend v0.89.1
[INFO] [stderr]     Checking cranelift-native v0.89.1
[INFO] [stderr]     Checking cranelift-module v0.89.1
[INFO] [stderr]     Checking cranelift-jit v0.89.1
[INFO] [stderr]     Checking cranelift v0.89.1
[INFO] [stderr]     Checking barfs v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/cfg.rs:138:7
[INFO] [stdout]     |
[INFO] [stdout] 138 |         let mut prevop = &mut cfg[*previnst as usize];
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/cfg.rs:138:7
[INFO] [stdout]     |
[INFO] [stdout] 138 |         let mut prevop = &mut cfg[*previnst as usize];
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` 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 [unoptimized + debuginfo] target(s) in 9.57s
[INFO] running `Command { std: "docker" "inspect" "8e42991f1cbf46b5a12fe1c89615dfc713b44c61adb3c142852d071915969aaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e42991f1cbf46b5a12fe1c89615dfc713b44c61adb3c142852d071915969aaf", kill_on_drop: false }`
[INFO] [stdout] 8e42991f1cbf46b5a12fe1c89615dfc713b44c61adb3c142852d071915969aaf
